NIST Standard Reference Materials® 2023 Catalog NIST SP 260-176
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i

NIST SP 260-176

Standard 

Reference 

Materials® 

Catalog

January 2023

Editors: Regina Montgomery and 

Ilse Bercik, Ph.D

Office of Reference Materials

National Institute of Standards and Technology

Gaithersburg, MD 20899-2300

Steven J. Choquette, Director

U.S. Department of Commerce

Gina M. Raimondo, Secretary

National Institute of Standards and Technology

Laurie E. Locascio, NIST Director and Under Secretary of 

Commerce for Standards and Technology 

Please visit our website 

www.nist.gov/srm
www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

ii

Certain commercial entities, equipment, or materials 

may be identified in this document in order to 

describe an experimental procedure or concept 

adequately. Such identification is not intended to 

imply recommendation or endorsement by the 

National Institute of Standards and Technology, nor 

is it intended to imply that the entities, materials, or 

equipment are necessarily the best available for the 

purpose. 

National Institute of Standards and Technology 

Special Publication 260-176

Supersedes NIST SP 260-176, 2022

122 pages (January 2023)

CODEN: NSPUE2

U.S. GOVERNMENT PRINTING OFFICE

WASHINGTON: 2023
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iii

N

IST Standard Reference Materials® (SRMs) are used by industry, government, and 

academia to ensure the highest quality measurements. This catalog lists over 1200 

individual reference materials produced and sold by NIST, each with carefully 

assigned values for chemical composition and physical properties.

SRMs find use in calibrating instruments and in assuring the long-term integrity of quality 

assurance programs. They are also key mechanisms for verifying important measurement 

results and in developing new measurement methods. SRMs provide users with tools to assist 

in establishing traceability of measurement results to the International System of Units (SI). Each 

SRM comes carefully packaged with documentation containing assigned values with stated 

uncertainties, and a material safety data sheet, if applicable. 

For further information and prices, contact us at: 

Telephone: (301) 975-2200 

E-mail: srminfo@nist.gov

www.nist.gov/srm

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials 

to help customers select the best SRM for their needs. For specific values and uncertainties, the 

certificate is the only official source. 

The data given in this catalog is constantly being revised. For the most up-to-date information, 

please consult our websites at https://www.nist.gov/srm and https://shop.nist.gov/. 
www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

iv
www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

v

Chemical Composition

Ferrous Metals .................................. 1

Plain Carbon Steels 

(chip form)...........................................................2

Special Low Alloy Steels 

(chip and pin forms) ........................................2

Low Alloy Steels 

(chip form) .........................................................2

Low Alloy Steels 

(disk and rod forms).........................................3

High Alloy Steels 

(chip form) .........................................................3

High Temperature Alloys 

(chip and disk forms).......................................3

Stainless Steels 

(chip and powder form) ................................4

Stainless Steels 

(disk form)...........................................................4

Tool Steels 

(chip form)...........................................................4

Steelmaking Alloys 

(powder form)....................................................4

Specialty Steels 

(disk form)...........................................................5

Gases in Ferrous Metals 

(rod and disk forms).........................................5

Cast Steels, White Cast Irons, and Ductile 

Irons (disk and block forms)..........................5

Cast Irons 

(chip form) .........................................................5

Nonferrous Metals............................. 7

Aluminum Base Alloys 

(chip and disk forms) ......................................8

 Cobalt Base Alloys 

(chip and disk forms).......................................8

Copper Base Alloys 

(chip, granule and rod forms).......................8

Copper “Benchmark” 

(block, chip and rod forms)...........................8

Copper Base Alloys

 (block and disk forms) ..................................9

Lead-Base Alloys 

(disk and powder forms)................................9

Nickel Base Alloys 

(chip, disk and granule forms) .....................9

Tin Base Alloys 

(powder, block and disk forms).................10

Titanium Base Alloys 

(chip and disk forms) ....................................10

Zinc Base Alloys 

(block, chip and disk forms)........................10

Microanalysis................................... 11

Metals 

(rod, wire, disk and cube forms) ...............12

Synthetic Glass for Microanalysis 

(rod and microsphere forms) .....................12

Semiconductor Thin Film for 

the Composition of Thin Films...................12

High-Purity Materials ....................... 13

High Purity Metals 

(solid forms) .....................................................14

Stoichiometry 

(powder form)..................................................14

Microchemistry 

(powder form)..................................................14

Spectrometry, Single-Element 

Standard Solutions........................................14

Arsenic Species 

Standard Solutions .......................................16

Anion Chromatography 

(solution form) ................................................16

Stable Isotopic Materials 

(solid and solution forms)............................16

Light Stable Isotopic Materials 

(gas, liquid and solid forms)........................17

NIST 2023 SRM Exhibit Schedule ......... 18

Health & Industrial Hygiene ............... 19

Clinical Laboratory Materials 

(gas, liquid and solid forms) .......................20

Ethanol Solutions .............................................21

Toxic Substances in Urine 

(frozen form).....................................................21

Drugs of Abuse, Smoking Metabolites and 

Contaminates (urine) ....................................22

Biomaterials

(solid forms)......................................................22

Respirable Materials on 

Filter Media ......................................................22

Biomanufacturing, Vitamin D Metabolites 

for Clinical Laboratory Materials...............23

Serum and Plasma Materials (frozen, liquid, 

and lyophilized forms)..................................24 

Respirable 

Materials............................................................25

DNA Profiling, Nucleic Acid Materials and 

Monoclonal Antibody ..................................26

Lead in Paint, Dust, and Soil 

(powder and sheet forms) ..........................28

Inorganics....................................... 29

Metal (Inorganics) Constituents 

in Natural Matrices 

(liquid and solid forms) ................................30

Mercury in 

Activated Carbon............................................30

Environmental Matrices 

with Carbon Values........................................31

Used Auto Catalysts 

(powder form)..................................................31

Zeolites 

(powder form)..................................................31

Primary Gas Mixtures........................ 33

Primary Gas Mixtures ...............................................34

Carbon Monoxide in Air or Nitrogen...................34

Carbon Monoxide in Nitrogen......................34

Carbon Dioxide in Nitrogen...........................35

Continental and Oceanic Air.........................35

Hydrogen Sulfide in Nitrogen.......................35

Nitrogen Oxides in Air or Nitrogen.............36

Organic Components in Air Or Nitrogen..36

Oxygen in Nitrogen..........................................37

Sulfur Dioxide in Nitrogen..............................37

Fossil & Alternative Fuels .................. 39

Metal Constituents in Fossil Fuels 

(liquid forms) ...................................................40

Crude Oil, Bituminous Coal, Gasoline,

Subbituminous Coal......................................40

Residual Fuel Oil, Petroleum Coke, 

Metallurgical Coke, Middle Distillates.....41

Moisture in Oils and Alcohols 

(liquid form)......................................................42

Fossil Fuel: Trace Elements 

(solid forms)......................................................42

Biomass Constituents .....................................42

Organics.......................................... 43

Organics ...............................................................44

EPA: Organic Compounds..............................45

Perfluorinated and Polyfluorinated Alkyl 

Substances (PFAS)..........................................45

Crime Scene Investigations...........................45

Food & Agriculture............................ 47

Foods and Beverages - Macro 

and Micronutrients........................................48

Foods and Beverages - Other Components 

of Potential Interest.......................................49

Food Contaminants and Allergens.............49

Agricultural Materials (powder form) ........49

Wheat Hardness (kernel form) .....................49

Fertilizers (powder form) ...............................50

Tobacco Related Materials ............................50

Dietary Supplement Materials 

(includes nutraceuticals and herbs) ........50

Geological Materials & Ores ............... 53

Ores 

(powder form) .................................................54

Ore Bioleaching Substrate 

(powder form) .................................................54

Clays 

(powder form)..................................................54

Rock and Minerals 

(powder form)..................................................54

Refractories (powder form)............................55

Soils, Sediments, and Sludges 

(powder form) .................................................55
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vi

Ceramics & Glasses............................ 57

Nitrides

(powder form) .................................................58

Cemented Carbides 

(powder form)..................................................58

Glasses 

(powder and solid forms) ...........................58

Trace Elements 

(wafer form)......................................................58

Cement ........................................... 59

Cements and Related Materials 

(powder form)..................................................60

Portland Cement Clinkers 

(solid form) .......................................................60

Engine Wear Materials ...................... 61

Lubricating Oils .................................................62

Forensics......................................... 63

Ethanol Solutions .............................................64

Drugs of Abuse and Smoking Metabolites 

and Contaminates (urine)............................64

Crime Scene Investigations...........................64

DNA Profiling and Nucleic Acid Materials, 

and Monocolonal Antibody .......................64

Physical Properties

Ion Activity ..................................... 67

pH Calibration (powder form) ......................68

pD Calibration (powder form) ......................68

Ion-Selective Electrode Calibration

 (powder form) ................................................68

Polymeric Properties ........................ 69

Polymers 

(liquid, pellet, and powder forms) ...........70

Polymers ..............................................................70

Melt Flow Rate ...................................................70

Viscosity ................................................................70

Elements in Polymers ......................................70

Thermodynamic Properties ................ 71

Combustion Calorimetry 

(powder form) .................................................72

Differential Scanning Calorimetry and 

Differential Thermal Analysis......................72

Enthalpy and Heat Capacity .........................72

Thermal Analysis Purity Set ..........................72

Defining Fixed Point, International 

Temperature Scale of 1990, ITS-90 

(solid forms) .....................................................72

Reference Points (solid forms) ......................73

Freezing Point, Melting Point, and Triple 

Point Cells (solid forms) ...............................73

Thermocouple Materials 

and Thermometers .......................................73

Thermal Conductivity of Iron (rod form), 

Fibrous Glass, and Polystyrene .................73

Thermal Expansion of Metal, 

Glass (rod form)...............................................73

Thermal Resistance Properties of Fibrous 

Glass and Fumed Silica Board ...................73

Thermoelectric Materials ...............................73

NIST Measurement Services Websites of 

Interest...............................................................74

Optical Properties ............................ 75

Molecular Absorption 

(film, filter, solid, and solution forms)......76

Infrared Reflectance (solid form) ................76

Optical Rotation (powder form) ..................76

Fluorescence and Raman Spectroscopy ..77

Photography (chart form) .............................77

Radioactivity................................... 79

Radiation Dosimetry 

(wire form) ........................................................80

Special Nuclear Materials...............................80

Radiopharmaceuticals (solution and 

gaseous forms) ...............................................80

Radioactive Solutions .....................................81

Carbon-14 Dating (solid form) .....................82

Radioactive Natural Matrix Materials 

(powder form)..................................................82

Considering a Radioactive 

SRM(s) Order?...................................................82

Electrical Properties ......................... 83

Electrical Resistivity and Conductivity of 

Iron (rod form) ................................................84

Metrology ....................................... 85

Depth Profiling (wafer form) ........................86

Microscale Dimensional 

Measurement Standards ............................87

Liquids & Glasses.............................. 89

Chemical Resistance [Durability] 

of Glass (solid form) ......................................90

Viscosity of Glass (bar form) ..........................90

Glass Liquidus Temperature 

(solid form) .......................................................90

Relative Stress Optical Coefficient 

(bar form)...........................................................90

Electrical Properties of Dielectrics...............90

Viscosity Fixpoints (solid forms) ..................90

Density .................................................................90

X-Ray Diffraction.............................. 91

Diffraction and Scattering .............................92

Engineering Materials

Sizing ............................................. 93

Particle Size 

(powder and solid forms) ...........................94

Cement and Coal Fly Ash Fineness ............95

Particle Count Materials 

(powder and suspension forms) ..............95

Electrophoretic Mobility, E 

(suspension form) .........................................95

Surface Area of Powders and 

Mercury Porosimetry Standards ..............95

Surface Finish .................................. 97

Microindentation Hardness 

(block form) .....................................................98

Abrasive Wear 

(block form) .....................................................98

Surface Roughness 

(block form) ......................................................98

Rockwell Hardness 

(block form) .....................................................98

 Fire Research .................................. 99

Flooring Radiant Panel 

(sheet form) ..................................................100

Standard Cigarettes for Ignition Strength 

and Ignition Resistance Testing .............100

Nanomaterials ............................... 101

Nanomaterials 

(less than or equal to 100 nm) ...............102

Miscellaneous Performance ............. 103

Impact Standards: Charpy V-Notch 

Specimens .....................................................104

Tape Adhesion Testing 

(sheet form) ..................................................105

Bleached Kraft Pulps 

(sheet form) ..................................................105

Secondary Ferrite Standards .....................105

Fracture Toughness of Ceramics ..............106

Magnetic Moment ........................................106

Standard Bullet Replica 

and Cartridge Case ....................................106
Standard Reference Materials

for Chemical Composition

Ferrous Metals

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

1
Chemical Composition

Ferrous Metals 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

2

Plain Carbon Steels 

(chip form)

SRM Description

Unit of 

Issue

8k Bessemer Steel (Simulated), 0.1 % Carbon 150 g

12h Basic Open-Hearth Steel, 0.4 % Carbon 150 g

13g 0.6 % Carbon Steel 150 g

14g Carbon Steel (AISI 1078) 150 g

16f Basic Open-Hearth Steel, 1 % Carbon  150 g

19h Basic Electric Steel, 0.2 % Carbon 150 g

20g AISI 1045 Steel 150 g

152a Basic Open-Hearth Steel, 0.5 % Carbon 

(Tin Bearing)

150 g

178 0.4C Basic Oxygen Furnace Steel 150 g

368 Carbon Steel (AISI 1211) 150 g

See Table 101.1 on the website for more information.

Special Low Alloy Steels 

(chip and pin forms)

SRM Description

Unit of 

Issue

361 AISI 4340 Steel (chip form) 150 g

363 Chromium-Vanadium Steel 

(Modified) (chip form)

150 g

2160 Low-Alloy Steel (pin form) 200 g

2161 Low Alloy Steel (chip form) 150 g

2162 Low Alloy Steel (chip form) 150 g

2163 Low Alloy Steel (chip form) 150 g

2164 Low Alloy Steel (chip form) 150 g

2165 Low Alloy Steel (chip form) 150 g

2166 Low Alloy Steel (chip form) 150 g

2167 Low Alloy Steel (chip form) 150 g

2168 High-Purity Iron (chip form) 150 g

See Table 101.3 on the website for more information.

Low Alloy Steels 

(chip form) 

SRM Description

Unit of 

Issue

30f Cr-V Steel (SAE 6150) 150 g

32e Carbon Low Alloy Steel (SAE 3140) 150 g

33e Nickel Steel 150 g

72g Low Alloy Steel (AISI 4130) 150 g

100b Manganese Steel 150 g

125b LA Steel, High Silicon 100 g

129c LA Steel, High Sulfur (SAE 112) 150 g

131h Refined Cast Iron 100 g

139b Chromium-Nickel-Molybdenum Steel 150 g

155 Chromium-Tungsten Steel 150 g

163 Chromium Steel 100 g

179 LA Steel, High Silicon 150 g

291 Cr-Mo Steel (ASTM A-213) 150 g

293 Cr-Ni-Mo Steel (AISI 8620) 150 g

2171 LA Steel, (HSLA 100) 150 g

See Table 101.2 on the website for more information.

These SRMs are for checking optical emission and X-ray fluorescence spectrometric methods and for other methods of chemical 

analysis. They consist of steel alloys selected to provide a wide range of analytical values for elements. They are furnished as 

chips (small metal turnings), rods, disks, pins or powders from selected portions of commercial ingots. A “C” preceding the 

SRM number indicates a chill cast sample. Certificates are available on the website with information regarding specific alloy 

composition.
Chemical Composition

Ferrous Metals

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

3

Low Alloy Steels 

(disk and rod forms)

SRM Description

Unit of 

Issue

663 Chromium-Vanadium Steel (Modified) 5 rods

1134 Low-Alloy High-Silicon Steel disk

1135 LA Steel, High Silicon disk

1218 LA Steel, High Silicon disk

1224 LA Steel, Carbon (AISI 1078) disk

1225 LA Steel (AISI 4130) disk

1226 LA Steel disk

1227 LA Steel, Basic Open Hearth, 1 % C disk

1228 LA Steel, 0.1 % C disk

1264a LA Steel, High Carbon (Modified) disk

1265a Electrolytic Iron disk

1269 Line Pipe (AISI 1526 Modified) disk

1270 LA Steel, Cr-Mo (A336) (F-22) disk

1271 LA Steel (HSLA-100) disk

C1285 LA Steel (A242) (Modified) disk

1286 Low Alloy Steel (HY 80) disk

1761a Low Alloy Steel disk

1762b Low Alloy Steel disk

1763b Low Alloy Steel disk

1764a Low Alloy Steel disk

1765 Low Alloy Steel disk

1766 Low Alloy Steel disk

1767 Low Alloy Steel disk

1768 High-Purity Iron disk

See Table 101.8 on the website for more information.

High Alloy Steels 

(chip form) 

SRM Description

Unit of 

Issue

126c High-Nickel Steel 

(Nominal Mass Fraction 36 % Ni)

150 g

344 15 Chromium-7 Nickel Steel 

(Mo Precipitation Hardening)

150 g

345b Fe-Cr-Ni Alloy UNS J92180 150 g

346a Valve Steel 150 g

862 High-Temperature Alloy L 605 100 g

868 High-Temperature Alloy (Fe-Ni-Co) 100 g

See Table 101.4 on the website for more information.

High-Temperature Alloys 

(chip and disk forms)

SRM Description

Unit of 

Issue

866 Incoloy 800 (chip form) 100 g

867 Ni-Fe-Cr Alloy UNS N08825 (chip form) 100 g

1230 High-Temperature Alloy A286  disk

1246 Incoloy 800 disk

1247 Ni-Fe-Cr Alloy UNS N08825 disk

1250 High-Temperature Alloy Fe-Ni-Co disk

C2400 Fe-Cr-Ni Alloy UNS J92180  disk

See Table 101.9 on the website for more information.
Chemical Composition

Ferrous Metals 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

4

Stainless Steels 

(chip and powder form) 

SRM Description

Unit of 

Issue

101g 18 Cr-10 Ni Steel (AISI 304L) (powder form) 100 g

123c Stainless Steel, Cr-Ni-Nb (AISI 348) 

(chip form)

150 g

133b Chromium-Molybdenum Steel 

(chip form)

150 g

160b Stainless Steel, Cr 18-Ni 12-Mo 2 

(AISI 316) (chip form)

150 g

166c Stainless Steel, Low-Carbon (AISI 316L)

(chip form)

100 g

339 17 Chromium-9 Nickel-0.2 Selenium Steel

(chip form)

150 g

893 Stainless Steel (SAE 405) (chip form) 150 g

895 Stainless Steel (SAE 201) (chip form) 150 g

See Table 101.6 on the website for more information.

Stainless Steels 

(disk form)

SRM Description

Unit of 

Issue

C1151a Stainless Steel, 23Cr-7Ni disk

C1152a Stainless Steel, 18Cr-11Ni disk

C1153a Stainless Steel, 17Cr-9Ni disk

C1154a Stainless Steel, 19Cr-13Ni disk

1155a

Stainless Steel, Cr 18 Ni 12 Mo 2 

(AISI 316) disk

1171

Stainless Steel, Cr 17-Ni 11-Ti 0.3 

(AISI 321) disk

1172

Stainless Steel, Cr 17-Ni 11-Nb 0.6 

(AISI 348) disk

1219

Stainless Steel, Cr16 - Ni2 (AISI 431) 

(disk form) disk

1223 Chromium Steel disk

1295 Stainless Steel (SAE 405) disk

C1296 Stainless Steel disk

1297 Stainless Steel (SAE 201) disk

See Table 101.10 on the website for more information.

Tool Steels 

(chip form)

SRM Description

Unit of 

Issue

50c Tungsten-Chromium-Vanadium Steel 150 g

132b Tool Steel (AISI M2) 150 g

134a Molybdenum-Tungsten-ChromiumVanadium Steel150 g

See Table 101.7 on the website for more information.

Steelmaking Alloys 

(powder form)

These SRMs are for checking chemical methods of analysis 

for major constituents and selected minor elements. They 

are furnished as fine powders (usually <0.1 mm).

SRM Description

Unit of 

Issue

57b Silicon Metal 40 g

58a Ferrosilicon (73 % Si Regular Grade) 75 g

59a Ferrosilicon Grade E1 50 g

64c Ferrochromium High-Carbon 100 g

68c High-Carbon Ferromanganese 100 g

90 Ferrophosphorus 75 g

195 Ferrosilicon (75 % Si-High Purity Grade) 75 g

196 Ferrochromium Low-Carbon 100 g

689 Ferrochromium Silicon 100 g

See Table 101.12 on the website for more information.
Chemical Composition

Ferrous Metals

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5

Specialty Steels 

(disk form)

SRM Description

Unit of 

Issue

1157 Tool Steel (AISI M2) disk

1158 High-Nickel Steel 

(Nominal Mass Fraction 36 % Ni) 

disk

1772 Tool Steel (S-7) disk

See Table 101.11 on the website for more information.

Gases in Ferrous Metals 

(rod and disk forms)

These SRMs are for determining oxygen and nitrogen by 

vacuum fusion, inert gas fusion, and neutron activation 

methods. 

SRM Description

Unit of 

Issue

1089† Steels, Set (consists of SRMs 1095, 1096, 

1097, 1098 and 1099)

5 rods

1090 Oxygen in Ingot Iron rod

1091a Oxygen in Stainless Steel (AISI 431) rod

1093 Oxygen in Valve Steel rod

1094 Oxygen in Maraging Steel rod

1755 Nitrogen in Low Alloy Steel disk

† These SRMs are sold only as a set designated SRM 1089.

See Table 101.5 on the website for more information.

Cast Steels, White Cast Irons, and 

Ductile Irons (disk and block forms)

These SRMs are for analysis of cast steels and cast irons by 

rapid instrumental methods.

SRM Description

Unit of 

Issue

C1137a White Cast Iron disk

1138a Cast Steel Standard block

C1145a White Cast Iron disk

1173 Ni-Cr-Mo-V Steel disk

C1173 Cast Steel 3 disk

C1290 High-Alloy White Cast Iron (HC-250+V) disk

C1291 High-Alloy White Cast Iron 

(Ni-Hard, Type I)

disk

C1292 High-Alloy White Cast Iron I 

(Ni-Hard, Type IV)

disk

C2424 Ductile Iron C disk

See Table 101.14 on the website for more information.

Cast Irons 

(chip form) 

SRM Description

Unit of 

Issue

4l Cast Iron 150 g

5m Cast Iron 150 g

6g Cast Iron 150 g

107c Cast Iron (Ni-Cr-Mo) 150 g

115a Copper-Nickel-Chromium Cast Iron 150 g

122i Cast Iron 150 g

334 Gray Cast Iron 150 g

See Table 101.13 on the website for more information.
6

Chemical Composition

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New SRMs/RMs

Check out our SRM website (www.nist.gov/srm) for news regarding SRMs/RMs. 

This includes information about newly released SRMs, RMs, 

Renewals and Revisions. It also has links to available resources for 

questions or ordering SRMs. 

Would you like to add your name to our mailing 

list to receive updates on New SRMs/RMs ?

Sign up on our homepage at

https://www.nist.gov/srm under New SRMs/RMs

6 6
7

Ferrous Metals Standard Reference Materials

for Chemical Composition

Nonferrous Metals

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

7
Chemical Composition

Nonferrous Metals 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

8

Aluminum Base Alloys 

(chip and disk forms) 

These SRMs are intended for analyses of aluminum 

alloys by chemical and instrumental methods. 

SRM 2426 is a hot-dip coating alloy for sheet steel 

applications. 

SRM Description

Unit of 

Issue

87a Silicon-Aluminum Alloy (chip form) 75 g

853a Aluminum Alloy 3004 (chip form) 40 g

854a Aluminum Alloy 5182 (chip form) 40 g

855a Aluminum Casting Alloy 356 (chip form) 30 g

856a Aluminum Casting Alloy 380 (chip form) 30 g

858 Aluminum Alloy 6011 (chip form) 35 g

1240c Aluminum Alloy 3004 disk

1241c Aluminum Alloy 5182 disk

1255b Aluminum Alloy 356 disk

1256b Aluminum Alloy 380 disk

1258-I Aluminum Alloy 6011 (Modified) disk

1259 Aluminum Alloy 7075 disk

2426 55 % Aluminum-Zinc Alloy 40 g

See Table 102.1 on the website for more information.

 Cobalt Base Alloys 

(chip and disk forms)

SRM Description

Unit of 

Issue

862 High-Temperature Alloy L 605 (chip form) 100 g

1242 High Temperature Alloy L 605 disk

1775 Refractory Alloy MP-35-N disk

2175 Refractory Alloy MP-35-N (chip form) 150 g

See Table 102.2 on the website for more information.

Copper Base Alloys 

(chip, granule, and rod forms)

SRM Description

Unit of 

Issue

158a Silicon Bronze (chip form) 150 g

458 Beryllium-Copper (17510) (chip form) 50 g

459 Beryllium-Copper (17200) (chip form) 50 g

460 Beryllium-Copper Alloy (chip form) 50 g

871 Phosphor Bronze (CDA 521) (chip form) 100 g

872 Phosphor Bronze (CDA 544) (chip form) 100 g

874 Cupro-Nickel, 10 % (CDA 706) 

“HIGH-PURITY” (chip form)

100 g

875 Cupro-Nickel, 10 % (CDA 706) 

“DOPED” (chip form)

100 g

880 Nickel Silver (CDA 770) (granular form) 100 g

1034 Unalloyed Copper rod

1035 Leaded-Tin Bronze Alloy (chip form) 50 g

See Table 102.3 on the website for more information.

Copper “Benchmark” 

(block, chip, and rod forms)

SRMs with a “C” prefix are chill-cast blocks approximately 

32 mm square and 19 mm thick.

SRM Description

Unit of 

Issue

399 Unalloyed Copper - Cu VI (chip form) 50 g

454 Unalloyed Copper XI (chip form) 35 g

457 Unalloyed Copper IV (solid) rod

494 Unalloyed Copper I (solid) rod

495 Unalloyed Copper II (solid) rod

498 Unalloyed Copper V (solid) rod

500 Unalloyed Copper - Cu VII rod

C1251a Phosphorus Deoxidized Copper - Cu VIII block

C1252a Phosphorus Deoxidized Copper - Cu IX block

See Table 102.5 on the website for more information.

These SRMs are intended for optical emission, X-ray fluorescence spectrometric methods, and for other methods of chemical 

analysis. They consist of alloys selected to provide a wide range of analytical values for elements. They are furnished as chips 

(small metal turnings), rods, disks, pins or powders from selected portions of commercial ingots. A “C” preceding the SRM number 

indicates a chill cast sample. Certificates are available on the website with information regarding specific alloy composition.
Nonferrous Metals

Chemical Composition

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9

Copper Base Alloys

 (block and disk forms) 

The SRMs with a “C” prefix are chill-cast blocks, 

31 mm square and 19 mm thick; the others are wrought 

disks, 31 mm in diameter and 19 mm thick. Both forms have 

nearly identical elemental compositions.

SRM Description

Unit of 

Issue

1107 Naval Brass UNS 46400 disk

1110 Red Brass B disk

1111 Red Brass Standard disk

1112 Gilding Metal disk

1113 Gilding Metal disk

1114 Gilding Metal disk

1115 Commercial Bronze Standard for Optical

Emission and X-ray Spectroscopic Analysis

disk

C1115 Commercial Bronze A block

1116 Commercial Bronze Standard for Optical 

Emission and X-ray Spectroscopic Analysis

disk

1117 Commercial Bronze Standard for Optical 

Emission and X-ray Spectroscopic Analysis

disk

C1117 Commercial Bronze C block

1124 Free Cutting Brass (UNS C36000) disk

C1251a Phosphorus Deoxidized Copper - Cu VIII block

C1252a Phosphorus Deoxidized Copper - Cu IX block

C1253a Phosphorus Deoxidized Copper - Cu X block

See Table 102.4 on the website for more information.

Lead-Base Alloys 

(disk and powder forms)

SRMs in the form of disks are approximately 50 mm in 

diameter and 16 mm thick.  They are intended for use with 

optical emission spectrometric methods of analysis.

SRM Description

Unit of 

Issue

53e Lead-Base Bearing Metal (84Pb-10Sb-6Sn) 150 g

127b Solder (40Sn—60Pb) 150 g

1129 Solder (63Sn—37Pb) 200 g

1131 Solder (40Sn—60Pb) disk

1132 Lead-Base Bearing Metal (84Pb-10Sb-6Sn) disk

C2415a Battery Lead (UNS 52770) disk

C2416 Bullet Lead disk

C2417 Lead-Base Alloy disk

C2418 High-Purity Lead disk

See Table 102.10 on the website for more information.

Nickel Base Alloys 

(chip, disk, and granule forms)

SRM Description

Unit of 

Issue

349a Waspaloy (chip form) 150 g

861 Nickel-based Superalloy PWA 1484 

(chip form)

50 g

864 Nickel Alloy UNS N06600 (chip form) 100 g

865 Inconel 625 (chip form) 150 g

882 Nickel-Copper Alloy (65Ni-31Cu-3Al)

(chip form)

100 g

897 Tracealloy A (chip form) 35 g

899 Tracealloy C (chip form) 35 g

1159 Electronic and Magnetic Alloy Standard disk

1160 Electronic and Magnetic Alloy Standard disk

1243 Ni-Cr-Co Alloy UNS N07001 disk

1244 Nickel Alloy UNS N06600 disk

C1248 Nickel-Copper Alloy disk

1249 Ni-Cr-Fe-Nb-Mo Alloy UNS N077178 disk

1775 Refractory Alloy MP-35-N disk

2175 Refractory Alloy MP-35-N (chip form) 150 g

See Table 102.12 on the website for more information.
Chemical Composition

Nonferrous Metals 

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10

Tin Base Alloys 

(powder, block, and disk forms)

SRM Description

Unit of 

Issue

54d Bearing Metal (Tin Base) (powder) 75 g

1727 Anode Tin block

1728 Tin Alloy (Sn-3Cu-0.5Ag) disk

1729 Tin Alloy (97Sn-3Pb) disk

See Table 102.15 on the website for more information.

Titanium Base Alloys 

(chip and disk forms) 

SRM Description

Unit of 

Issue

173c Titanium Alloy UNS R56400 (chip form) 50 g

641 Spectroscopic Titanium-Base Standards 

Titanium Alloy, 8 Mn (A)

disk

643 Spectroscopic Titanium-Base Standards 

Titanium Alloy, 8 Mn (C)

disk

647 Titanium Alloy, Al-Mo-Sn-Zr (chip form) 50 g

648 Titanium-Base Alloy 5Al-2Sn-2Zr-4Cr-4Mo

(chip form)

50 g

649 Titanium-Base Alloy (15V-3Al-3Cr-3Sn) 

(chip form)

50 g

654b Titanium Alloy, Al-V disk

1128 Titanium-Base Alloy (15V-3Al-3Cr-3Sn) disk

2061 TiAl(NbW) Alloy for Microanalysis cube

2431 Titanium-Base Alloy (6Al-2Sn-4Zr-6Mo)

(chip form)

50 g

2432 Titanium-Base Alloy (10V-2Fe-3Al) 

(chip form)

50 g

2433 Titanium-Base Alloy (8Al-1Mo-1V) 

(chip form)

50 g

2452 Hydrogen In Titanium Alloy (Nominal 

Mass Fraction 60 mg/kg H) (chip form)

10 g

2453a Hydrogen In Titanium Alloy (Nominal 

Mass Fraction 125 mg/kg H) (pin form)

10 g

2454a Hydrogen In Titanium Alloy (Nominal 

Mass Fraction 200 mg/kg H) (chip form)

10 g

See Table 102.16 on the website for more information.

Zinc Base Alloys 

(block, chip, and disk forms)

SRM 1738 through 1741 and SRM 2139 are specially 

prepared alloys primarily intended for use with 

spectrometric methods of analysis.

SRM Description

Unit of 

Issue

625 Spectrographic Zinc-Base Die-Casting Alloy A block

626 Spectrographic Zinc-Base 

Die-Casting Alloy B

block

627 Spectrographic Zinc-Base 

Die-Casting Alloy C

block

628 Spectrographic Zinc-Base 

Die-Casting Alloy D

block

629 Spectrographic Zinc-Base 

Die-Casting Alloy E

block

630 Spectrographic Zinc-Base 

Die-Casting Alloy F

block

631 Spectrographic Zinc Spelter (Modified) block

1738 Zinc-Aluminum Alloy disk

1740 Zinc-Aluminum Alloy disk

1741 Zinc-Aluminum Alloy disk

2139 Zinc-Aluminum Alloy (chip form) 100 g

See Table 102.17 on the website for more information.
Nonferrous Metals

Chemical Composition

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11

Standard Reference Materials

for Chemical Composition

Microanalysis
Chemical Composition

Microanalysis

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12 12

Metals 

(rod, wire, disk, and cube forms) 

SRM Description

Unit of 

Issue

480 Tungsten 20 % - Molybdenum Alloy 

Electron Microprobe Standard

disk

481 Gold-Silver Wires for Microprobe Analysis set (6)

482 Gold-Copper Wires for Microprobe Analysis set (6)

2061 TiAl(NbW) Alloy for Microanalysis cube

See Table 103.1 on the website for more information.

Synthetic Glass for Microanalysis 

(rod and microsphere forms)

The glass SRM listed below is suitable for microanalysis, 

such as electron microprobe analysis (EMPA), secondary 

ion mass spectrometry (SIMS), and other methods that 

require high homogeneity.

SRM Description

Unit of 

Issue

2066 K-411 Glass Microspheres 50 mg

See Table 103.2 on the website for more information.

Semiconductor Thin Film for 

the Composition of Thin Films

SRMs 2841 and 2842 are intended for use as a reference 

standard for analytical methods that measure the 

composition of thin films, such as electron microprobe 

analysis (EMPA), photoluminesence (PL), auger electron 

spectroscopy (AES), and X-ray photoelectron spectroscopy 

(XPS). The SRM consists of an epitaxial layer of ALxGa1-xAs, 

3μm thick, on a 1 cm x 1 cm square of GaAs substrate. 

The semiconductor chip is attached with carbon tape to a 

2.5 cm diameter stainless steel disk for labeling and 

handling.

SRM Description

Unit of 

Issue

2841 Semiconductor Thin Film:  AlxGa1-xAs 

Epitaxial Layers (Al mole fraction x near 0.20)

disk

2842 Semiconductor Thin Film: AlxGa1-xAs 

Epitaxial Layers (Al mole fraction x near 0.30)

disk

See Table 103.4 on the website for more information.
Nonferrous Metals

Chemical Composition

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Chemical Composition

 High-Purity Materials

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

13
Chemical Composition

High-Purity Materials 

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14

High-Purity Metals 

(solid forms) 

These SRMs are for determining impurity elements in high 

purity metals.

SRM Description

Unit of 

Issue

682 High-Purity Zinc block

683 Zinc Metal block

728 Intermediate-Purity Zinc (pellet form) 450 g

885 Refined Copper (pin form) 200 g

See Table 104.1 on the website for more information.

Stoichiometry 

(powder form)

These SRMs are defined as primary, working, and secondary 

standards in accordance with recommendations of the 

Analytical Chemistry Section of the International Union of 

Pure and Applied Chemistry [Ref. Analyst 90, 251 (1965)]. 

These definitions are as follows:

Primary Standard:

A commercially available substance of purity 100 % ± 0.02 % 

(Purity 99.98+ %).

Working Standard:

A commercially available substance of purity 100 % ± 0.05 % 

(Purity 99. 95+ %).

Secondary Standard:

A substance of lower purity which can be standardized 

against a primary grade standard.

SRM Description

Unit of 

Issue

17g Sucrose Optical Rotation 60 g

84l Potassium Hydrogen Phthalate 60 g

136f Potassium Dichromate, (Oxidimetric Standard) 60 g

350c Benzoic Acid (Acidimetric Standard) 30 g

351a Sodium Carbonate (Acidimetric Standard) 50 g

723e Tris(hydroxymethyl)aminomethane 

(HOCH2)CNH2 Acidimetric Standard

50 g

917c D-Glucose (Dextrose) 50 g

973 Boric Acid Acidimetric Standard 100 g

999c Potassium Chloride Primary Standard 30 g

8040a Sodium Oxalate (Reductometric Standard) 60 g

See Table 104.3 on the website for more information.

Microchemistry 

(powder form)

SRM Description

Unit of 

Issue

141e Acetanilide 2 g

143d Cystine (L-Cystine) 2 g

2141 Urea 2 g

2143 p-Fluorobenzoic Acid 2 g

2144 m-Chlorobenzoic Acid 2 g

See Table 104.4 on the website for more information.

Spectrometry, Single-Element 

Standard Solutions

These SRMs are intended as the primary calibration 

standards for the quantitative determinations of a single 

element, typically using inductively coupled plasma optical 

emission spectrometry and/or inductively coupled plasma 

mass spectrometry. They can also be used in conjunction 

with any other analytical technique or procedure where 

standard solutions are required. The SRM is a singleelement solution of 50 mL with a nominal concentration of 

10 mg/g and is provided as either a single high-density 

polyethylene bottle or in 5 x 10 mL borosilicate glass 

ampoules. Solutions may contain a nominal amount of 

acid, such as 10 % nitric acid or 10 % hydrochloric acid. 

SRM Description

Unit of 

Issue

3030 Monomethylarsonic Acid Standard Solution 2 x 5 mL

3031 Dimethylarsinic Acid Standard Solution 2 x 5 mL

3033 Arsenobetaine Standard Solution 2 x 5 mL

3034 Arsenocholine Standard Solution   2 x 5 mL

3036 Arsenic Acid (AsV) Standard Solution 2 x 10 mL

3037 Arsenous Acid (AsIII) Standard Solution 2 x 10 mL

3101a Aluminum (Al) Standard Solution 5 x 10 mL

3102a Antimony (Sb) Standard Solution 50 mL

3103a Arsenic (As) Standard Solution 5 x 10 mL

3104a Barium (Ba) Standard Solution 50 mL

3105a Beryllium (Be)  Standard Solution 5 x 10 mL

3106 Bismuth (Bi) Standard Solution 5 x 10 mL

3107 Boron (B) Standard Solution 50 mL

3108 Cadmium (Cd) Standard Solution 5 x 10 mL

3109a Calcium (Ca) Standard Solution 5 x 10 mL

3110 Cerium (Ce) Standard Solution 5 x 10 mL
Chemical Composition

High-Purity Materials

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15

SRM Description

Unit of 

Issue

3111a Cesium (Cs) Standard Solution 5 x 10 mL

3112a Chromium (Cr) Standard Solution 5 x 10 mL

3113 Cobalt (Co) Standard Solution 5 x 10 mL

3114 Copper (Cu) Standard Solution 50 mL

3115a Dysprosium (Dy) Standard Solution 5 x 10 mL

3116a Erbium (Er) Standard Solution 5 x 10 mL

3117a Europium (Eu) Standard Solution 5 x 10 mL

3118a Gadolinium (Gd) Standard Solution 5 x 10 mL

3119a Gallium (Ga) Standard Solution 5 x 10 mL

3120a Germanium (Ge) Standard Solution 50 mL

3121 Gold (Au) Standard Solution 5 x 10 mL

3122 Hafnium (Hf) Standard Solution 50 mL

3123a Holmium (Ho) Standard Solution 5 x 10 mL

3124a Indium (In) Standard Solution 5 x 10 mL

3126a Iron (Fe) Standard Solution 5 x 10 mL

3127a Lanthanum (La) Standard Solution 5 x 10 mL

3128 Lead (Pb) Standard Solution 5 x 10 mL

3129a Lithium (Li) Standard Solution 5 x 10 mL

3130a Lutetium (Lu) Standard Solution 5 x 10 mL

3131a Magnesium (Mg) Standard Solution 5 x 10 mL

3132 Manganese (Mn) Standard Solution 5 x 10 mL

3133 Mercury (Hg) Standard Solution 5 x 10 mL

3134 Molybdenum (Mo) Standard Solution 5 x 10 mL

3135a Neodymium (Nd) Standard Solution 5 x 10 mL

3136 Nickel (Ni) Standard Solution 5 x 10 mL

3137 Niobium (Nb) Standard Solution 50 mL

SRM Description

Unit of 

Issue

3138 Palladium (Pd) Standard Solution 5 x 10 mL

3139a Phosphorus (P)  Standard Solution 5 x 10 mL

3140 Platinum (Pt) Standard Solution 5 x 10 mL

3141a Potassium (K) Standard Solution 5 x 10 mL

3142a Praseodymium (Pr) Standard Solution 5 x 10 mL

3143 Rhenium (Re) Standard Solution 5 x 10 mL

3144 Rhodium (Rh) Standard Solution 5 x 10 mL

3145a Rubidium (Rb) Standard Solution 5 x 10 mL

3147a Samarium (Sm) Standard Solution 5 x 10 mL

3148a Scandium (Sc) Standard Solution 5 x 10 mL

3149 Selenium (Se) Standard Solution 5 x 10 mL

3150 Silicon (Si) Standard Solution 50 mL

3151 Silver (Ag) Standard Solution 5 x 10 mL

3152a Sodium (Na) Standard Solution 50 mL

3153a Strontium (Sr) Standard Solution 5 x 10 mL

3154 Sulfur (S) Standard Solution 5 x 10 mL

3155 Tantalum (Ta) Standard Solution 50 mL

3156 Tellurium (Te) Standard Solution 5 x 10 mL

3157a Terbium (Tb) Standard Solution 5 x 10 ml

3158 Thallium (Tl) Standard Solution 5 x 10 mL

3160a Thulium (Tm) Standard Solution 5 x 10 mL

3161a Tin (Sn) Standard Solution 50 mL

3162a Titanium (Ti) Standard Solution 50 mL

3163 Tungsten (W) Standard Solution 50 mL

3164 Uranium (U) Standard Solution (Radioactive) 5 x 10 mL

3165 Vanadium (V) Standard Solution  5 x 10 mL

3166a Ytterbium (Yb) Standard Solution 5 x 10 mL

3167a Yttrium (Y) Standard Solution 5 x 10 mL

3168a Zinc (Zn) Standard Solution 5 x 10 mL

3169 Zirconium (Zr) Standard Solution 50 mL

3177 Mercuric Chloride (HgCl2) Standard Solution 5 x 10 mL

See Table 104.5 on the website for more information.
Chemical Composition

High-Purity Materials 

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16

Arsenic Species 

Standard Solutions 

These SRMs are intended as calibration standards to 

provide SI traceability in the measurement of total arsenic 

and arsenic species in food and clinical samples.

SRM Description

Unit of 

Issue

3030 Monomethylarsonic Acid Standard Solution 2 x 5 mL

3031 Dimethylarsinic Acid Standard Solution 2 x 5 mL

3033 Arsenobetaine Standard Solution 2 x 5 mL

3034 Arsenocholine Standard Solution   2 x 5 mL

3036 Arsenic Acid (AsV) Standard Solution 2 x 10 mL

3037 Arsenous Acid (AsIII) Standard Solution 2 x 10 mL

3103a Arsenic (As) Standard Solution 5 x 10 mL

See Table 104.6 on the website for more information.

Anion Chromatography 

(solution form) 

These SRMs are single component solutions prepared 

gravimetrically for use in anion chromatography or any 

other technique that requires aqueous standard solutions 

for calibration or control materials. 

SRM Description

Unit of 

Issue

3180 Iodide Anion (I-) Standard Solution 5 x 5 mL

3181 Sulfate Anion (SO4

2-) Standard Solution 5 x 10 mL

3182 Chloride Anion (Cl-) Standard Solution 5 x 10 mL

3183 Fluoride Anion (F-) Standard Solution 50 mL

3184 Bromide Anion (Br -) Standard Solution 5 x 10 mL

3185 Nitrate Anion (NO3

-

) Standard Solution 5 x 10 mL

3186 Phosphate Anion (PO4

3-) Standard Solution 5 x 10 mL

See Table 104.8 on the website for more information.

Stable Isotopic Materials 

(solid and solution forms)

The isotopic composition of these SRMs has been 

determined by mass spectrometry. For light stable isotopic 

materials value assigned on an artifact based scale, see 

Light Stable Isotopic Materials. 

SRM Description

Unit of 

Issue

951a Boric Acid Isotopic Standard 10 g

952 Enriched Boric Acid Standard  0.25 g

973 Boric Acid Acidimetric Standard 100 g

975a Isotopic Standard for Chlorine 0.25 g

977 Isotopic Standard for Bromine 0.25 g

978a Assay-Isotopic Standard for Silver 0.25 g

979 Chromium Isotopic Standard 0.25 g

980 Isotopic Standard for Magnesium 0.25 g

981 Common Lead Isotopic Standard (wire) 1 g

982 Equal-Atom Lead Isotopic Standard (wire) 1 g

983 Radiogenic Lead Isotopic Standard (wire) 1 g

984 Rubidium Chloride 0.25 g

986 Isotopic Standard for Nickel 0.5 g

987 Strontium Carbonate Isotopic Standard 1 g

994 Isotopic Standard for Gallium 0.25 g

997 Thallium Isotopic Standard 0.25 g

3230 Iodine-129 Isotopic Standard (Low Level) 5 x 5 mL

3231 Iodine-129 Isotopic Standard (High Level) 5 x 5 mL

8599 Henderson Molybdenite 10 g

See Table 104.9 on the website for more information.
Chemical Composition

High-Purity Materials

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17

Light Stable Isotopic Materials 

(gas, liquid, and solid forms)

These RMs are for calibration of isotope-ratio mass 

spectrometers and associated sample preparation 

systems. They are distributed by NIST on behalf of the 

International Atomic Energy Agency (IAEA). At the 

request of the IAEA, quantities of these materials are 

limited to one unit of each RM per laboratory every 

3 years. The isotopic compositions are given in parts 

per thousand difference from isotope-ratio standards - 

Hydrogen and Oxygen: Vienna Standard Mean Ocean 

Water (VSMOW), Carbon: Vienna PeeDee Belemnite (VPDB), 

Nitrogen: atmospheric N2 (Air), Silicon: NBS28 Silica Sand 

(optical), and Sulfur: Vienna Canyon Diablo Troilite (VCDT). 

RM 8545 (LSVEC) is also expressed as an absolute isotopic 

ratio.

SRM Description

Unit of 

Issue

8301 Boron Isotopes in Marine Carbonate 

(Simulated Coral and Foraminifera Solutions)

6 x 4 mL

8529 IAEA-S-3 (Sulfur Isotopes in Silver Sulfide) 1 x 0.5 g

8535a VSMOW2 Vienna Standard Mean Ocean Water 

(Hydrogen and Oxyen Isotopes in Water)

20 mL

8536 GISP-Water 20 mL

8537 SLAP-Water Light Stable Isotopic Standard 20 mL

8539 NBS22 Oil 

(Carbon and Hydrogen Isotopes in Oil)

1 mL

8540 IAEA-CH-7 (Carbon and Hydrogen Isotopes 

in Polyethylene Foil)

3.5 g

8541 USGS24 Graphite 

(Carbon Isotopes in Graphite)

0.8 g

8542 IAEA-CH-6 Sucrose 

(Carbon Isotopes in Sucrose)

1 g

8544 NBS 19 Limestone 

(Carbon and Oxygen Isotopes in Carbonate)

0.4 g

8545 LSVEC (Carbon, Oxygen, and Lithium 

Isotopes in Lithium Carbonate)

0.4 g

8546 NBS28 

(Silicon and Oxygen Isotopes in Silica Sand) 

0.4 g

8547 IAEA-N-1 (Nitrogen Isotopes 

in Ammonium Sulfate)

0.4 g

8548 IAEA-N-2 (Nitrogen Isotopes 

in Ammonium Sulfate)

0.4 g

8550 USGS25 (Nitrogen Isotopes 

in Ammonium Sulfate)

0.5 g

8551 USGS26 (Nitrogen Isotopes i

n Ammonium Sulfate)

0.5 g

SRM Description

Unit of 

Issue

8552 NSVEC (Nitrogen Isotopes 

in Gaseous Nitrogen)

300 μmol

8553 IAEA-S-4 (Soufre De Lacq)

(Sulfur Isotopes in Elemental Sulfur) 

0.5 g

8554 IAEA-S-1 (Sulfur Isotopes in Silver Sulfide) 0.5 g

8555 IAEA-S-2 (Sulfur Isotopes in Silver Sulfide) 0.5 g

8557 NBS127 (Sulfur and Oxygen Isotopes 

in Barium Sulfate)

0.5 g

8558 USGS32 (Nitrogen and Oxygen Isotopes 

in Nitrate)

0.9 g

8562 CO2-

13C-enriched, Paleomarine Origin 

(Carbon Dioxide)

set (2)

8563 CO2-

13C-depleted, Petrochemical Origin 

(Carbon Dioxide)

set (2)

8564 CO2-Biogenic, Modern Biomass Origin 

(Carbon Dioxide)

set (2)

8568 USGS34 (Nitrogen and Oxygen Isotopes 

in Nitrate)

0.9 g

8569 USGS35 (Nitrogen and Oxygen Isotopes 

in Nitrate)

0.9 g

8574 L-glutamic Acid USGS41 (Heavy Carbon 

and Nitrogen Isotopes in L-glutamic Acid)

0.5 g

See Table 104.10 on the website for more information.
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18

March 18-22, 2023

Pittcon Conference and Exposition

Philadelphia, PA 

July 23–27, 2023

AACC Annual Scientific Meeting 

& Clinical Lab Exposition 

Anaheim, CA 

August 25-30, 2023

AOAC 137th Annual Meeting and 

Exposition

New Orleans, LA

NIST 2023 SRM 

EXHIBIT SCHEDULE
Standard Reference Materials

for Chemical Composition

Ferrous Metals

Standard Reference Materials

for Chemical Composition

 Health & Industrial Hygiene

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

19
Chemical Composition

Health & Industrial Hygiene 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

20

Clinical Laboratory Materials 

(gas, liquid, and solid forms) 

The following SRMs (Table 105.1) are intended for validating 

analytical methods used in clinical and pathology 

laboratories. Additional information on the serum

 materials is given in Table 105.2.

SRM Description

Unit of 

Issue

909c Frozen Human Serum 3 x 2 mL

911c Cholesterol 2 g

912b Urea-Clinical 25 g

913b Uric Acid 10 g

914b Creatinine 10 g

915b Calcium Carbonate (Clinical Standard) 20 g

916b Bilirubin 100 mg

917c D-Glucose (Dextrose) 50 g

918c Potassium Chloride (Clinical) 30 g

919b Sodium Chloride (Clinical) 30 g

920 D-Mannitol 50 g

921a Cortisol (Hydrocortisone) 1 g

924a Lithium Carbonate 30 g

927f Bovine Serum Albumin (7 %, solution)

(Total Protein Solution)

10 x 2.2 mL

928 Lead Nitrate (Clinical) 30 g

929a Magnesium Gluconate 5 g

937 Iron Metal (Clinical Standard) 50 g

955d Toxic Metals and Metabolites 

in Frozen Human Blood

set (6) 

956d Electrolytes in Frozen Human Serum set (6)

965b Glucose in Frozen Human Serum set (8)

967a Creatinine in Frozen Human Serum set (4)

968f Fat-Soluble Vitamins 

in Frozen Human Serum

set (2)

971a Hormones in Frozen Human Serum set (2)

972a Vitamin D Metabolites 

in Frozen Human Serum

set (4)

998 Angiotensin I (Human) 0.5 mg

1400 Bone Ash 50 g

1401 Trace Metals in Frozen Human Blood set (4)

1486 Bone Meal 50 g

1595 Tripalmitin 2 g

1598a Inorganic Constituents in Animal Serum 2 vials

1949 Frozen Human Prenatal Serum set (8)

1950 Metabolites in Frozen Human Plasma 5 x 1 mL

SRM Description

Unit of 

Issue

1951c Lipids in Frozen Human Serum set (4)

1955 Homocysteine and Folate 

in Frozen Human Serum 

set (3) 

2365 BK Virus DNA Quantitative Standard 110 μL

2366a Cytomegalovirus DNA (Towne∆147 BAC)

 for DNA Measurements

150 μL

2378 Fatty Acids in Frozen Human Serum set (3)

2389a Amino Acids in 0.1 mol/L 

Hydrochloric Acid

5 x 1.2 mL

2668 Toxic Elements in Frozen Human Urine set (10)

2669 Arsenic Species in Frozen Human Urine set (10)

2921 Human Cardiac Troponin Complex 5 x 115 μL

2924 C-Reactive Protein Solution 3 x 1 mL

2925 Recombinant Human Serum Albumin 

Solution (Primary Reference Calibrator 

for Urine Albumin) (Frozen)

2 x 0.5 mL

2926 Recombinant Human Insulin-like 

Growth Factor 1 (Frozen)

3 x 0.25 mL

2927 15N-Labeled Recombinant Human 

Insulin-like Growth Factor 1 (Frozen)

3 x 50 μL

2968 3-Epi-25-Hydroxvitamin D3 Calibration 

Solution

5 x 1.2 mL

2969 Vitamin D Metabolites in Frozen Human Serum 

(Total 25-Hydroxyvitamin D Low Level)

2 x 1 mL

2970 Vitamin D Metabolites in Frozen Human Serum 

(25-Hydroxyvitamin D2 High Level)

2 x 1 mL

2971 24R,25-Dihydroxyvitamin D3 Calibration 

Solution

5 x 1 mL

2972b 25-Hydroxyvitamin D Calibration Solutions 20 x 1.2 

mL

2973 Vitamin D Metabolites in Frozen Human 

Serum (High Level)

2 x 1 mL

3030 Monomethylarsonic Acid Standard Solution 2 x 5 mL

3031 Dimethylarsinic Acid Standard Solution 2 x 5 mL

3033 Arsenobetaine Standard Solution 2 x 5 mL

3034 Arsenocholine Standard Solution   2 x 5 mL

3036 Arsenic Acid (AsV) Standard Solution 2 x 10 mL

3037 Arsenous Acid (AsIII) Standard Solution 2 x 10 mL

3655 Glycans in Solution (Frozen) 13 vials

3667 Creatinine in Frozen Human Urine 10 mL

3668 Mercury, Perchlorate, and Iodide 

in Frozen Human Urine

set (10)

3669 Arsenic Species in Frozen Human Urine 

(Elevated Levels)

5 x 1.5 mL

3671 Nicotine Metabolites in Human Urine 

(Frozen)

set (3)
Chemical Composition

Health & Industrial Hygiene

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21

SRM Description

Unit of 

Issue

3672 Organic Contaminants in Smokers' Urine 

(Frozen)

5 x 10 mL

3673 Organic Contaminants in Non-Smokers' Urine 

(Frozen)

5 x 10 mL

3949 Folate Vitamers in Frozen Human Serum set (3)

3950 Vitamin B6 in Frozen Human Serum set (2)

3951 Fatty Acid Species in Frozen Human Serum 3 x 1 mL

8321 Peptide Mixture of Proteomics 3 x 50 μL 

8323 Yeast Protein Extract 3 x 0.2 mL

8461 Human Liver for Proteomics 0.5 g

8642a FDA Saxitoxin Dihydrochloride Solution 5 x 1.2 mL

8671 NISTmAb, Humanized IgG1κ Monoclonal 

Antibody

1 x 800 μL

See Table 105.1 and Table 105.2 on the website for more information.

Toxic Substances in Urine 

(frozen form)

SRM Description

Unit of 

Issue

2668 Toxic Elements in Frozen Human Urine set (10) 

2669 Arsenic Species in Frozen Human Urine set (10)

3668 Mercury, Perchlorate, and Iodide 

in Frozen Human Urine

set (10) 

3669 Arsenic Species in Frozen Human 

Urine (Elevated Levels)

set (5)

See Table 105.4 on the website for more information.

Ethanol Solutions 

These SRMs are for use in the calibration of instruments 

and techniques for the determination of ethanol (ethyl 

alcohol) in breath and blood. SRM 1828c consists of six 

concentrations of ethanol-water solutions in ampoules.

SRM Description

Unit of 

Issue

1828c Ethanol-Water Solutions 

(Nominal Mass Fractions of 0.02 %, 0.04 %, 

0.08 %, 0.1 %, 0.2 %, and 0.3 %,)

6 x 1.2 mL

2891 Ethanol-Water Solution 

(Nominal Mass Fraction 0.02 %)

5 x 1.2 mL

2892 Ethanol-Water Solution 

(Nominal Mass Fraction 0.04 %)

5 x 1.2 mL

2893a Ethanol-Water Solution 

(Nominal Mass Fraction 0.08 %)

5 x 1.2 mL

2894 Ethanol-Water Solution 

(Nominal Mass Fraction 0.1 %)

5 x 1.2 mL

2895 Ethanol-Water Solution 

(Nominal Mass Fraction 0.2 %)

5 x 1.2 mL

2896 Ethanol-Water Solution 

(Nominal Mass Fraction 0.3 %)

5 x 1.2 mL

2897a Ethanol Water Solution 

(Nominal Mass Fraction 2 %)

5 x 10 mL

2898a Ethanol Water Solution 

(Nominal Mass Fraction 6 %)

5 x 10 mL

2899a Ethanol-Water Solution 

(Nominal Mass Fraction 25 %)

5 x 10 mL

2900 Ethanol-Water Solution 

(Nominal Mass Fraction 95.6 %)

5 x 10 mL

See Table 105.3 on the website for more information.
Drugs of Abuse, Smoking 

Metabolites and Contaminants 

(urine)

SRM Description

Unit of 

Issue

1507b 11-Nor-Delta-9-Tetrahydrocannabinol-9-

Carboxylic Acid in Freeze-Dried Urine

set (3)

2926 Recombinant Human Insulin-like Growth 

Factor 1 (Frozen)

3 x 0.25 mL

2927 15N-Labeled Recombinant Human Insulin-like 

Growth Factor 1 (Frozen)

3 x 50 μL

3671 Nicotine Metabolites in Human Urine 

(Frozen)

3 x 10 mL

3672 Organic Contaminants in Smokers' Urine 

(Frozen)

5 x 10 mL

3673 Organic Contaminants in Non-Smokers' 

Urine (Frozen)

5 x 10 mL

See Table 105.7 on the website for more information.

Biomaterials

(solid forms)

Biomaterials are found in medical devices that are in 

intimate contact with tissues and body fliuds.

SRM Description

Unit of 

Issue

2910b Hydroxyapatite 2 g

8012 Gold Nanoparticles, 

Nominal 30 nm Diameter

2 x 5 mL

8013 Gold Nanoparticles, 

Nominal 60 nm Diameter

2 x 5 mL

See Table 105.9 on the website for more information.

Respirable Materials on 

Filter Media 

These SRMs enable the determination of hazardous 

materials potentially found in industrial environments. 

SRMs 2676d, 2677a, and 3087a have been superseded by 

SRM 2783 Air Particulate on Filter Media. 

SRM Description

Unit of 

Issue

2783 Air Particulate on Filter Media 

(47 mm dia)

2 filters 

plus 2 

blanks

2950a Respirable Alpha Quartz on Filter Media 

(Nominal Mass of Alpha Quartz: 5 μg - 500 μg)

35 filters 

plus 35 

blanks

2960 Respirable Cristobalite on Filter Media 

(Nominal Mass of Cristobalite: 5 μg - 250 μg)

30 filters 

plus 30 

blanks

8785 Air Particulate Matter on Filter Media 3 filters

8786 Filter Blank for RM 8785 1 filter

See Table 105.10 on the website for more information.

Chemical Composition

Health & Industrial Hygiene 

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22
Chemical Composition

Biomanufacturing

SRM 3655 is intended primarily for use as a calibration 

standard for the measurement of enzymatically released 

N-linked glycans. Potential applications of SRM 3655 

include the benchmarking and comparability of analytical 

techniques, as a material for ensuring system suitability, 

and for analytical method validation. This material may 

also be used to value-assign in-house calibrators or control 

materials. SRM 3655 consists of thirteen (13) aqueous 

solutions of glycans commonly associated with monoclonal 

antibody therapeutics. Each solution contains a purified 

free-reducing glycan at a certfied mass fraction.

RM 8634 is intended primarily for use in validating the 

counting, sizing, and morphological analysis of liquidborne particles over an approximate size range of 1 μm 

to 30 μm. RM 8634 is a suspension of highly polydisperse 

particles of irregular morphology that closely mimic the 

optical properties of aggregated proteinaceous particles. 

Thus, it is useful in determining instrumental response for 

particle counters used in biomanufacturing applications.

RM 8671 is intended primarily for use in evaluating the 

performance of methods for determining physicochemical 

and biophysical attributes of monoclonal antibodies. It also 

provides a representative test molecule for development of 

novel technology for therapeutic protein characterization.

SRM Description

Unit of 

Issue

3655 Glycans in Solution (Frozen) 13 vials

8230 Saccharomyces cerevisiae NE095 Cells for Cell 

Counting and DNA-based Detection 

(freeze-dried)

16 vials 

(12 yeast, 

4 matrix)

8634 Ethylene Tetrafluoroethylene for

Particle Size Distribution and

Morphology

20 mL

8671 NISTmAb, Humanized IgG1κ

Monoclonal Antibody

1 x 800 μL

See Table 105.6 on the website for more information.

Vitamin D Metabolites for Clinical 

Laboratory Materials (serum, 

plasma, and calibration solutions)

SRM Description

Unit of 

Issue

968f Fat-Soluble Vitamins in Frozen Human Serum 2 x 1 mL

972a Vitamin D Metabolites in Frozen Human Serum 4 x 1 mL

1949 Frozen Human Prenatal Serum 8 vials

(2 each)

1950 Metabolites in Frozen Human Plasma 5 x 1 mL

2968 3-Epi-25-Hydroxvitamin D3 Calibration 

Solution

5 x 1.2 mL

2969 Vitamin D Metabolites in Frozen Human 

Serum (Total 25-Hydroxyvitamin D Low Level)

2 x 1 mL

2970 Vitamin D Metabolites in Frozen Human 

Serum (25-Hydroxyvitamin D2 High Level)

2 x 1 mL

2971 24R, 25-Dihydroxyvitamin D3 Calibration 

Solution

5 x 1 mL

2972b 25-Hydroxyvitamin D Calibration Solutions 20 x 1.2 mL

2973 Vitamin D Metabolites in Frozen Human Serum

(High Level)

2 x 1 mL

See Table 105.5 on the website for more information.

Health & Industrial Hygiene

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23
Chemical Composition

Health & Industrial Hygiene 

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24

Serum, Plasma, Blood and Urine 

Clinical Laboratory Materials 

(frozen, liquid, and lyophilized 

forms)

These SRMs are intended serve a variety of clinical 

measurement needs.

SRM Description

Unit of 

Issue

909c Frozen Human Serum 3 x 2 mL

927f Bovine Serum Albumin (7 %, solution)

(Total Protein Solution)

10 x 2.2 

mL

956d Electrolytes in Frozen Human Serum 6 x 2 mL

965b Glucose in Frozen Human Serum set (8)

967a Creatinine in Frozen Human Serum set (4)

968f Fat-Soluble Vitamins, Carotenoids, 

and Cholesterol in Human Serum

set (3)

971a Hormones in Frozen Human Serum 2 x 2 mL

972a Vitamin D Metabolites in 

Frozen Human Serum

4 x 1 mL

1401 Trace Metals in Frozen Human Blood 4 x 1.6 mL

1507b 11-Nor-Delta-9-Tetrahydrocannabinol-9-

CarboxylicAcid in Freeze-Dried Urine

set (3)

1949 Frozen Human Prenatal Serum 8 x 1.8 mL

1950 Metabolites in Human Plasma 5 x 1 mL

1951c Lipids in Frozen Human Serum 4 x 1 mL

1955 Homocysteine and Folate in 

Frozen Human Serum

set (3)

1957 Organic Contaminants in 

Non-Fortified Human Serum

5

SRM Description

Unit of 

Issue

1958 Organic Contaminants in 

Fortified Human Serum

5

2378 Fatty Acids in Frozen Human Serum 3 x 1 mL

2668 Toxic Elements in Frozen Human Urine 10 x 1.5 mL

2669 Arsenic Species in Frozen Human Urine 10 x 1.5 mL

2925 Recombinant Human Serum Albumin 

Solution (Primary Reference Calibrator 

for Urine Albumin) (Frozen)

2 x 0.5 mL

2969 Vitamin D Metabolites in Frozen Human 

Serum (Total 25-Hydroxyvitamin D Low Level)

2 x 1 mL

2970 Vitamin D Metabolites in Frozen Human 

Serum (25-Hydroxyvitamin D2 High Level)

2 x 1 mL

2973 Vitamin D Metabolites 

in Frozen Human Serum (High Level)

2 x 1 mL

3667 Creatinine in Frozen Human Urine 1 x 10 mL

3668 Mercury, Perchlorate, and Iodide 

in Frozen Human Urine

10 x 1.5 mL

3669 Arsenic Species in Frozen Human Urine 

(Elevated Levels)

10 x 1.5 mL

3671 Nicotine Metabolites in Human Urine (Frozen) 5 x 1.5 mL

3672 Organic Contaminants in Smoker’s 

Urine (Frozen)

10 x 1.5 mL

3673 Organic Contaminants in Non-Smoker’s’

Urine (Frozen)

10 x 1.5 mL

3949 Folate Vitamers in Frozen Human Serum 3 x 1 mL

3950 Vitamin B6 in Frozen Human Serum 2 x 1 mL

3951 Fatty Acid Species in Frozen Human Serum 3 x 1 mL

See Table 105.2 on the website for more information.
Chemical Composition

Health & Industrial Hygiene

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25

Respirable 

Materials

SRMs 1878b and 1879b are crystalline silica materials with 

particle size in the respirable range. They are intended 

for use in determining, by x-ray diffraction, the levels of 

respirable silica in an industrial atmosphere according 

to National Institute for Occupational Safety and Health 

(NIOSH) Analytical Method 7500 or equivalent methods.

SRM Description

Unit of 

Issue

1648a Urban Particulate Matter 2 g

1649b Urban Dust 2 g

1650b Diesel Particulate Matter 200 mg

1877 Beryllium Oxide Powder 20 g

1878b Respirable Alpha Quartz (Quantitative 

X-Ray Powder Diffraction Standard)

5 g

1879b Respirable Cristobalite (Quantitative 

X-Ray Powder Diffraction Standard) 

5 g

1975 Diesel Particulate Extract 4 x 1.2 mL

2583 Trace Elements in Indoor Dust (Nominal Mass 

Fraction of 90 mg/kg Lead)

8 g

2584 Trace Elements in Indoor Dust (Nominal Mass 

Fraction of 1% Lead)

8 g

2585 Organic Contaminants in House Dust 10 g

2786 Fine Atmospheric Particulate Matter

(Mean Particle Diameter < 4 μm)

100 mg

2787 Fine Atmospheric Particulate Matter

(Mean Particle Diameter < 10 μm)

100 mg

2975 Diesel Particulate Matter 1 g

8044 Common Commercial Asbestos: Chrysotile 2.6 g

See Table 105.12 on the website for more information.
Chemical Composition

Health & Industrial Hygiene 

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26

DNA Profiling, Nucleic Acid 

Materials, and Monoclonal Antibody 

Standard Reference Material (SRM) 2372a is intended 

primarily for use in the value assignment of human 

genomic deoxyribonucleic acid (DNA) forensic 

quantitation materials. SRM 2372a consists of three 

well-characterized human genomic DNA materials in 

pH 8.0 aqueous buffer. The components are derived 

from human buffy coat samples, and labeled A, B, 

and C. Component A consists of genomic DNA from a 

single male donor. Component B consists of genomic 

DNA from a single female donor. Component C 

consists of a gravimetric mixture of genomic DNA 

(1 part male donor to 3 parts female donor). 

SRM 2372a is certified for copy number and DNA 

concentration (ng/μL). A unit of the SRM consists of 

one sterile 0.5 mL vial of each component, each vial 

containing approximately 55 μL of DNA solution. 

Each of these vials is labeled and is sealed with a 

color-coded screw cap. 

SRM 2392 is intended to provide quality control 

when performing the polymerase chain reaction 

(PCR) and sequencing of human mitochondrial 

DNA (mtDNA) for forensic identifications, medical 

diagnosis, or mutation detection. It may also be 

used as a control when amplifying (PCR) and 

sequencing any DNA. SRM 2392 Mitochondrial DNA 

Sequencing contains DNA extracted from two cell 

lines plus cloned DNA from a region that is difficult 

to sequence. The certificate accompanying the SRM 

details the base pair sequences of the DNA, and the 

sequences of 58 unique primer sets which permit 

the amplification and sequencing of any specific area 

or the entire human mitochondrial DNA (strand). 

SRM 2392 consists of three frozen components 

packaged in one box. For further information see: 

SP260-155.

RMs 8366, 8375, 8391, 8392, 8393, and 8398 are

intended for assessing performance of human 

genome sequencing, including whole genome 

sequencing, whole exome sequencing, and 

more targeted sequencing such as gene panels.

Specifically, the material can be used to obtain 

estimates of true positives, false positives, true 

negatives, and false negatives for variant calls.
Chemical Composition

Health & Industrial Hygiene

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27

SRM Description

Unit of 

Issue

2365 BK Virus DNA Quantitative Standard 1 vial

2366a Cytomegalovirus DNA (TowneΔ147 BAC) 

for DNA Measurements

1 vial

2367 JC Virus DNA Quantitative Standard 1 x 110 μL

2372a Human DNA Quantitation Standard set (3)

2373 Genomic DNA Standards for 

HER2 Measurements

set (5)

2374 DNA Sequence Library for External 

RNA Controls

96 tubes

2391d PCR-Based DNA Profiling Standard 5 vials

2392 Mitochondrial DNA Sequencing set (3)

2393 CAG Repeat Length Mutation 

in Huntington’s Disease

set (6)

2396 Oxidative DNA Damage Mass 

Spectrometry Standards

set (10)

2917 Plasmid DNA for Fecal Indicator Detection 

and Identification

set (6)

8230 Saccharomyces cerevisiae NE095 Cells for Cell 

Counting and DNA-based Detection 

(freeze-dried)

16 vials 

(12 yeast, 

4 matrix)

8366 EGFR and MET Gene Copy Number Standards 

for Cancer Measurements

set (6)

8375 Microbial Genomic DNA Standards 

for Sequencing Performance Assessment 

(MG-001, MG-002, MG-003, MG-004)

set (4)

SRM Description

Unit of 

Issue

8376 Microbial Pathogen DNA Standards for 

Detection and Identification

20 tubes

8391 Human DNA for Whole-Genome 

Variant Assessment (Son of Eastern 

European Ashkenazi Jewish Ancestry) 

(HG-002)

1 vial

8391

(QTY 10)

Human DNA for Whole-Genome 

Variant Assessment (Son of Eastern 

European Ashkenazi Jewish Ancestry) 

(HG-002)

10 vials

of RM

8391

8392 Human DNA for Whole-Genome 

Variant Assessment (Trio of Eastern 

European Ashkenazi Jewish Ancestry) 

(HG-002, HG-003, HG-004)

3 vials

8393 Human DNA for Whole-Genome Variant 

Assessment (Son of Chinese Ancestry) 

(HG-005)

1 vial

8393 

(QTY 10)

Human DNA for Whole-Genome Variant 

Assessment (Son of Chinese Ancestry) 

(HG-005)

10 vials

of RM

8391

8398 Human DNA for Whole-Genome Variant 

Assessment (Daughter of Utah/European 

Ancestry) (HG-001)

1 vial

8398

(QTY 10)

Human DNA for Whole-Genome Variant 

Assessment (Daughter of Utah/European 

Ancestry) (HG-001)

10 vials

of RM

8398

See Table 105.8 on the website for more information.
Chemical Composition

Health & Industrial Hygiene 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

28

Lead in Paint, Dust, and Soil 

(powder and sheet forms) 

These SRMs and RM have been developed in conjunction 

with the U.S. EPA to monitor paint, soil, and dust sources 

of lead. SRMs 2570 through 2576 consist of one Mylar

sheet per unit. Each sheet, 7.6 cm x 10.2 cm, is coated with 

a single uniform paint layer for use with portable x-ray 

fluorescence analyzers. SRMs 2580, 2581, 2582, and 2589 

consist of paint that has been ground and homogenized 

into a powder, 99+% of which passes a 100 μm sieve. SRM 

2583 and SRM 2584 consist of dust, 99+% of which passes 

a 100 μm sieve, that was collected in vacuum cleaner 

bags during cleaning of dwelling interiors. SRM 2583 and 

SRM 2584 are certified for arsenic, chromium, cadmium, 

lead, and mercury. SRMs 2584, 2586, and 2587 are

dust or soil matrices containing lead from paint.

SRM Description

Unit of 

Issue

1648a Urban Particulate Matter 2 g

2569 Lead Paint Films for Children’s Products 8 sheets

2570 Lead Paint Film for Portable X-Ray 

Fluorescence Analyzers - Blank 

(Color: White)

1 film

2571 Lead Paint Film for Building Surfaces

(Nominal Pb 3.5 mg/cm2)(Color: Yellow)

1 + blank

2572 Lead Paint Film for Building Surfaces

(Nominal Pb 1.6 mg/cm2)(Color: Orange)

1 + blank

2573 Lead Paint Film for Building Surfaces

(Nominal Pb 1.0 mg/cm2)(Color: Red)

1 + blank

SRM Description

Unit of 

Issue

2574 Lead Paint Film for Building Surfaces

(Nominal Pb 0.7 mg/cm2)(Color: Gold)

1 + blank

2575 Lead Paint Film for Building Surfaces

(Nominal Pb 0.3 mg/cm2)(Color: Green)

1 + blank

2576 Lead Paint Film for Building Surfaces

(Nominal Pb 5.6 mg/cm2)(Color: Blue)

1 + blank

2579a Lead Paint Films For Building Surfaces 

(SRM 2570 through SRM 2575)

set (6)

2580 Powdered Paint (Nominal Mass 

Fraction 4 % Lead)

30 g

2581 Powdered Paint (Nominal Mass 

Fraction 0.5 % Lead)

35 g

2582 Powdered Paint (Nominal Mass Fraction 200 

mg/kg Lead)

20 g

2583 Trace Elements in Indoor Dust (Nominal Mass 

Fraction of 90 mg/kg Lead)

8 g

2584 Trace Elements in Indoor Dust (Nominal Mass 

Fraction of 1% Lead)

8 g

2586 Trace Elements in Soil Containing Lead 

From Paint (Nominal Mass Fraction 500 mg/

kg Lead)

55 g

2587 Trace Elements in Soil (Nominal Mass Fraction 

of 3000 mg/kg Lead)

55 g

2589 Powdered Paint (Nominal Mass 

Fraction 10% Lead)

35 g

2783 Air Particulate on Filter Media

(47 mm dia)

2 + 2 Blank

See Table 105.13 on the website for more information.
Standard Reference Materials

for Chemical Composition

Ferrous Metals

Chemical Composition

Health & Industrial Hygiene

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Standard Reference Materials

for Chemical Composition

Inorganics

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29
Chemical Composition

Inorganics 

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30

Metal (Inorganics) Constituents 

in Natural Matrices 

(liquid and solid forms)

These SRMs and RM are for analysis of materials of health or 

environmental interest. 

SRM Description

Unit of 

Issue

1640a Trace Elements in Natural Water 250 mL

1641e Mercury in Water 10 x 10 mL

1643f Trace Elements in Water 250 mL

1646a Estuarine Sediment 70 g

1648a Urban Particulate Matter 2 g

1944 New York/New Jersey Waterway Sediment 50 g

1946 Lake Superior Fish Tissue 5 x 8 g

1947 Lake Michigan Fish Tissue 5 x 8 g

2385 Slurried Spinach 4 x 70 g

2387 Peanut Butter 3 x 170 g

2451 Fine Carbon (Activated)

From Cyanide Ore Leaching

100 g

2583 Trace Elements in Indoor Dust (Nominal Mass 

Fraction of 90 mg/kg Lead)

8 g

2584 Trace Elements in Indoor Dust (Nominal Mass 

Fraction of 1 % Lead)

8 g

2586 Trace Elements in Soil Containing Lead 

From Paint (Nominal Mass Fraction 

500 mg/kg Lead)

55 g

2587 Trace Elements in Soil (Nominal Mass Fraction 

of 3000 mg/kg Lead)

55 g

2696 Silica Fume (powder form) 70 g

2700 Hexavalent Chromium in 

Contaminated Soil (Low Level)

75 g

2701 Hexavalent Chromium 

in Contaminated Soil (High Level)

75 g

2702 Inorganics in Marine Sediment 50 g

2703 Sediment for Solid Sampling 

(Small Sample) Analytical Techniques

5 g

2706 New Jersey Soil, Organics 

and Trace Elements

50 g

2709a San Joaquin Soil Baseline Trace Element 

Concentrations

50 g

2710a Montana I Soil Highly Elevated Trace Element 

Concentrations

50 g

2711a Montana II Soil Moderately Elevated Trace 

Element Concentrations

50 g

2780a Hard Rock Mine Waste 50 g

2781 Domestic Sludge 40 g

SRM Description

Unit of 

Issue

2782 Industrial Sludge 70 g

2783 Air Particulate on Filter Media

(47 mm dia)

2 + 2 Blank 

2976 Trace Elements and Methylmercury in Mussel 

Tissue (Freeze-Dried)

25 g

8610 Mercury Isotopes in UM-Almaden 

Mono-Elemental Secondary Standard

4 x 5 mL

8704 Buffalo River Sediment 50 g

8785 Air Particulate Matter on Filter Media 3 filters

8786 Filter Blank for RM 8785 filter

See Table 106.1 on the website for more information.

Mercury in 

Activated Carbon

These SRMs are intended for use in the evaluation of 

chemical methods of analysis for mercury.

SRM Description

Unit of 

Issue

2445 Mercury in Iodinated Activated Carbon 25 g

2448 Mercury in Brominated Activated Carbon 25 g

2451 Fine Carbon (Activated) - From Cyanide 

Ore Leaching

100 g

See Table 106.3 on the website for more information.
Chemical Composition

Inorganics

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31

Environmental Matrices 

with Carbon Values

These materials are intended for use in evaluating analytical 

methods used to measure carbon.

SRM Description

Unit of 

Issue

1632e Trace Elements in Coal (Bituminous) 50 g

1944 New York/New Jersey Waterway Sediment 50 g

2718a Green Petroleum Coke 50 g

2719 Calcined Petroleum Coke 50 g

2775 Sulfur in Foundry Coke 50 g

2776 Sulfur in Furnace Coke 50 g

8499 Trace Elements in Coal (Bituminous) 50 g

8704 Buffalo River Sediment 50 g

8785 Air Particulate Matter on Filter Media 3 filters

8786 Filter Blank for RM 8785 filter

See Table 106.4 on the website for more information.

Used Auto Catalysts 

(powder form)

These SRMs are intended for use in the evaluation of 

methods for the analysis of the platinum group metals and 

lead in auto catalysts. They were produced in cooperation 

with the International Precious Metals Institute and are 

issued as fine (74 μm, 200 mesh) powders.

SRM Description

Unit of 

Issue

2556 Used Auto Catalyst (Pellets) 70 g

2557 Used Auto Catalyst (Monolith) 70 g

See Table 106.6 on the website for more information.

Zeolites 

(powder form)

These RMs are intended to provide a common source of 

zeolite materials for measurement comparisons. Additional 

reference and information values are provided for atomic 

ratios of Si to Al and Na to Al, trace element content, 

enthalpy of formation, unit cell parameters, and particle 

size distributions. Figures are provided showing spectra for 

NMR analyses, plots of particle size distribution, electron 

microscope images of particles and plots of variation in 

sample mass with change in ambient humidity.

SRM Description

Unit of 

Issue

8850 Zeolite Y 35-40 g

8851 Zeolite A 35-40 g

8852 Ammonium ZSM-5 Zeolite 35-40 g

See Table 106.7 on the website for more information.
Chemical Composition

Inorganics 

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32 

32

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Chemical Composition

Inorganics

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Chemical Composition

Health & Industrial Hygiene

Standard Reference Materials

for Chemical Composition

 Primary Gas Mixtures

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

33
Chemical Composition

Primary Gas Mixtures 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

34

Primary Gas Mixtures 

These SRMs are for calibrating equipment and apparatus 

used to measure various components of gas mixtures and 

atmospheric pollutants. The typical gas mixture is supplied 

in a DOT 3AL specification aluminum (6061 alloy) cylinder 

with a nominal pressure exceeding 12.4 mPa that provides 

the user with approximately 0.73 m3 of usable mixture. 

Due to increasing customer demand, these primary 

gas mixtures are in short supply and may not be readily 

available for sale. In such cases, a NIST traceable reference 

gas described below may be substituted. 

A NIST Traceable Reference Material (NTRM) is a reference 

material produced by a commercial supplier with a 

well-defined traceability to NIST measurement results. 

This traceability is established via criteria and protocols 

defined by NIST that are tailored to meet the needs of the 

metrological community to be served. The NTRM concept 

was established to allow NIST to respond to the increasing 

needs for high quality reference materials by leveraging 

its relatively fixed human and financial resources with 

secondary reference material producers. Reference material 

producers adhering to NIST defined protocol requirements 

are allowed to use the NTRM trademark to identify their 

product. 

The gas NTRM program was established in 1992 in 

partnership with the U.S. EPA and specialty gas companies 

as a means for providing end-users with the wide variety of 

certified gas standards needed to implement the Emissions 

Trading provision of the 1990 Clean Air Act. Gas NTRMs 

are produced and distributed by specialty gas companies 

with NIST oversight of the production and maintenance, 

and direct involvement in the analysis. NTRMs can be 

developed for any pollutant, concentration, and balance 

gas combination for which a NIST primary standard or 

SRM exists. The gas standards prepared according to this 

program are related, within known limits of uncertainty, 

to specific gaseous primary standards maintained by NIST.

Carbon Monoxide in Air or Nitrogen

SRM Description

Unit of 

Issue

1677c* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 10 μmol/mol)

6 L 

cylinder

1678c* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 50 μmol/mol)

6 L 

cylinder

1679c* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 100 μmol/mol)

6 L 

cylinder

1680b* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 500 μmol/mol)

6 L 

cylinder

1681b* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1000 μmol/mol)

6 L 

cylinder

2613a* Carbon Monoxide in Air (Nominal

Amount-of-Substance Fraction 20

μmol/mol)

6 L 

cylinder

2635a* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 25 μmol/mol)

6 L 

cylinder

2636a* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 250 μmol/mol)

6 L 

cylinder

2637a* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 2500 μmol/mol)

6 L 

cylinder

2638a* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 5000 μmol/mol)

6 L 

cylinder

2639a Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1 % mol/mol)

6 L 

cylinder

2640a Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 2 % mol/mol)

6 L 

cylinder

2641a Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 4 % mol/mol)

6 L 

cylinder

2642a* Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 8 % mol/mol)

6 L 

cylinder

2740a Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 10 % mol/mol)

6 L 

cylinder

2741a Carbon Monoxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 13 % mol/mol)

6 L 

cylinder

* The SRMs that are marked with * are also available as NTRMs from 

commercial suppliers.

See Table 107.1 on the website for more information.
Chemical Composition

Primary Gas Mixtures

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

35

Carbon Dioxide in Nitrogen

SRM Description

Unit of 

Issue

1674b* Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 7 % mol/mol)

6 L 

cylinder

2617 Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 500 μmol/mol)

6 L 

cylinder

2619a Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 0.5 % mol/mol)

6 L 

cylinder

2620a Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1 % mol/mol)

6 L 

cylinder

2621a Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1.5 % mol/mol)

6 L 

cylinder

2622a Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 2 % mol/mol)

6 L 

cylinder

2624a Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 3 % mol/mol)

6 L 

cylinder

2625a* Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 3.5 % mol/mol)

6 L 

cylinder

2745* Carbon Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 16 % mol/mol)

6 L 

cylinder

* The SRMs that are marked with * are also available as NTRMs from 

commercial suppliers.

See Table 107.2 on the website for more information.

Continental and Oceanic Air

SRM Description

Unit of 

Issue

1720 Northern Continental Air 30 L 

cylinder

1721 Southern Oceanic Air 30 L 

cylinder

1722 Halocarbons in Continental Air (Nominal 

Amount-of-Substance Fraction - Ambient)

29.5 L 

cylinder

See Table 107.3 on the website for more information.

Hydrogen Sulfide in Nitrogen

SRM Description

Unit of 

Issue

2730 Hydrogen Sulfide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 5 μmol/mol)

6 L 

cylinder

2731 Hydrogen Sulfide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 20 μmol/mol)

6 L 

cylinder

See Table 107.4 on the website for more information.
Chemical Composition

Primary Gas Mixtures 

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36

Organic Components in Air 

or Nitrogen

SRM Description

Unit of 

Issue

1658a Methane in Air (Nominal Amount-ofSubstance Fraction 1 μmol/mol)6 L 

cylinder

1659a Methane in Air (Nominal Amount-ofSubstance Fraction 10 μmol/mol)6 L 

cylinder

1665b Propane in Air (Nominal Amount-ofSubstance Fraction 3 μmol/mol)6 L 

cylinder

1666b Propane in Air (Nominal Amount-ofSubstance Fraction 10 μmol/mol)6 L 

cylinder

1667b Propane in Air (Nominal Amount-ofSubstance Fraction 50 μmol/mol)6 L 

cylinder

1668b* Propane in Air (Nominal Amount-ofSubstance Fraction 100 μmol/mol)6 L 

cylinder

1669b Propane in Air (Nominal Amount-ofSubstance Fraction 500 μmol/mol)6 L 

cylinder

2644a Propane in Nitrogen (Nominal Amount-ofSubstance Fraction 250 μmol/mol)6 L 

cylinder

2647a Propane in Nitrogen (Nominal Amount-ofSubstance Fraction 2500 μmol/mol)6 L 

cylinder

2750 Methane in Air (Nominal Amount-ofSubstance Fraction 50 μmol/mol)6 L 

cylinder

2751 Methane in Air (Nominal Amount-ofSubstance Fraction 100 μmol/mol)6 L 

cylinder

2764 Propane in Air (Nominal Amount-ofSubstance Fraction 0.25 μmol/mol)6 L 

cylinder

2765 Propane in Air (Nominal Amount-ofSubstance Fraction 100 nmol/mol)6 L 

cylinder

See Table 107.5 on the website for more information.

Nitrogen Oxides in Air or Nitrogen

SRM Description

Unit of 

Issue

1683b* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 50 μmol/mol)

6 L 

cylinder

1684b* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 100 μmol/mol)

6 L 

cylinder

1685b* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 250 μmol/mol)

6 L 

cylinder

1686b* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 500 μmol/mol)

6 L 

cylinder

1687b* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1000 μmol/mol)

6 L 

cylinder

1718 Nitrous Oxide in Air 

(Nominal Amount-of-Substance 

Fraction 1 μmol/mol)

6 L 

cylinder

2627a* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 5 μmol/mol)

6 L 

cylinder

2628a* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 10 μmol/mol)

6 L 

cylinder

2629a* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 20 μmol/mol)

6 L 

cylinder

2630* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1500 μmol/mol)

6 L 

cylinder

2631a* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 3000 μmol/mol)

6 L 

cylinder

2660a* Total Oxides of Nitrogen (NOx) in Air 

(Nominal Amount-of-Substance 

Fraction 100 μmol/mol)

6 L 

cylinder

2735 Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 800 μmol/mol)

6 L 

cylinder

2737* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 500 nmol/mol)

30 L 

cylinder

2738* Nitric Oxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1000 nmol/mol)

30 L 

cylinder

* The SRMs that are marked with * are also available as NTRMs from 

commercial suppliers.

See Table 107.6 on the website for more information.
Chemical Composition

Primary Gas Mixtures

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37

Oxygen in Nitrogen

SRM Description

Unit of 

Issue

2657a* Oxygen in Nitrogen (Nominal Amount-ofSubstance Fraction 2 % mol/mol)6 L 

cylinder

2658a* Oxygen in Nitrogen (Nominal Amount-ofSubstance Fraction 10 % mol/mol)6 L 

cylinder

2659a* Oxygen in Nitrogen (Nominal Amount-ofSubstance Fraction 21 % mol/mol)6 L 

cylinder

* The SRMs that are marked with * are also available as NTRMs from 

commercial suppliers. 

See Table 107.7 on the website for more information.

Sulfur Dioxide in Nitrogen

SRM Description

Unit of 

Issue

1661a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 500 μmol/mol)

6 L 

cylinder

1662a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1000 μmol/mol)

6 L 

cylinder

1663a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 1500 μmol/mol)

6 L 

cylinder

1664a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 2500 μmol/mol)

6 L 

cylinder

1689 Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 5 μmol/mol)

6 L 

cylinder

1693a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 50 μmol/mol)

6 L 

cylinder

1694a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 100 μmol/mol)

6 L 

cylinder

1696a* Sulfur Dioxide in Nitrogen 

(Nominal Amount-of-Substance 

Fraction 3500 μmol/mol)

6 L 

cylinder

* The SRMs that are marked with * are also available as NTRMs from 

commercial suppliers.

See Table 107.8 on the website for more information.
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38

Please Register Your SRM Online!

Registering will ensure that you will be notified of 

any technical updates or developments.

https://www.nist.gov/srm_reg
Chemical Composition

Health & Industrial Hygiene

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Standard Reference Materials

for Chemical Composition

 Fossil & Alternative Fuels

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39
Chemical Composition

Fossil & Alternative Fuels 

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40

Metal Constituents in Fossil Fuels 

(liquid forms) 

These materials are intended for analysis of metal trace 

elements in fuel oil and reference fuels. [Also see Category 

114.] SRM 1634c is a “No. 6” fuel oil in terms of viscosity but 

has a flash point of 43 °C.

SRM Description

Unit of 

Issue

1634c Trace Elements in Fuel Oil 100 mL

8505 Vanadium in Crude Oil 250 mL

See Table 108.2 on the website for more information.

Crude Oil

SRM Description

Unit of 

Issue

2721 Crude Oil (Light-Sour) 5 x 10 mL

2722 Crude Oil (Heavy Sweet) 5 x 10 mL

2778 Mercury in Crude Oil 5 x 10 mL

See Table 108.3(1) on the website for more information.

Bituminous Coal

SRM Description

Unit of 

Issue

1632e Trace Elements in Coal

(Bituminous)

100 mL

2683c Bituminous Coal 

(Nominal Mass Fraction 2 % Sulfur) 

50 g

2684c Bituminous Coal 

(Nominal Mass Fraction 3 % Sulfur)

50 g

2685c Bituminous Coal 

(Nominal Mass Fraction 5 % Sulfur)

50 g

2692c Bituminous Coal 

(Nominal Mass Fraction 1 % Sulfur)

50 g

2693 Bituminous Coal 

(Nominal Mass Fraction 0.5 % Sulfur)

50 g

8499 Trace Elements in Coal (Bituminous) 5 x 20 mL

2720 Sulfur in Di-n-Butyl Sulfide 5 x 4.5 mL

2771 Sulfur in Diesel Fuel Blend Stock 100 mL

See Table 108.3(9) on the website for more infomration and additional 

resources.

Gasoline

SRM Description

Unit of 

Issue

2298 Sulfur in Gasoline (High-Octane) 5 x 20 mL

2299 Sulfur in Gasoline (Reformulated) 5 x 20 mL

See Table 108.3(2) on the website for more information.

Subbituminous Coal

SRM Description

Unit of 

Issue

1635a Trace Elements in Coal (Subbitumimous) 50 g

2682c Subbituminous Coal 

(Nominal Mass Fraction 0.5 % Sulfur)

50 g

See Table 108.3(8) on the website for more information.
Chemical Composition

Fossil & Alternative Fuels

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41

Residual Fuel Oil

SRM Description

Unit of 

Issue

1619b Sulfur in Residual Fuel Oil 

(Nominal Mass Fraction 0.7 %)

100 mL

1622e Sulfur in Residual Fuel Oil 

(Nominal Mass Fraction 2 %)

100 mL

1623d Sulfur in Residual Fuel Oil 

(Nominal Mass Fraction 0.2 %)

100 mL

2717a Sulfur in Residual Fuel Oil 

(Nominal Mass Fraction 3 %)

100 mL

See Table 108.3(6) on the website for more information.

Petroleum Coke

SRM Description

Unit of 

Issue

2718a Green Petroleum Coke 50 g

2719 Calcined Petroleum Coke 50 g

See Table 108.3(7) on the website for more information.

Metallurgical Coke

SRM Description

Unit of 

Issue

2775 Sulfur in Foundry Coke 50 g

2776 Sulfur in Furnace Coke 50 g

See Table 108.3(10) on the website for more information.

Middle Distillates

SRM Description

Unit of 

Issue

1616b Sulfur in Kerosene (Low Level) 100 mL

1617b Sulfur in Kerosine (High Level) 100 mL

1624d Sulfur in Diesel Fuel Oil 

(Nominal Mass Fraction 0.4 %)

5 x 10 mL

2723b Sulfur in Diesel Fuel Oil 

(Nominal Mass Fraction 10 mg/kg)

100 mL

2770 Sulfur in Diesel Fuel Oil 

(Nominal Mass Fraction 40 mg/kg)

10 x 10 mL

See Table 108.3(3) on the website for more information.
Chemical Composition

Fossil & Alternative Fuels 

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42

Moisture in Oils and Alcohols 

(liquid form)

SRM 2890 Water Saturated 1-Octanol is certified for water 

content and is intended for use in calibrating instruments, 

and validating the accuracy of analytical methods. Water 

concentration values for RMs 8506a and 8509 are not 

certified but represent the “best estimate” of the moisture 

content determined by NIST and are intended for use in 

developing, and validating methods for the determination 

of moisture in oil and similar matrices. 

SRM Description

Unit of 

Issue

2721 Crude Oil (Light-Sour) 5 x 10 mL

2722 Crude Oil (Heavy-Sweet) 5 x 10 mL

2890 Water Saturated 1-Octanol 5 x 2 mL

8506a Moisture in Transformer Oil 5 x 9.5 mL

8509 Moisture in Methanol 5 x 5 mL

See Table 108.4 on the website for more information.

Fossil Fuel: Trace Elements 

(solid forms)

SRM Description

Unit of 

Issue

1632e Trace Elements in Coal (Bituminous) 50 g

1633c Trace Elements in Coal Fly Ash 75 g

1635a Trace Elements in Coal (Subbitumimous) 50 g

2429 Flue Gas Desulfurization Gypsum 200 g

2689 Coal Fly Ash 3 x 10 g

2690 Coal Fly Ash 3 x 10 g

2691 Coal Fly Ash 3 x 10 g

2718a Green Petroleum Coke 50 g

2719 Calcined Petroleum Coke 50 g

8499 Trace Elements in Coal (Bituminous) 50 g

See Table 108.6 on the website for more information.

Biomass Constituents 

SRM Description

Unit of 

Issue

2790 Inorganic Constituents in Hardwood 

Biomass Material

2 x 30 g

2791 Inorganic Constituents in Softwood 

Biomass Material

2 x 30 g

8496 Eucalyptus Hardwood 10 sheets

8644 Dried Corn Biomass Intermediate Before 

Conversion

4 x 10 g

8645 Dried Corn Biomass Intermediate After 

Conversion

2 x 10 g

See Table 108.9 on the website for more information.

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42

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Chemical Composition

Health & Industrial Hygiene

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Standard Reference Materials

for Chemical Composition

Organics

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43
Chemical Composition

Organics 

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44

Organics 

SRM Description

Unit of 

Issue

869b Column Selectivity Test Mixture 

for Liquid Chromatography

5 x 1.1 mL

870 Column Performance Test Mixture 

for Liquid Chromatography

5 x 1.1 mL

1491a Methyl-Substituted Polycyclic Aromatic 

Hydrocarbons in Toluene

5 x 1.2 mL

1493 Polychlorinated Biphenyl Congeners 

in 2,2,4-Trimethylpentane

5 x 1.2 mL

1494 Aliphatic Hydrocarbons 

in 2,2,4-Trimethylpentane

5 x 1.2 mL

1543 GC/MS System Performance Standard 4 x 1 mL

1588c Organics in Fish Oil 5 x 1.2 mL

1647f Priority Pollutant Polycyclic Aromatic 

Hydrocarbons in Acetonitrile

5 x 1.3 mL

1649b Urban Dust 2 g

1650b Diesel Particulate Matter 200 mg

1936 Great Lakes Sediment 50 g

1941b Organics in Marine Sediment 50 g

1944 New York/New Jersey Waterway Sediment 50 g

1945 Organics in Whale Blubber 2 x 15 g

1946 Lake Superior Fish Tissue 5 x 7-9 g

1947 Lake Michigan Fish Tissue 5 x 8 g

1953 Organic Contaminants in 

Non-Fortified Human Milk

5 x 5 mL

1954 Organic Contaminants in 

Fortified Human Milk

5 x 5 mL

1957 Organic Contaminants in 

Non-Fortified Human Serum (Freeze Dried)

5 x 10.7 mL

1958 Organic Contaminants in 

Fortified Human Serum (Freeze Dried)

5 x 10.7 mL

1974c Organics in Mussel Tissue 

(Mytilus edulis)

5 x 10 g

1975 Diesel Particulate Extract 4 x 1.2 mL

1991 Mix Coal Tar/Petroleum Extract 

in Methylene Chloride

5 x 1.2 mL

2257 PBDE Congeners in 2,2,4-Trimethylpentane 5 x 1.2 mL

2258 BDE 209 in 2,2,4-Trimethylpentane 5 x 1.2 mL

2259 PCB Congeners in 2,2,4-Trimethylpentane 5 x 1.2 mL

2260a Aromatic Hydrocarbon in Toluene 5 x 1.2 mL

2261 Chlorinated Pesticides in Hexane (Nominal 

Mass Concentration 2 μg/mL)

5 x 1.2 mL

2262 Chlorinated Biphenyl Congeners 

in 2,2,4-Trimethylpentane (Nominal Mass 

Concentration 2 μg/mL)

5 x 1.2 mL

SRM Description

Unit of 

Issue

2266 Hopanes and Steranes in 

2,2,4 Trimethylpentane

5 x 1.2 mL

2269 Perdeuterated PAH-I Solution 

in Hexane/Toluene

5 x 1.2 mL

2270 Perdeuterated PAH-II Solution 

in Hexane/Toluene

5 x 1.2 mL

2274 PCB Congeners in 2,2,4-Trimethylpentane 5 x 1.2 mL

2275 Chlorinated Pesticide Solution-II 

in 2,2,4-Trimethylpentane

5 x 1.2 mL

2585 Organic Contaminants in House Dust 10 g

2706 New Jersey Soil, Organics and Trace Elements 50 g

2777 Weathered Gulf of Mexico Crude Oil 

in Toluene

5 x 1.2 mL

2779 Gulf of Mexico Crude Oil 5 x 1.2 mL

2781 Domestic Sludge 40 g

2786 Fine Atmospheric Particulate Matter (<4 μm) 100 mg to 

140 mg

2787 Fine Atmospheric Particulate Matter 

(<10 μm)

100 mg to 

140 mg

2860 Phthalates in Polyvinyl Chloride 2 levels,

1 blank, 

2 g each

2974a Organics in Freeze-Dried Mussel Tissue 

(Mytilus edulis)

5 g

2975 Diesel Particulate Matter 1 g

3060 Monoester Phthalates in Acetonitrile 5 x 1.2 mL

3262 St. John’s Wort (Hypericum perforatum L.) 

Aerial Parts

5 x 3.3 g

3672 Organic Contaminants 

in Smokers’ Urine (Frozen)

5 x 10 mL

3673 Organic Contaminants 

in Non-Smokers’ Urine (Frozen)

5 x 10 mL

8182 Fatty Acid Methyl Esters in 

2,2,4-Trimethylpentane

5 x 1.2 mL

8446 Perfluorinated Carboxylic Acids and 

Perfluorooctane Sulfonamide in Methanol

4 x 1.2 mL

8447 Perfluorinated Sulfonic Acids in Methanol 3 x 1.2 mL

See Table 109.1 on the website for more information.
Chemical Composition

Organics

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45

EPA: Organic Compounds

These SRMs are intended primarily for the calibration of 

instrumentation and validation of methods for volatile 

or semi-volatile organic compound determinations. 

Because of its miscibility with water, each SRM can also 

be used to fortify aqueous samples with known amounts 

of the organic compound. These SRMs were developed 

primarily to support the Chemical Calibration Providers of 

the Proficiency Testing Program with support by the U.S. 

Environmental Protection Agency (EPA).

SRM Description

Unit of 

Issue

3074 Phthalates in Methanol 5 x 1.2 mL

3077 Aroclor 1242 in Transformer Oil 5 x 1.2 mL

3079 Aroclor 1254 in Transformer Oil 5 x 1.2 mL

3080 Aroclor 1260 in Transformer Oil 5 x 1.2 mL

See Table 109.3 on the website for more information.

Perfluorinated and Polyfluorinated 

Alkyl Substances (PFAS)

SRM Description

Unit of 

Issue

1936 Great Lakes Sediment 50 g

1946 Lake Superior Fish Tissue 5 x 7-9 g

1947 Lake Michigan Fish Tissue 5 x 8 g

1950 Metabolites in Frozen Human Plasma 5 x 1 mL

1957 Organic Contaminants in Non-Fortified 

Human Serum (Freeze-Dried)

5 x 10.7 mL

1958 Organic Contaminants in Fortified 

Human Serum (Freeze-Dried)

5 x 10.7 mL

2585 Organic Contaminants in House Dust 10 g

2586 Trace Elements in Soil Containing 

Lead From Paint (Nominal Mass 

Fraction of 500 mg/kg Lead)

55 g

2781 Domestic Sludge 40 g

8446 Perfluorinated Carboxylic Acids and 

Perfluorooctane Sulfonamide in Methanol

4 x 1.2 mL

8447 Perfluorinated Sulfonic Acids in Methanol 3 x 1.2 mL

See Table 109.5 on the website for more information.

Crime Scene Investigations

SRM Description

Unit of 

Issue

2460a Standard Bullet Replica each

2461 Standard Cartridge Case each

See Table 109.4 on the website for more information.
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46 46

Four reference materials from NIST will help the U.S. 

Food and Drug Administration and Customs and Border 

Protection agencies assess whether imported salmon 

and shrimp are authentic. Food fraud, the intentional 

misrepresentation of a less expensive material for a more 

expensive one, is estimated to affect about 1% of the food 

industry worldwide and cost as much as $40 billion a year.

Salmon and shrimp are two of the three most-consumed 

seafoods in the U.S. (tuna is the third), and seafood is one of 

the most highly traded international commodities. Farmed, 

or aquacultured, salmon and shrimp are less expensive to 

produce, compared to salmon and shrimp netted in the 

wild from boats. Aquaculture facilities are either on shore 

or close to shore, so the catches require less fuel and lower 

labor costs. A producer who substitutes farmed seafood for 

wild-caught seafood can earn higher profits, if fraudulently. 

NIST developed two reference materials for each to help 

regulators and law enforcement agencies differentiate 

between farmed and wild-caught salmon and shrimp.

Genetic analysis can be used to determine the origin of 

shrimp, as wild-caught shrimp represent a different species 

than aquacultured shrimp. A definitive identification of 

salmon, however, requires an analysis of the ratios of Omega 

3 to Omega 6 fatty acids in their flesh, which vary likely 

because of the different diets eaten by aquacultured and 

wild salmon. Aquacultured salmon has twice the amount of 

Omega 3 fatty acids, according to the NIST analysis. This can 

be used as a tell-tale marker for federal and other agencies 

testing the authenticity of salmon.

NIST provides values for fatty acids for all four reference 

materials so that they can also be used to assure the quality 

of measurements of nutrition. Values for crude protein are 

also provided for labs that wish to use these materials to 

assure the quality of tests to detect allergens.

NIST carefully sourced the shrimp and salmon for all four 

reference materials to be confident that they are as claimed. 

The National Oceanic and Atmospheric Administration 

Northwest Fisheries Science Center Forensic Laboratory 

provided expertise in identifying verified fisheries and 

facilities capable of providing authentic seafood products. 

Genetic analysis was conducted on all four materials to 

assist in verifying their source. In addition, because the final 

reference materials are intended to represent food items, 

only those portions of the shrimp and salmon typically 

consumed were included in the production of these 

reference materials.

A unit of each of these reference materials includes two 

glass jars, each containing approximately 6 g to 8 g (wet 

basis) of frozen tissue homogenate that has been stored at 

−80 °C or lower since preparation.

Learn more:

Ellisor DL, Place B, Phillips M, Yen J (2021) Analysis of Seafood 

Reference Materials: RM 8256, RM 8257, RM 8258, and RM 

8259, Wild-Caught Coho Salmon (RM 8256), Aquacultured 

Coho Salmon (RM 8257), Wild-Caught Shrimp (RM 8258), 

Aquacultured Shrimp (RM 8259). (National Institute of 

Standards and Technology, Gaithersburg, MD)

NIST Special Publication (SP) 260-214

https://doi.org/10.6028/NIST.SP.260-214.

Wild-Caught Coho Salmon (RM 8256), 

Aquacultured Coho Salmon (RM 8257), 

Wild-Caught Shrimp (RM 8258), 

Aquacultured Shrimp (RM 8259)
Chemical Composition

Organics

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Chemical Composition

Food & Agriculture

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47
Chemical Composition

Food & Agriculture 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

48

Foods and Beverages - Macro 

and Micronutrients

These SRMs are for validation of analytical procedures 

and calibration of apparatus used in the analysis of trace 

elements and other analytes in foods and related products. 

SRM Description

Unit of 

Issue

1546a Meat Homogenate 4 cans 

x 85 g

1548b Typical Diet 2 x 5 g

1549a Whole Milk Powder 5 pouches 

x 10 g each

1566b Oyster Tissue 25 g

1567b Wheat Flour 50 g

1568b Rice Flour 50 g

1570a Trace Elements in Spinach Leaves 60 g

1577c Bovine Liver 20 g

1845a Whole Egg Powder 5 pouches 

x 10 g each

1849a Infant/Adult Nutritional Formula I 

(milk-based)

10 pouches 

x 10 g each

1869 Infant/Adult Nutritional Formula II 

(milk/whey/soy-based)

10 pouches 

x 10 g each

1946 Lake Superior Fish Tissue 5 x 7-9 

grams

1947 Lake Michigan Fish Tissue 5 x 8 grams

2383a Baby Food Composite 4 x 70 g

2384 Baking Chocolate 5 x 91 g

2385 Slurried Spinach 4 x 70 g

2386 Avocado Powder 5 x 10 g

SRM Description

Unit of 

Issue

2387 Peanut Butter 3 x 170 g

3035 Arsenic Species in Apple Juice 5 x 1.5 mL

3233 Fortified Breakfast Cereal 60 g each

3234 Soy Flour 50 g

3235 Soy Milk 10 x 10 mL

3252 Protein Drink Mix 5 pouches 

x 10 g each

3253 Yerba Mate Leaves 2 x 10 g

3254 Green Tea (Camellia sinensis) Leaves 5 x 3 g

3255 Green Tea (Camellia sinensis) Extract 5 x 1 g

3281 Cranberry (Fruit) 5 x 6 g

3282 Low-Calorie Cranberry Juice Cocktail 5 x 1.2 mL

3287 Blueberry (Fruit) 5 pouches 

x 5 g each

3290 Dry Cat Food 5 pouches 

x 10 g each

3530 Iodized Table Salt (Iodide) 1 bottle 

x 200 g

8256 Wild-caught Coho Salmon 2 jars, 6 g 

to 8 g

8257 Aquacultured Coho Salmon 2 jars, 6 g 

to 8 g

8258 Wild-caught Shrimp 2 jars, 6 g 

to 8 g

8259 Aquacultured Shrimp 2 jars, 6 g 

to 8 g

8260 Infant Nutritional Formula 

(hydrolyzed milk-based)

400 g

8261 Adult Nutritional Formula (high-protein) 400 g

See Table 110.1 on the website for more information.
Chemical Composition

Food & Agriculture

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49

Foods and Beverages - Other 

Components of Potential Interest

These SRMs are for validation of analytical procedures 

and calibration of apparatus used in the analysis of trace 

elements and other analytes in foods and related products. 

SRM Description

Unit of 

Issue

1548b Typical Diet 2 x 5 g

1565 Mycotoxins in Corn 2 x 60 g

1566b Oyster Tissue 25 g

1849a Infant/Adult Nutritional Formula I 

(milk-based)

10 pouches 

x 10 g each

1869 Infant/Adult Nutritional Formula II 

(milk/whey/soy-based)

10 pouches 

x 10 g each

1946 Lake Superior Fish Tissue 5 x 7-9 

grams

1947 Lake Michigan Fish Tissue 5 x 8 grams

2386 Avocado Powder 5 x 10 g

2387 Peanut Butter 3 x 170 g

3233 Fortified Breakfast Cereal 60 g each

3234 Soy Flour 50 g

3235 Soy Milk 10 x 10 mL

3253 Yerba Mate Leaves 2 x 10 g

3254 Green Tea (Camellia sinensis) Leaves 5 x 3 g

3255 Green Tea (Camellia sinensis) Extract 5 x 1 g

See Table 110.1 on the website for more information.

Wheat Hardness (kernel form) 

This RM is intended primarily for calibrating instruments 

used to determine the hardness of bulk or single kernel 

wheat. RM 8441a was prepared and analyzed by the 

Federal Grain Inspection Service program, Grain Inspection 

Packers and Stockyards Administration of the United 

States Department of Agriculture. 

SRM Description

Unit of 

Issue

8441a Wheat Hardness (kernel form) set (50)

See Table 110.6 on the website for more information.

Food Contaminants and Allergens

SRM Description

Unit of 

Issue

1566b Oyster Tissue 25 g

1946 Lake Superior Fish Tissue 5 x 7-9 g

1947 Lake Michigan Fish Tissue 5 x 8 g

1953 Organic Contaminants in 

Non-Fortified Human Milk

5 x 5 mL

1954 Organic Contaminants 

in Fortified Human Milk

5 x 5 mL

2387 Peanut Butter 3 x 170 g

3256 Green Tea-Containing Solid 

Oral Dosage Form

5 x 2.5 g

8238 Glyphosphate in Oat Flour (High Level) 100 g

8239 Glyphosphate in Oat Flour (Low Level) 100 g

8404 Almond Flour for Allergen Detection 3 x 170 g

8405 Hazelnut Flour for Allergen Detection 5 x 8 g

8642a FDA Saxitoxin Dihydrochloride Solution 5 x 1.2 mL

See Table 110.2 on the website for more information.

Agricultural Materials (powder 

form) 

SRM Description

Unit of 

Issue

1515 Apple Leaves 50 g

1547 Peach Leaves 50 g

1570a Trace Elements in Spinach Leaves 60 g

1573a Tomato Leaves 50 g

1575a Trace Elements in Pine Needles (Pinus taeda) 50 g

See Table 110.4 on the website for more information.
Chemical Composition

Food & Agriculture 

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50

Fertilizers (powder form) 

These SRMs are intended for use in the fertilizer industry as 

working standards. 

SRM Description

Unit of 

Issue

120c Phosphate Rock (Florida) 90 g

193 Potassium Nitrate 90 g

194a Ammonium Dihydrogen Phosphate 90 g

200b Potassium Dihydrogen Phosphate

(Fertilizer Standard)

90 g

694 Phosphate Rock, Western 90 g

695 Trace Elements in Multi-Nutrient 

Fertilizer

70 g

2429 Flue Gas Desulfurization Gypsum 200 g

See Table 110.5 on the website for more information.

Tobacco-Related Materials 

SRM Description

Unit of 

Issue

3222 Cigarette Tobacco Filler 20 x 10 g

See Table 110.10 on the website for more information.

Dietary Supplement Materials 

(includes nutraceuticals and herbs) 

SRM Description

Unit of 

Issue

3232 Kelp Powder (Thallus laminariae) 3 x 5 g

3235 Soy Milk 10 x 10 mL

3246 Ginkgo biloba (Leaves) 5 x 3 g

3247 Ginkgo biloba (Extract) 5 x 1 g

3248 Ginkgo-Containing Tablets 5 x 1 g

3250 Saw Palmetto (Serenoa repens) Fruit 5 x 6 g

3251 Saw Palmetto (Serenoa repens) Extract 5 x 1 mL

3254 Green Tea (Camellia sinensis) Leaves 5 x 3 g

3255 Green Tea (Camellia sinensis) Extract 5 x 1 g

3256 Green Tea-Containing Solid Oral Dosage Form 5 x 2.5 g

SRM Description

Unit of 

Issue

3262 St. John’s Wort (Hypericum perforatum L.) 

Aerial Parts

5 x 3.3 g

3268 Kudzu (Pueraria montana var. lobata) Extract 5 x 1 g

3275 Omega-3 and Omega-6 Fatty Acids 

in Fish Oil

3 ea 

2 x 1.2 mL

3279 Chromium Dietary Supplement 5 x 6 g

3281 Cranberry (Fruit) 5 x 6 g

3282 Low-Calorie Cranberry Juice Cocktail 5 x 1.2 mL

3283 Cranberry Extract 5 x 2.5 g

3284 Cranberry-Containing Solid Oral 

Dosage Form

5 x 2.5 g

3285 Mixed-Berry Containing Solid

Oral Dosage Form

5 x 2.5 g

3289 Multivitamin Tablets 30 x 5 

bottles

3291 Bilberry Extract 5 x 1 g

3294 Multielement Tablets 30 x 5 

bottles

3299 Ground Turmeric (Curcuma longa L.) Rhizome 5 x 3 g

3300 Curcumin Extract of Turmeric 

(Curcuma longa L.) Rhizome

5 x 1 g

3384 Ground Asian Ginseng (Panax ginseng C.A. 

Meyer) Rhizome

5 x 3 g

3385 Asian Ginseng (Panax ginseng) Extract 5 x 1 g

3389 Ginsenosides Calibration Solutions 5 x 1 mL

3398 Ginger (Zingiber officinale) Rhizome 5 x 1.6 g

3530 Iodized Table Salt (Iodide) 1 x 200 g

8037 Krill Oil 3 x 4.5 mL

8183 Omega-3 and Omega-6 Fatty Acids 

in Botanical Oils

4 x 1.2 mL

8186 Soy Protein Isolate 5 x 10 g

8187 Soy Protein Concentrate 5 x 10 g

8188 Soy-Containing Solid Oral Dosage Form 5 x 2.6 g

8650 Ground Kudzu (Pueraria montana var. lobata) 

Rhizome

5 x 3 g

8644 Ginseng-Containing Solid Oral Dosage Form 5 x 2.6 g

8666 Ginger (Zingiber officinale) Extract 5 x 3 g

See Table 110.9 on the website for more information.
Chemical Composition

Food & Agriculture

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51

Distribution of SRMs in the AOAC Food Triangle

1 W.R. Wolf, K.W. Andrews (1995) Fresenius J. Anal Chem 352:73 -76. 

 

1 SRM 1588c Organics in Fish Oil

SRM 3275 Fatty Acids in Fish Oils

2 SRM 2384 Baking Chocolate

3 SRM 2387 Peanut Butter

SRM 2386 Avocado Powder

4 SRM 1546a Meat Homogenate

SRM 1845a Whole Egg Powder

5 SRM 1568b Rice Flour

SRM 2383a Baby Food Composite

SRM 3233 Fortified Breakfast Cereal

SRM 1869 Infant/Adult Nutritional Formula

SRM 3287 Blueberries

6 SRM 1548b Typical Diet

SRM 1549a Whole Milk Powder

SRM 1849a Infant/Adult Nutritional Formula

7 SRM 1566b Oyster Tissue

SRM 2385 Slurried Spinach

SRM 3234 Soy Flour

SRM 3290 Dry Cat Food

9 SRM 1946 Lake Superior sh Tissue Fi

SRM 1947 Lake Michigan Fish Tissue

SRM 2974a Mussel Tissue

SRM 3252 Protein Drink Mix

NIST classifies food-matrix SRMs based on fat, protein, and carbohydrate content using a triangle developed 

by AOAC INTERNATIONAL1

, based on the supposition that foods (and thus reference materials) within each 

sector will have similar properties and therefore will pose similar challenges in determination of the same 

nutrient. Preparation of food-matrix SRMs has been based on the distribution of foods from a typical US diet 

in the AOAC triangle, with a majority of common foods and SRMs categorized in sectors 5 and 6 (e.g., fruits, 

vegetables, cereals, and grains). Conversely, only a small fraction of foods and SRMs are categorized in 

sectors 1 through 4 (higher-fat foods like meats and nuts). Additional materials are also prepared based on 

suggestions from user communities.
www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

52 

52

Chemical Composition

Inorganics

Food allergies affect millions of Americans every year. Though 

medications can treat allergy symptoms, preventative measures 

such as accurate food labeling and stopping cross-contact with 

potential allergens during food preparation can help ensure people 

are not exposed to foods that might cause an allergic reaction. 

To support these preventative measures, researchers from the 

National Institute of Standards and Technology (NIST) have 

developed tree nut reference materials — hazelnut and almond 

flours — that will help ensure accurate and consistent results for 

test kits that regulators and food manufacturers can use to detect 

tree nut allergens. 

“The main purpose of these test kits is to ensure that a food 

product hasn’t unintentionally come into contact with allergens 

while it was being made,” said NIST chemist Melissa Phillips. In 

contrast with the more advanced regulatory tools for wheat and 

gluten, “there isn’t a test to say if something is hazelnut free,” she 

said. “Promoting awareness of cross-contact is the perspective 

we’re coming from with these reference materials.”

The U.S. Food and Drug Administration (FDA) regulates and 

provides guidance on assessing and managing allergens in food. 

Currently, the FDA recognizes eight food allergens: milk, eggs, fish, 

shellfish, soybeans, wheat, peanuts, and tree nuts. A law was signed 

last year that declared sesame as the ninth food allergen, but the 

addition will not become effective until the beginning of 2023. 

Tree nut allergies affect an estimated 0.5% to 1% of the total U.S 

population. As the name implies, tree nuts come from trees that 

produce walnuts, hazelnuts, almonds, pistachios, pecans, cashews, 

Brazil nuts, and other common nuts.

Symptoms of tree nut or other food allergies can range from mild, 

such as breaking out in hives, to severe, including sudden drops 

in blood pressure, breathing difficulties and even death. The 

root causes of food allergies are often unknown, but the allergic 

reaction itself is caused when the body’s immune system responds 

to proteins in that food. NIST’s Food Protein Allergen Program

crafted the first tree nut reference materials with numerous 

end users in mind, ranging from individual food scientists and 

test kit manufacturers to entire research organizations such 

as the Association of Official Analytical Collaboration (AOAC) 

International, which hosts a Gluten and Food Allergens Program for 

many different groups, some of which provided input and feedback 

on these reference materials. “The reference materials support 

agreement of results within the food allergen community for tree 

nut detection,” said NIST chemist Ashley Beasley Green. 

Current food packaging typically includes statements such as 

“contains milk” or “contains nut products” instead of listing how 

much of an allergen protein is present. To take the reporting 

of food allergens to the next level, the NIST program aims to 

support measurements of how much of a specific allergen protein 

is present, for example X amount of a specific almond protein. 

Knowing which specific proteins are present in a food can help 

physicians better understand and diagnose food allergies. 

With the instruments and standards available now, determining 

the total amount of proteins by measuring each individual protein 

would be prohibitively time-consuming and expensive, so NIST 

researchers took an indirect approach that provided reasonable 

levels of accuracy. They worked with collaborators to measure the 

mass fraction of nitrogen atoms in the sample, which relates to 

how much of the hazelnut or almond proteins are in the sample. 

Researchers also confirmed that all of the proteins were from a 

single food source, and there was no cross-contact. Among other 

uses, the materials could help test kit manufacturers measure the 

total number of hazelnut and almond protein allergens in different 

food products and even compare their amounts.

Each reference material consists of a small pouch of five grams 

of the almond or hazelnut flour, with five pouches in a box. To 

produce them, researchers bought almond and hazelnut flour 

from different local stores and then tested it to ensure it did not 

have cross-contact with other tree nuts or contain other common 

allergens such as peanut and soy, said NIST chemist David Bunk.

Such cross-contact can frequently occur during the harvesting 

of tree nuts and at production plants through the use of shared 

equipment. For example, farmers could use the same agricultural 

equipment to harvest hazelnuts as they would pistachios, or a 

manufacturer could fail to properly clean equipment between 

making different types of flour.

The researchers worked with a company to properly package 

the reference material without creating additional risks of crosscontact. They then sent the materials to test kit developers who 

conducted their own tests on the reference materials, compared 

their results against a NIST-provided analysis, and provided 

feedback on their results and the tests they used. This feedback 

process helped NIST validate its own process and ensure the 

quality of the final product. 

RM 8404 Almond Flour for Allergen Detection and RM 8405 

Hazelnut Flour for Allergen Detection are available at NIST. 

Organizations wishing to purchase the reference materials can visit 

the NIST Standard Reference Materials page.

RM 8404 Almond Flour for Allergen Detection and 

RM 8405 Hazelnut Flour for Allergen Detection
Chemical Composition

Food & Agriculture

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Chemical Composition

Health & Industrial Hygiene

Standard Reference Materials

for Chemical Composition

Geological Materials & Ores

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53
Chemical Composition

Geological Materials & Ores 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

54

Ores 

(powder form) 

SRM Description

Unit of 

Issue

25d Manganese Ore 60 g

180 Fluorspar, High Grade 120 g

182 Lithium Ore (Petalite) 45 g

183 Lithium Ore (Lepidolite) 45 g

277 Tungsten Concentrate 100 g

330a Copper Ore Mill Heads 90 g

331a Copper Ore Mill Tails 40 g

423 Molybdenum Oxide Concentrate 50 g

See Table 111.2(1) on the website for more information.

Ores 

(powder form) 

SRM Description

Unit of 

Issue

670 Rutile Ore 90 g

690 Iron Ore Canada 100 g

691 Iron Oxide, Reduced 100 g

692 Iron Ore, Labrador 100 g

693 Iron Ore (Nimba) 100 g

886 Refractory Gold Ore 200 g

1835 Borate Ore 60 g

2430 Scheelite Ore 100 g

See Table 111.2(2) on the website for more information.

Ores (powder form) 

Phosphate Rocks and Bauxites 

SRM Description

Unit of 

Issue

69b Bauxite (Arkansas) 60 g

120c Phosphate Rock (Florida) 90 g

600 Bauxite, Australian-Darling Range 90 g

694 Phosphate Rock, Western 90 g

696 Bauxite, Surinam 60 g

697 Bauxite, Dominican 60 g

698 Bauxite, Jamaican 60 g

See Table 111.2(3) on the website for more information.

Clays 

(powder form)

SRM Description

Unit of 

Issue

97b Flint Clay 60 g

98b Plastic Clay 60 g

679 Brick Clay 75 g

See Table 111.4 on the website for more information.

Rock and Minerals 

(powder form)

SRM Description

Unit of 

Issue

1d Limestone, Argillaceous 70 g

70b Potassium Feldspar 40 g

81a Glass Sand 75 g

88b Dolomitic Limestone 75 g

99b Soda Feldspar 40 g

165a Glass Sand  75 g

278 Obsidian Rock 35 g

607 Potassium Feldspar 5 g

688 Basalt Rock 60 g

1413 High Alumina Sand 75 g

2429 Flue Gas Desulfurization Gypsum 200 g

2780a Hard Rock Mine Waste 50 g

See Table 111.5 on the website for more information.
Chemical Composition

Geological Materials & Ores

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55

Refractories (powder form)

SRM Description

Unit of 

Issue

76a Burnt Refractory (Al2O3-40%) 75 g

77a Burnt Refractory (Al2O3-60%) 75 g

78a Burnt Refractory (Al2O3-70%) 75 g

198 Silica Brick 45 g

199 Silica Brick 45 g

See Table 111.6 on the website for more information.

Soils, Sediments, and Sludges 

(powder form) 

SRMs 2586, 2587, 2700 2701, 2709a, 2710a, 2711a, 2781, 

2782 also have non-certified leach data. See certificate for 

details and leach methods used. 

SRM Description

Unit of 

Issue

1646a Estuarine Sediment 70 g

1944 New York/New Jersey Waterway Sediment 50 g

2586 Trace Elements in Soil Containing Lead 

From Paint (Nominal 500 mg/kg Lead)

55 g

2587 Trace Elements in Soil Containing Lead From 

Paint (Nominal 3000 mg/kg Lead)

55 g

2700 Hexavalent Chromium 

in Contaminated Soil (Low Level)

75 g

2701 Hexavalent Chromium 

in Contaminated Soil (High Level)

75 g

2702 Inorganics in Marine Sediment 50 g

2703 Sediment for Solid Sampling 

(Small Sample) Analytical Techniques

5 g

2706 New Jersey Soil, Organics and Trace Elements 50 g

2709a San Joaquin Soil 50 g

2710a Montana I Soil 50 g

2711a Montana II Soil 50 g

2780a Hard Rock Mine Waste 50 g

2781 Domestic Sludge 40 g

2782 Industrial Sludge 70 g

8704 Buffalo River Sediment 50 g

See Table 111.7 on the website for more information.
Chemical Composition

Geological Materials & Ores 

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56 56

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Chemical Composition

Geological Materials & Ores

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Chemical Composition

Ceramics & Glasses

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57
Chemical Composition

Ceramics & Glasses 

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58

Nitrides

(powder form) 

SRM Description

Unit of 

Issue

8983 Silicon Nitride  4.5 g

See Table 112.1 on the website for more information.

Cemented Carbides 

(powder form)

SRMs 887-889 are prepared from sintered tungsten carbide 

base materials. 

SRM Description

Unit of 

Issue

887 Cemented Carbide (W-83,Co-10) 100 g

888 Cemented Carbide (W-64,Co-25,Ta-5) 100 g

889 Cemented Carbide (W-75,Co-9,Ta-5,Ti-4) 100 g

See Table 112.2 on the website for more information.

Glasses 

(powder and solid forms) 

SRM Description

Unit of 

Issue

80a Soda-Lime Glass (beads) 45 g

81a Glass Sand 75 g

89 Glass, Lead Barium 45 g

92 Soda-Lime Glass, Low Boron (powder) 45 g

93a Borosilicate Glass 1 wafer

165a Glass Sand  75 g

606 Trace Elements in Basalt Glass  glass 

mounted 

in epoxy

620 Soda-Lime, Flat set (3)

1411 Soft Borosilicate Glass set (10)

1412a Multicomponent Glass (disk) set (2)

1413 High Alumina Sand 75 g

1830 Soda-Lime Float Glass 

(Nominal Mass Fraction 0.1 % Al2O3)

3 platelets

1831 Soda-Lime Sheet Glass 

(Nominal Mass Fraction 1.2 % Al2O3)

3 platelets

2696 Silica Fume (powder) 70 g

See Table 112.3 on the website for more information.

Trace Elements 

(wafer form)

These SRMs are for calibrating instruments and evaluating 

analytical techniques used to determine trace elements in 

inorganic matrices. NOTE: The nominal glass composition 

of SRMs 610 through 617 is 72 % SiO2, 12 % CaO, 

14 % Na2O, and 2% Al2O3. 

SRM Description

Unit of 

Issue

606 Trace Elements in Basalt Glass glass 

mounted 

in epoxy

610 Trace Elements in Glass 4 wafers

611 Trace Elements in Glass 4 wafers

612 Trace Elements in Glass 4 wafers

613 Trace Elements in Glass 4 wafers

614 Trace Elements in Glass 4 wafers

616 Trace Elements in Glass 4 wafers

617 Trace Elements in Glass 4 wafers

See Table 112.4 on the website for more information.
Chemical Composition

Ceramics & Glasses

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Chemical Composition

Cement

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59
Chemical Composition

Cement 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

60 

Cements and Related Materials 

(powder form)

These portland (1880b, 1881b, 1884b, 1885b, 1886a, 

1887b, 1888b, and 1889b) and calcium aluminate (1882a 

and 1883a) cement SRMs are for x-ray spectroscopic and 

chemical analysis of cements and related materials. 

SRM Description

Unit of 

Issue

633a Portland Cement 4 x 5 g

634a Portland Cement 100 g

635a Portland Cement (Blended with Slag) 5 x 5 g

1880b Portland Cement 5 x 5 g

1881b Portland Cement (Blended with Fly Ash) 5 x 5 g

1882a Calcium Aluminate Cement 4 x 5 g

1883a Calcium Aluminate Cement 4 x 5 g

1884b Portland Cement 5 x 4.5 g

1885b Portland Cement 5 x 5 g

1886a Portland Cement 

(White Portland Cement with Low Iron)

4 x 5 g

1886b White Portland Cement 5 x 5 g

1887b Portland Cement 5 x 4 g

1888b Portland Cement 4 x 5 g

1889b Portland Cement 

(Blended with Limestone)

5 x 5 g

2429 Flue Gas Desulfurization Gypsum 200 g

2696 Silica Fume 70 g

See Table 113.1 on the website for more information.

Portland Cement Clinkers 

(solid form) 

These SRMs provide certified values for the abundance of 

major phases in cement clinkers, i.e., the percentages of 

alite (C3S), belite (C2S), aluminate (C3A), and ferrite (C2(A,F)). 

NOTE: In cement chemist notation, C=CaO, S=SiO2, A=Al2O3

and F=Fe2O3. 

SRM Description

Unit of 

Issue

2686a Portland Cement Clinker 4 x 7 g

2687a Portland Cement Clinker 5 x 8 g

2688 Portland Cement Clinker 3 x 10 g

See Table 113.2 on the website for more information.
Chemical Composition

Cement

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Chemical Composition

Health & Industrial Hygiene

Standard Reference Materials

for Chemical Composition

 Engine Wear Materials

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61
Chemical Composition

Engine Wear 

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov 

62 

Lubricating Oils 

SRM Description

Unit of 

Issue

1085c Wear Metals in Lubricating Oil set (10)

1818a Chlorine in Lubricating Base Oils set (5)

1819a Sulfur in Lubricating Base Oil set (5)

1848 Lubricating Oil Additive Package 100 g

See Table 114.2 on the website for more information.
Chemical Composition

Engine Wear 

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Chemical Composition

Health & Industrial Hygiene

Standard Reference Materials

for Chemical Composition

Forensics

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63
Chemical Composition

Forensics 

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64

Ethanol Solutions 

SRM Description

Unit of 

Issue

1828c Ethanol-Water Solutions (six levels) set (6)

2891 Ethanol-Water Solution 

(Nominal Mass Fraction 0.02 %)

5 x 1.2 mL

2892 Ethanol-Water Solution 

(Nominal Mass Fraction 0.04 %)

5 x 1.2 mL

2893a Ethanol-Water Solution 

(Nominal Mass Fraction 0.08 %)

5 x 1.2 mL

2894 Ethanol-Water Solution 

(Nominal Mass Fraction 0.1 %)

5 x 1.2 mL

2895 Ethanol-Water Solution 

(Nominal Mass Fraction 0.2 %)

5 x 1.2 mL

2896 Ethanol-Water Solution 

(Nominal Mass Fraction 0.3 %)

5 x 1.2 mL

2897a Ethanol Water Solution 

(Nominal Mass Fraction 2 %)

5 x 10 mL

2898a Ethanol Water Solution

(Nominal Mass Fraction 6 %)

5 x 10 mL

2899a Ethanol-Water Solution

(Nominal Mass Fraction 25 %)

5 x 10 mL

2900 Ethanol-Water Solution 

(Nominal Mass Fraction 95.6 %)

5 x 10 mL

See Table 105.3 on the website for more information.

Drugs of Abuse, Smoking 

Metabolites, and Contaminates 

(urine)

SRM Description

Unit of 

Issue

1507b THC-9-COOH in Freeze-Dried Urine set (3)

2926 Recombinant Human Insulin-like Growth 

Factor 1 (Frozen)

3 x 0.25 

mL

2927 5N-Labeled Recombinant Human Insulin-like 

Growth Factor 1 (Frozen)

3 x 50 μL

3671 Nicotine Metabolites in Human Urine (Frozen) 3 x 10 mL

3672 Organic Contaminants in Smokers' Urine 

(Frozen)

5 x 10 mL

3673 Organic Contaminants in Non-Smokers' Urine 

(Frozen)

5 x 10 mL

See Table 105.7 on the website for more information.

Crime Scene Investigations

SRM Description

Unit of 

Issue

2460a Standard Bullet Replica each

2461 Standard Cartridge Case each

See Table 109.4 on the website for more information.

DNA Profiling, Nucleic Acid 

Materials, and Monoclonal 

Antibody

Standard Reference Material (SRM) 2372a is intended 

primarily for use in the value assignment of human 

genomic deoxyribonucleic acid (DNA) forensic quantitation 

materials. SRM 2372a consists of three well-characterized 

human genomic DNA materials in pH 8.0 aqueous buffer. 

The components are derived from human buffy coat 

samples and labeled A, B, and C. Component A consists 

of genomic DNA from a single male donor. Component 

B consists of genomic DNA from a single female donor. 

Component C consists of a gravimetric mixture of genomic 

DNA (1 part male donor to 3 parts female donor). SRM 

2372a is certified for copy number and DNA concentration 

(ng/μL). A unit of the SRM consists of one sterile 0.5 mL vial 

of each component, each vial containing approximately 

55 μL of DNA solution. Each of these vials is labeled and is 

sealed with a color -coded screw cap.

SRM 2374 is intended for use as a template for ribonucleic 

acid (RNA) control synthesis using in vitro transcription 

(IVT). These RNA controls are designed to be used as 

external, or “spike-in”, controls to support confidence 

in gene expression assays by providing quantitative 

assessment of the technical performance of a gene 

expression measurement. A unit of the SRM contains 96 

different 0.5 mL polypropylene tubes, with approximately 

10 μg of dehydrated plasmid deoxyribonucleic acid (DNA) 

in each tube. Depending on the strand transcribed, the 

controls will mimic either “sense” or “anti-sense” eukaryotic 

messenger RNA (mRNA). 
Chemical Composition

Forensics

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65

SRM 2392 is intended to provide quality control when 

performing the polymerase chain reaction (PCR) and 

sequencing of human mitochondrial DNA (mtDNA) for 

forensic identifications, medical diagnosis, or mutation 

detection. It may also be used as a control when amplifying 

(PCR) and sequencing any DNA. SRM 2392 Mitochondrial 

DNA Sequencing contains DNA extracted from two cell 

lines plus cloned DNA from a region that is difficult to 

sequence. The certificate accompanying the SRM details 

the base pair sequences of the DNA, and the sequences 

of 58 unique primer sets which permit the amplification 

and sequencing of any specific area, or the entire human 

mitochondrial DNA (strand). SRM 2392 consists of three 

frozen components packaged in one box. For further 

information see: SP260-155.

RMs 8366, 8375, 8391, 8392, 8393, and 8398 are intended 

for assessing performance of human genome sequencing, 

including whole genome sequencing, whole exome 

sequencing, and more targeted sequencing such as gene 

panels. Specifically, the material can be used to obtain 

estimates of true positives, false positives, true negatives, 

and false negatives for variant calls.

SRM Description

Unit of 

Issue

2365 BK Virus DNA Quantitative Standard 1 x 110 μL

2366a Cytomegalovirus DNA (TowneΔ147 BAC) 

for DNA Measurements

1 x 150 μL

2372a Human DNA Quantitation Standard 3 x 55 μL

2373 Genomic DNA Standards for HER2

Measurements

5 vials, 

1 each

2374 DNA Sequence Library for External RNA 

Controls

96 tubes

2391d PCR-Based DNA Profiling Standard 5 vials

SRM Description

Unit of 

Issue

2392 Mitochondrial DNA Sequencing (Human) set (3)

2393 CAG Repeat Length Mutation 

in Huntington's Disease

set (6)

8366 EGFR and MET Gene Copy Number Standards

for Cancer Measurements

6 x 100 μL

8375 Microbial Genomic DNA Standards for 

Sequencing Performance Assessment 

(MG-001, MG-002, MG-003, MG-004)

4 vials, 

1 each

8376 Microbial Pathogen DNA Standards for 

Detection and Identification

20 tubes

8391 Human DNA for Whole-Genome Variant 

Assessment (Son of Eastern European 

Ashkenazi Jewish Ancestry) (HG-002)

1 vial

8391

(QTY10)

Human DNA for Whole-Genome Variant 

Assessment (Son of Eastern European 

Ashkenazi Jewish Ancestry) (HG-002)

10 vials

8392 Human DNA for Whole-Genome Variant 

Assessment (Family Trio of Eastern European 

Ashkenazi Jewish Ancestry) 

(HG-002, HG-003, HG-004)

3 vials, 

1 each

8393 Human DNA for Whole-Genome Variant 

Assessment (Son of Chinese Ancestry) 

(HG-005)

1 vial

8393

(QTY10)

Human DNA for Whole-Genome Variant 

Assessment (Son of Chinese Ancestry) 

(HG-005)

10 vials

8398 Human DNA for Whole-Genome Variant 

Assessment (Daughter of Utah/European 

Ancestry) (HG-001)

1 vial

8398

(QTY10)

Human DNA for Whole-Genome Variant 

Assessment (Daughter of Utah/European 

Ancestry) (HG-001)

10 vials

See Table 105.8 on the website for more information.
Chemical Composition

Forensics 

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66

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Standard Reference Materials

for Physical Composition

Ion Activity

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67
Physical Composition

Ion Activity 

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68

pH Calibration (powder form) 

These SRMs are used to prepare solutions of known 

hydrogen ion activity to calibrate commercial pH 

instruments. SRMs 186g and 191d are each certified for use 

as an admixture only. SRM 186g (186-I-g and 186-II-g) may 

be used to prepare solutions with a pH of 6. 8640 at 25°C, or 

physiological buffer solutions with a pH of 7.4157 at 25°C. 

SRM Description

Unit of 

Issue

185i Potassium Hydrogen Phthalate  60 g

186g Potassium Dihydrogen Phosphate (186-I-g) 

Disodium Hydrogen Phosphate (186-II-g)

1 x 30 g; 

1 x 45 g 

187f Sodium Tetraborate Decahydrate 

(Borax)

30 g

188 Potassium Hydrogen Tartrate  60 g

189c Potassium Tetroxalate Dihydrate  65 g

191d Sodium Bicarbonate (191d-I) 

Sodium Carbonate (191d-II)

1 x 25 g;

1 x 30 g

2193a Calcium Carbonate

[used as saturated Ca(OH)2 solution]

30 g

See Table 201.1 on the website for more information.

pD Calibration (powder form) 

These SRMs are for the preparation of solutions of known 

deuterium ion activity to calibrate pH instruments to 

indicate pD data. SRMs 2186-I and 2186-II, and 2191a and 

2192a are certified for use as admixtures only.

SRM Description

Unit of 

Issue

2185 Potassium Hydrogen Phthalate pD Standard 60 g

2186I Potassium Dihydrogen Phosphate 30 g

2186II Disodium Hydrogen Phosphate 30 g

2191a Sodium Bicarbonate 30 g

2192a Sodium Carbonate 30 g

See Table 201.3 on the website for more information.

Ion-Selective Electrode Calibration 

(powder form) 

These SRMs are certified for the calibration of ion-selective 

electrodes and have conventional ionic activities based on 

the Stokes-Robinson hydration theory for ionic strengths 

greater than 0.1 mol/L. 

SRM Description

Unit of 

Issue

2201 Sodium Chloride (Ion-Selective) 125 g

2203 Potassium Fluoride (Standard for 

Ion-Selective Electrodes)

125 g

See Table 201.4 on the website for more information.
Physical Composition

Ion Activity

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Standard Reference Materials

for Physical Composition

Polymeric Properties

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69
Physical Composition

Polymeric Properties 

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70

Polymers 

(liquid, pellet, and powder forms) 

These SRMs are for the calibration of instrumentation used 

in polymer technology science for the determination of 

molecular weight, and molecular weight distribution and 

as characterized samples for other physical properties of 

polymers.

Polymers 

SRM Description

Unit of 

Issue

705a Polystyrene 

(Narrow Molecular Weight Distribution)

5 g

706a Polystyrene (Broad Molecular Mass 

Distribution)

18 g

1473c Low Density Polyethylene Resin 60 g

1474b Polyethylene Resin 60 g

1475a Polyethylene, Linear 50 g

1476a Branched Polyethylene Resin 12 g

1478 Polystyrene 

(Narrow Molecular Weight Distribution)

2 g

1479 Polystyrene 

(Narrow Molecular Weight Distribution)

2 g

1482a Linear Polyethylene Narrow Molecular Mass 

Distribution (Nominal Mass-Average Molar 

Mass of 13 600 g/mol)

0.3 g

1483a Linear Polyethylene Narrow Molecular Mass 

Distribution (Nominal Mass-Average Molar 

Mass of 32 100 g/mol)

0.3 g

1484a Linear Polyethylene 0.3 g

1488 Poly (Methyl Methacrylate) 

(29 K Narrow Molecular Weight Distribution)

2 g

2885 Polyethylene (Mass-Average Molar Mass [Mw] 

6 280 g/mol)

0.3 g

2886 Polyethylene (Mass-Average Molar Mass [Mw] 

87 000 g/mol)

0.3 g

2887 Polyethylene (Mass-Average Molar Mass [Mw] 

196 400 g/mol)

0.3 g

See Table 202.1 on the website for more information.

Melt Flow Rate 

SRM Description

Unit of 

Issue

1496 Unpigmented Polyethylene Gas Pipe Resin 0.9 kg

See Table 202.1 on the website for more information.

Viscosity

SRM Description

Unit of 

Issue

2492 Bingham Paste Mixture 

for Rheological Measurements

kit for 

two 

batches

2493 Bingham Mortar Mixture 

for Rheological Measurements

kit for 

two 

batches

2497 Bingham Concrete Mixture for Rheological 

Measurements

kit for 

one 

batch

See Table 202.1 on the website for more information.

Elements in Polymers 

SRM Description

Unit of 

Issue

2855 Additive Elements in Polyethylene 3 Levels, 

80 g each

2859 Restricted Elements in Polyvinyl Chloride 25 g

2861 Restricted Elements in Polyvinyl Chloride 25 g

See Table 202.2 on the website for more information.
Physical Composition

Polymeric Properties

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Standard Reference Materials

for Physical Composition

Thermodynamic Properties

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71
Physical Composition

Thermodynamic 

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72

Phy

ca

Combustion Calorimetry 

(powder form) 

These SRMs are for use as standards for calibration of 

combustion bomb calorimeters used in checking the 

performance of apparatus, and analytical procedures. 

SRM Description

Unit of 

Issue

39j Benzoic Acid 

Calorimetric Standard

30 g

1657 Synthetic Refuse-Derived Fuel 

Combustion Calorimetric Standard

100 g

2152 Urea 

Combustion Calorimetric Standard

25 g

See Table 203.1 on the website for more information.

Differential Scanning Calorimetry 

and Differential Thermal Analysis

These SRMs are intended for calibration and validation 

of differential scanning calorimeters, differential thermal 

analyzers, and similar instruments.

SRM Description

Unit of 

Issue

2232 Indium DSC Calibration Standard - 

Temperature and Enthalpy of Fusion

1 g

2234 Gallium for Thermal Analysis 2 g

2235 Bismuth for Thermal Analysis 1.5 g

See Table 203.5 on the website for more information.

Enthalpy and Heat Capacity 

SRM Description

Unit of 

Issue

705a Polystyrene (Narrow Molecular 

Weight Distribution)

5 g

720 Sapphire Heat Capacity 15 g

781D2 Molybdenum - Heat Capacity (rod form) 6.4 mm D

See Table 203.5 on the website for more information.

Thermal Analysis Purity Set 

SRM 1514 is for evaluating methods of determining purity 

by differential scanning calorimetry. It consists of pure 

phenacetin and phenacetin doped with p-aminobenzoic 

acid.

SRM Description

Unit of 

Issue

1514 Thermal Analysis Purity Set set (4)

See Table 203.5 on the website for more information.

Defining Fixed Point, International 

Temperature Scale of 1990, ITS-90 

(solid forms) 

These SRMs are for use in preparing defining fixed points of 

the International Temperature Scale of 1990, ITS-90. 

SRM Description

Unit of 

Issue

740a Zinc Freezing-Point Standard 419.527 °C  200 g

741a Tin Freezing-Point Standard 200 g

See Table 203.8 on the website for more information.
Physical Composition

Thermodynamic 

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73

ysi

al

Reference Points (solid forms)

These moderate purity SRMs are for use in preparing 

reference point devices and for calibrating thermometers, 

thermocouples, and other temperature measuring devices.

SRM Description

Unit of 

Issue

742 Aluminum Oxide Pyrometric Standard 10 g

8172 Copper Freezing-Point Reference (1084.6 °C) 450 g

8173 Lead Freezing-Point Reference (327.453 °C) 600 g

See Table 203.10 on the website for more information.

Freezing Point, Melting Point, and 

Triple Point Cells (solid forms)

These SRM fixed point devices are for use in the realization of 

internationally accepted secondary reference points and/or 

triple points. They are not intended for calibration of 

differential scanning calorimeters. 

SRM Description

Unit of 

Issue

1972 1,3-Dioxolan-2-one Triple Point Standard 60 g

8174 Gallium Melting-Point Reference (29.7646 °C) 

(fixed-point cell)

25 g

See Table 203.11 on the website for more information.

Thermocouple Materials 

and Thermometers 

SRM Description

Unit of 

Issue

1749 Gold versus Platinum Thermocouple 

Certified Thermometer

each

1967a High-Purity Platinum Thermoelement

(platinum wire)

0.51 mm D 

x 1 m L

See Table 203.13 on the website for more information.

Thermal Conductivity of Iron 

(rod form), Fibrous Glass, and 

Polystyrene 

SRM Description

Unit of 

Issue

1450e Thermal Conductivity - Fibrous Glass Board each

1453 Thermal Conductivity -

Expanded Polystyrene Board

each

8420 Electrolytic Iron 0.64 cm D 

x 5 cm L

See Table 203.15 on the website for more information.

Thermal Expansion of Metal, 

Glass (rod form)

SRM Description

Unit of 

Issue

731L1 Borosilicate Glass - Thermal Expansion 5 cm

731L2 Borosilicate Glass - Thermal Expansion 10 cm

731L3 Borosilicate Glass - Thermal Expansion 15 cm

See Table 203.16 on the website for more information.

Thermal Resistance Properties of 

Fibrous Glass and Fumed Silica Board 

SRM Description

Unit of 

Issue

1452 Thermal Resistance - Fibrous Glass Blanket 

for High-Precision Measurements

each

1459 Thermal Resistance - Fumed Silica Board each

See Table 203.17 on the website for more information.

Thermoelectric Materials 

SRM Description

Unit of 

Issue

3451 Low-Temperature Seebeck 

Coefficient Standard

bar

3452 High-Temperature Seebeck Coefficient 

Standard (295 K to 900 K)

bar

 See Table 203.18 on the website for more information.
Standard Reference Materials . • L , 

, 

Standard Reference Data . • L , 

. , 

' 

Calibrations _ • L , 

Standard Reference Instruments _: • '° 

1

, 

', , 

- I I I I 

NIST Measurement Services Websites of Interest

Standard Reference Materials

https://www.nist.gov/srm

Historical Archived Certificates/Reports of Investigation

https://shop.nist.gov/ccrz__

CCPage?pageKey=SRMArchive&cclcl=en_US

NIST Scientific and Technical Databases

https://www.nist.gov/srd

Calibrations Services

https://www.nist.gov/calibrations

Standard Reference Instruments

https://www.nist.gov/sri

74 www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov
Standard Reference Materials

for Physical Composition

Optical Properties

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75
Physical Composition

Optical Properties 

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76

Molecular Absorption (film, filter, 

solid, and solution forms)

The optical SRMs for spectrophotometry are certified 

transfer standards that fall into three general categories: 

transmittance, wavelength, and stray radiant energy; each 

of which addresses a specific instrumental parameter of 

an absorption spectrometer that must be in control for 

accurate optical transmittance measurements. To obtain 

optimum verification results, each SRM must be used within 

the specified range of conditions for which it is intended.

SRM Description

Unit of 

Issue

931h Liquid Absorbance Filters, UV-VIS set (12)

1921b IR Transmission Wavelength/Wavenumber 

Standard (Polystyrene Film)

1 card

1928 Infrared Specular High Reflectance Standard 

(Nominal Diameter 51 mm)

disk

1929 Infrared High Reflectance Specular Standard 

(Nominal Diameter 25 mm)

disk

2031c Metal-on-Fused-Silica Neutral Density 

Filters (250 nm to 635 nm)

set (3)

2034 Holmium Oxide Solution Wavelength 

Standard from 240 nm to 650 nm

cuvette

2035b Ultraviolet-Visible-Near-Infrared 

Wavelength/Wavenumber Transmission 

Standard

each

2036 Near Infrared Wavelength/Wavenumber 

Reflection Standard

each

See Table 204.1 on the website for more information.

Infrared Reflectance (solid form) 

SRM Description

Unit of 

Issue

2036 Near Infrared Wavelength/

Wavenumber Reflection Standard

each

See Table 204.2 on the website for more information.

Optical Rotation (powder form) 

SRM 17g is intended for calibrating or checking polarimetric 

apparatus. In aqueous solution, the optical rotation of SRM 

17g is value assigned at four wavelengths.

SRM Description

Unit of 

Issue

17g Sucrose Optical Rotation 60 g

See Table 204.2 on the website for more information.
Physical Composition

Optical Properties 

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77

Fluorescence and Raman 

Spectroscopy 

SRM Description

Unit of 

Issue

1932 Fluorescein Solution 3 x 2 mL

1934 Fluorescent Dyes for Quantitative Flow 

Cytometry (Visible Spectral Range)

set (4) 

2241 Relative Intensity Correction Standard for 

Raman Spectroscopy: 785 nm Excitation

each

2242a Relative Intensity Correction Standard for 

Raman Spectroscopy: 532 nm Excitation

each

2244 Relative Intensity Correction Standard for 

Raman Spectroscopy: 1064 nm Excitation

each

2246 Relative Intensity Correction Standard for 

Raman Spectroscopy: 830 nm Excitation

each

2940a Relative Intensity Correction Standard 

for Fluorescence Spectroscopy: 

Orange Emission

each

2941a Relative Intensity Correction Standard 

for Fluorescence Spectroscopy: 

Green Emission

each

2942 Relative Intensity Correction Standard 

for Fluorescence Spectroscopy: 

Ultraviolet Emission

each

2943 Relative Intensity Correction Standard 

for Fluorescence Spectroscopy: 

Blue Emission

each

2944 Relative Intensity Correction Standard 

for Fluorescence Spectroscopy: 

Red Emission

each

See Table 204.2 on the website for more information.

Photography (chart form) 

SRM 1010a is used to test the resolving power of cameras 

or of whole microcopying systems. It consists of 5 charts 

printed photographically on paper, that have 26 highcontrast, 5-line patterns ranging in spatial frequency of 

1 mm-1 to 18 mm-1.

SRM Description

Unit of 

Issue

1010a Microcopy Resolution Test Charts set (5)

See Table 204.2 on the website for more information.
Physical Composition

Optical Properties 

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78

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Physical Composition

Optical Properties 

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Standard Reference Materials

for Physical Composition

Radioactivity

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79
Physical Composition

Radioactivity

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80 

Radiation Dosimetry 

(wire form) 

This SRM is a cobalt-in-aluminum alloy wire 0.5 mm in 

diameter and 1 m in length for use as a neutron density 

monitor standard. 

Radionuclide Calibration Services

Radioactive SRM Purchasing Instructions & License 

Certification Form

Radioactive SRMs-General Info

SRM Description

Unit of 

Issue

953 Neutron Density Monitor Wire 1 m

See Table 205.1 on the website for more information.

Special Nuclear Materials

The U.S. Department of Energy New Brunswick 

Laboratory issues special nuclear reference materials as 

NBL Certified Reference Materials (CRMs). These CRMs 

include the plutonium and uranium assay, and 

isotopic materials previously issued by the National 

Institute of Standards and Technology. All orders or 

inquiries should be addressed to: U.S. Department 

of Energy, New Brunswick Laboratory, 9800 S. Cass 

Avenue, Bldg. 350, Argonne, IL 60439-4899. Attn: 

Reference Materials Sales; Phone (630) 252-2767; 

Fax (630) 252-6256; E-mail usdoe.nbl@ch.doe.gov

Radiopharmaceuticals (solution and gaseous forms) 

These SRMs are intended for the calibration of radioactivity-measuring instruments. They are calibrated in terms of 

activity per gram of solution (except SRM 4415, which is calibrated in terms of activity). Each SRM is contained in a 

5 mL flame-sealed glass ampoule and, except for SRM 4415, consists of the radionuclide dissolved in an aqueous solution 

(usually acidic). These SRMs are produced in collaboration with the NRMAP, Inc.  and, because of the short half lives, 

are available only at specific times.

When an import permit for radioactive material is required of a customer outside the U.S., NIST must have a copy 

to complete an order and facilitate shipment.

SRM Description

Unit of 

Issue

Approximate 

Activity 

Half Life 

(days) Month Produced*

4401L Iodine-131 Radioactivity Standard 5 mL 5 MBq/g 8 February

4404L Thallium-201 Radioactivity Standard  5 mL 10 MBq/g 3 June

4407L Iodine-125 Radioactivity Standard  5 mL 5 MBq/g 59.4 December

4410H Technetium-99m Radioactivity Standard  5 mL 1.0 GBq/g 0.3 September

4412L Molybdenum-99 Radioactivity Standard  5 mL 10 MBq/g 2.74 April

4415L Xenon-133 Radioactivity Standard 5 mL 150 MBq/g 5.243 September

4416L Gallium-67 Radioactivity Standard  5 mL 5 MBq/g 3.3 May

4417L Indium-111 Radioactivity Standard  5 mL 10 MBq/g 2.8 August

4427L Yttrium-90 Radioactivity Standard  5 mL 5 MBq/g 2.67 October

See Table 205.5 on the website for more information.

*Check the website for details as to the order date deadline for these SRMs. 

For information on the NRMAP/NIST Program, see https://www-s.nist.gov/srmors/certificates/documents/NRMAP-PharmBroch2012.pdf
Physical Composition

Radioactivity

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81

Radioactive Solutions 

These SRMs are intended for the calibration of radioactivity 

measuring instruments and for the monitoring of chemical 

and geochemical processes. They are calibrated in terms 

of activity per gram of solution. Each SRM is contained 

in a flame-sealed glass ampoule or bottle and, except as 

noted, consists of the radionuclide dissolved in an aqueous 

solution (usually acidic). 

When an import permit for radioactive material is required 

of a customer outside the U.S., NIST must have a copy to 

complete an order and facilitate shipment. 

SRM Description

Unit of 

Issue

4222d Carbon-14-n-hexadecane Radioactivity

Standard

5 mL

4226d Nickel-63 Radioactivity Standard  5 mL

4233f Cesium-137 Radioactivity Standard  5 mL

4239a Strontium-90 Radioactivity Standard 5 mL

4251d Barium-133 Radioactivity Standard 5 mL

4274 Holmium-166m Gamma-ray Emission 

Rate Standard

5 mL

4288b Technetium-99 Radioactivity Standard 5 mL

4320b Curium-244 Radioactivity Standard 5 mL

4321d Natural Uranium Radioactivity Standard 5 mL

4322d Americium-241 Radioactivity Standard 5 mL

4323c Plutonium-238 Radioactivity Standard 5 mL

4324b Uranium-232 Radioactivity Standard 5 mL

4326a Polonium-209 Radioactivity Standard 5 mL

4328c Thorium-229 Radioactivity Standard 5 mL

4329a Curium-243 Radioactivity Standard 5 mL

4330c Plutonium-239 Radioactivity Standard 3 mL

SRM Description

Unit of 

Issue

4332e Americium-243 Radioactivity Standard 5 mL

4334j Plutonium-242 Radioactivity Standard 5 mL

4337 Lead-210 Radioactivity Standard 5 mL

4338b Plutonium-240 Radioactivity Standard 5 mL

4339b Radium-228 Radioactivity Standard 5 mL

4340b Plutonium-241 Radioactivity Standard  5 mL

4341a Neptunium-237 Radioactivity Standard 5 mL

4342a Thorium-230 Radioactivity Standard  5 mL

4361c Hydrogen-3 Radioactivity Standard 500 mL

4370d Europium-152 Radioactivity Standard 5 mL

4915f Cobalt-60 Radioactivity Standard 5 mL

4919I Strontium-90 Radioactivity Standard  5 mL

4926e Hydrogen-3 Radioactivity Standard 20 mL

4927g Hydrogen-3 Radioactivity Standard 5 mL

4929f Iron-55 Radioactivity Standard 5 mL

4943 Chlorine-36 Radioactivity Standard  3 mL

4949d Iodine-129 Radioactivity Standard 5 mL

4965a Radium-226  Radioactivity Standard 5 mL

4966a Radium-226 Radioactivity Standard  5 mL

4967a Radium-226 Radioactivity Standard 5 mL

4969 Radium-226 Radioactivity Standard 5 mL

See Table 205.4 on the website for more information.
Physical Composition

Radioactivity 

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82

Carbon-14 Dating (solid form) 

This SRM is an international standard for contemporary 

carbon-14 against which world-wide measurements can 

be compared. Each SRM consists of approximately 225 g 

of a 450 kg lot of oxalic acid prepared by fermentation of 

French beet molasses from the 1977 spring, summer, and 

autumn harvests. 

SRM Description

Unit of 

Issue

4990C Oxalic Acid  8 x 28 g

See Table 205.7 on the website for more information.

Radioactive Natural Matrix 

Materials (powder form)

For further information on the Descriptions of 

Radioactive Environmental Natural Matrix Standards 

click link: Descriptions of Environmental Natural 

Matrix Standards

When an import permit for radioactive material is 

required of a customer outside the U.S., NIST must have 

a copy to complete an order and facilitate shipment.

Radionuclide Calibration Services

Radioactive SRM Purchasing Instructions & License 

Certification Form

Radioactive SRMs-General Info

SRM Description

Unit of 

Issue

4350B River Sediment Environmental 

Radioactivity Standard

85 g

4351 Human Lung Environmental 

Radioactivity Standard

45 g

4352 Human Liver Environmental 

Radioactivity Standard

45 g

4353a Rocky Flats Soil Number 2 75 g

4354 Freshwater Lake Sediment Environmental 

Radioactivity Standard

25 g

4355 Peruvian Soil Powder 75 g

4356 Ashed Bone Environmental 

Radioactivity Standard

15 g

4357 Ocean Sediment Environmental 

Radioactivity Standard

85 g

4358 Ocean Shellfish Radionuclide Standard 150 g

4359 Seaweed Radionuclide Standard 300 g

See Table 205.11 on the website for more information.

Ordering Radioactive SRM(s)?

Start by submitting a request to our SRM Sales Office 

via email (srminfo@nist.gov). After it has been received, 

you will be contacted for any additional information 

needed. Based on the regulations that apply to you 

as a customer either within the United States (United 

States includes Puerto Rico and all territories, and 

possessions of t h e United States) or outside the 

United States, NIST will determine if your request 

can be cleared f o r processing. Requirements for 

the different customer locations are outlined below. 

Customers in Organizations within the United States:

If the material(s) requested is/are subject to license 

requirements by the Nuclear Regulatory Commission 

(NRC), then prior t o shipment NIST is required by law 

t o verify t h e domestic customer’s authorization to 

receive and possess radioactive material. Once NIST 

makes a determination, you will be notified with the 

disposition of your request. For approved requests, your 

order confirmation or quote will be forwarded to you.

Customers in Organizations outside the United States:

• Import permit for radioactive material: Your 

country may require an import permit for radioactive 

material. Prior confirmation of your import permit 

status is necessary for the disposition of your request.

• If your country requires an import permit, NIST 

must have a copy in order to complete your 

order and facilitate shipment with the carrier. 

• Export controls: NIST is required to determine if your 

country is subject to export controls as determined 

by the Nuclear Regulatory Commission (NRC) 

and the U.S. Department of Commerce, Bureau of 

Industry and Security. NIST will review those controls 

and determine the disposition of your request.

• Once NIST has received your import permit (if 

applicable) and approved your request for export, 

your order confirmation or quote will be forwarded.

If you have any technical questions, please contact the 

NIST Radiation Physics Division at radsrms@nist.gov.
Physical Composition

Radioactivity

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Physical Composition

Electrical Properties

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83
Physical Composition

Electrical Properties 

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84

Electrical Resistivity and 

Conductivity of Iron (rod form) 

SRM Description

Unit of 

Issue

8420 Electrolytic Iron 0.64 D x 5.0

See Table 206.1 on the website for more information.
Physical Composition

Electrical Properties

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Physical Composition

Metrology

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85
Physical Composition

Metrology 

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86

Depth Profiling (wafer form) 

SRMs 2133, 2134, and 2137 are for calibrating the 

secondary ion response to minor and trace element levels 

in a silicon matrix. SRM 2133 is certified for phosphorus; 

SRM 2134 is certified for arsenic; SRM 2137 is certified 

for boron. SRM 2135c is for calibrating equipment used 

to measure sputtered depth and erosion rates in surface 

analysis. SRM 2135c is certified for total chromium and 

total nickel thickness, for individual layer uniformity, for 

nickel/chromium bilayer uniformity, and for individual 

layer thickness. 

SRM Description

Unit of 

Issue

2133 Phosphorus Implant in Silicon Depth 

Profile Standard

each

2134 Arsenic Implant in Silicon Depth 

Profile Standard

each

2135c Ni/Cr Thin Film Depth Profile Standard each

2137 Boron Implant in Silicon Standard

for Calibration of Concentration in 

a Depth Profile

each

See Table 207.3 on the website for more information.
Physical Composition

Metrology

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87

Microscale Dimensional 

Measurement Standards 

RM 8820 is primarily intended to be used for X and Y scale 

(or magnification) calibrations from less than 10 times 

magnifications to more than 100 000 times magnifications 

in scanning electron microscopes (SEMs). It was designed 

to provide good contrast at low and high electron landing 

energies (accelerating voltages). Beyond testing scale 

calibration, it can be used for non-linearity measurements, 

especially at lower than 10 000 times magnifications. 

It can also be used for optical and scanning probe, and 

other types of microscopes. Most SEMs require a set of 

calibration structures of different sizes to cover the full 

range of possible magnifications. This Reference Material 

is designed to meet that need.

SRM Description

Unit of 

Issue

8820 Scanning Electron Microscope Scale 

Calibration Artifact

each

See Table 207.9 on the website for more information.

RM 8820. Optical microscope view of the 20 mm × 20 mm chip.
Chemical Composition

Metrology

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88

New SRMs/RMs

Check out our SRM website (www.nist.gov/srm) for news regarding SRMs/RMs. 

This includes information about newly released SRMs, RMs, Renewals, and Revisions. 

It also has links to available resources for questions or ordering SRMs. 

Would you like to add your name to our mailing list to 

receive updates on New SRMs/RMs ?

Sign up on our homepage at

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Chemical Composition

Metrology

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Standard Reference Materials

for Physical Composition

Liquids & Glasses

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89
Physical Composition

Liquids & Glasses 

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90

Phy

ca

Chemical Resistance [Durability] 

of Glass (solid form) 

This SRM is for checking test methods and calibrating 

equipment used to determine the resistance of glass 

containers to chemical attack. 

SRM Description

Unit of 

Issue

622 Soda-Lime-Silica Glass 2.2 kg

See Table 208.1 on the website for more information.

Viscosity of Glass (bar form) 

SRM 717a is for checking the performance of high 

temperature viscosity equipment (rotating cylinders) and 

low temperature viscosity equipment (fiber elongation, 

beam bending, parallel plates, etc.). 

SRM Description

Unit of 

Issue

717a Hi Boron Glass Viscosity block

See Table 208.3 on the website for more information.

Glass Liquidus Temperature 

(solid form) 

This SRM is for checking test methods and for calibrating 

equipment used to determine the liquidus temperature of 

glass by the gradient furnace methods per ASTM C 829. 

SRM Description

Unit of 

Issue

1416 Aluminosilicate Glass for 

Liquidus Temperature

250 g

See Table 208.4 on the website for more information.

Relative Stress Optical Coefficient 

(bar form)

SRM Description

Unit of 

Issue

709 Extra Dense Lead Glass block

See Table 208.6 on the website for more information.

Electrical Properties of Dielectrics

SRM 624 is intended to validate test methods and for 

calibrating equipment used to determine the dc volume 

resistivity of glass per ASTM C 657. 

SRM Description

Unit of 

Issue

624 Lead-Silica Glass for dc Volume Resistivity 200 g

See Table 208.2 on the website for more information. 

Viscosity Fixpoints (solid forms) 

These SRMs are for the calibration of equipment for the 

determination of the softening, annealing, and strain 

points of glass. 

SRM Description

Unit of 

Issue

709 Extra Dense Lead Glass block

717a Hi Boron Glass Viscosity block

See Table 208.5 on the website for more information.

Density 

SRMs 211d and 2214 are for reference in the determination 

of the density of liquids. The certified densities were 

determined by means of hydrostatic weighing and are 

provided at 15 °C, 20 °C, and 25 °C.

SRM Description

Unit of 

Issue

211d Toluene Liquid Density Extended Range 4 x 5 mL

2214 Isooctane Liquid Density 4 x 5 mL

See Table 208.8 on the website for more information.
Physical Composition

Liquids & Glasses

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ysi

al

Standard Reference Materials

for Physical Composition

X-Ray Diffraction

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91
Physical Composition

X-Ray Diffraction 

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92

Diffraction and Scattering 

SRMs 656, 676a, 674b, 1878b, and 1879b consist of high phase purity materials for use in the quantitative analysis of samples 

by the internal standard method. SRM 656 consists of 2 silicon nitride powders, one high in the α polymorph, the other high in 

the β polymorph content. SRMs 640f, 660c, 675, and 1976c consist of materials with select crystallographic and microstructure 

properties used in the evaluation of diffraction equipment for the following variables; 1) d-spacing or line position, 2) line or 

instrument intensity, and 3) instrumental or sample contributions to the shape of reflection profiles. SRM 1976c, a sintered 

alumina plate, is also certified with respect to lattice parameters as well as 13 relative intensity values from 22° to 155° 2q (Cu 

Kα ). SRM 1990 is certified for lattice parameter.

SRM Description Unit of Issue

640f Line Position and Line Shape Standard for Powder Diffraction (Silicon Powder) 7.5 g

656 Silicon Nitride for Quantitative Analysis by Powder Diffraction 2 x 10 g

660c Line Position and Line Shape Standard for Powder Diffraction (Lanthanum Hexaboride Powder) 6 g

674b X-Ray Powder Diffraction Intensity Set (Quantitative Powder Diffraction Standard) 10 g

675 Line Position, Mica (XRD) 7.5 g

676a Alumina Powder for Quantitative Analysis by X-Ray Diffraction 20 g

1878b Respirable Alpha Quartz (Quantitative X-Ray Powder Diffraction Standard) 5 g

1879b Respirable Cristobalite (Quantitative X-Ray Powder Diffraction Standard) 5 g

1976c Instrument Response Standard for X-Ray Powder Diffraction disc

1979 Powder Diffraction Line Profile Standard for Crystallite Size Analysis (Nano-Crystalline ZnO Powder) 2 x 3 g

1990 Single Crystal Diffractometer Alignment Standard - Ruby Sphere 3 spheres

2000 Calibration Standard for High-Resolution X-Ray Diffraction block

3600 Absolute Intensity Calibration Standard for Small-Angle X-Ray Scattering coupon

See Table 209.1 on the website for more information.
Standard Reference Materials

for Engineering Composition

Sizing

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93
Engineering Composition

Sizing 

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94

Particle Size 

(powder and solid forms) 

These SRMs are intended for evaluating and calibrating 

specific types of particle size measuring instruments, 

including light scattering, electrical zone flow-through 

counters, optical, and scanning electron microscopes, 

sedimentation systems, and wire cloth sieving devices.

SRMs 1003c, 1004b, 1017b, 1018b, and 1019b each 

consist of soda-lime glass beads covering a particular size 

distribution (PSD) range. RM 8010 is a three bottle set of 

different sands (A, C, and D), intended for use in sieving 

only, and covers the sieve size range from 30 mesh to 325 

mesh.

SRM 659 consists of equiaxed silicon nitride particles 

measured using sedimentation. SRM 1978 consists of 

granular, irregular shaped zirconium oxide particles 

measured using sedimentation. SRM 1982 consists of 

spheroidal particles measured using scanning electron 

microscopy, laser scattering, and sieving.

SRM 1961 is monodisperse latex particles in a water 

suspension produced by the National Aeronautics and 

Space Administration (NASA).

RMs 8012 and 8013 are gold nanoparticles in water.

SRM Description

Unit of 

Issue

1003c Glass Beads - Particle Size Distribution 

(20 μm to 50 μm diameter range)

28 g

1017b Glass Beads - Particle Size Distribution 

(100 μm to 400 μm diameter range)

70 g

1019b Glass Beads - Particle Size Distribution 

(750 μm to 2450 μm diameter range)

200 g

1021 Glass Beads - Particle Size Distribution 

(2 μm to 12 μm diameter range)

4 g

1690 Polystyrene Spheres 

(1 μm Diameter Particle Size)

5 mL

1691 Polystyrene Spheres 

(0.3 μm Diameter Particle Size)

5 mL

1961 Polystyrene Spheres 

(30 μm Diameter Particle Size)

5 mL

1963a Polystyrene Spheres 

(100 nm Diameter Particle Size)

5 mL

1964 Polystyrene Spheres 

(60 nm Diameter Particle Size) 

5 mL

1978 Particles Size Distribution Standard 

for Gravity Sedimentation

5 g

SRM Description

Unit of 

Issue

1984 Thermal Spray Powder - Particle Size 

Distribution Tungsten Carbide/Cobalt 

(Acicular)

14 g

1985 Thermal Spray Powder - Particle Size 

Distribution Tungsten Carbide/Cobalt 

(Spheroidal)

14 g

8010 Sand for Sand Sieve Analysis 3 x 130 g

8012 Gold Nanoparticles, 

Nominal 30 nm Diameter

2 x 5 mL

8013 Gold Nanoparticles, 

Nominal 60 nm Diameter

2 x 5 mL

8634 Ethylene Tetrafluoroethylene for Particle Size 

Distribution and Morphology

20 mL

8988 Titanium Dioxide Powder - 

Particle Size Distribution

6 g

See Table 301.1 on the website for more information.
Engineering Composition

Sizing

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95

Cement and Coal Fly Ash Fineness 

SRM 46h is for determining sieve residue according to ASTM 

C430. Each set consists of 10 sealed vials, each containing 

approximately 5 g of cement. 

SRM 114r is for calibrating the Blaine fineness meter 

according to the latest issue of ASTM C204, to determine 

sieve residue according to ASTM C430, and to verify 

procedure for particle size distribution by a laser 

diffraction method (no-standard method available). 

Each set consists of 20 sealed vials, each containing 

approximately 5 g of cement. 

SRM Description

Unit of 

Issue

46h Portland Cement Fineness Standard 10 x 5 g

114r Portland Cement Fineness Standard 20 x 5 g

2689 Coal Fly Ash 3 x 10 g

2690 Coal Fly Ash 3 x 10 g

2691 Coal Fly Ash 3 x 10 g

See Table 301.2 on the website for more information.

Particle Count Materials 

(powder and suspension forms) 

These SRM and RM materials are intended for use in 

calibrating the response of particle sizing instrumentation, 

including optical counters, in accordance with National 

Fluid Power Association (NFPA) and ISO standard methods 

(NFPA/T2.9.6 R2-1998, ISO/FDIS 11171, ISO/FDIS 12103) 

for determining particle contamination in oils. SRM 2806b 

is certified for particle concentration, and projected area 

diameter. It consists of a polydisperse, irregularly-shaped 

mineral dust suspended in 5606 hydraulic fluid. RMs 8631b 

and 8632 are mineral test dusts of medium, and ultrafine 

particle size, and can be used to prepare suspensions in 

other types of oils. NOTE: The same lot of medium test 

dust was used to produce SRM 2806b and RM 8631b, 

and is a derivative of Arizona Road Dust. 

SRM Description

Unit of 

Issue

2806d Medium Test Dust (MTD) in Hydraulic Fluid 3 x 400 mL

8631b Medium Test Dust (MTD) 20 g

8632a Ultra Fine Test Dust (UFTD) 20 g

See Table 301.5 on the website for more information.

Electrophoretic Mobility, E 

(suspension form) 

SRM 1980 is intended for use in the calibration and 

evaluation of equipment used to measure electrophoretic 

mobility. It consists of a goethite suspension saturated with 

phosphate in a sodium perchlorate electrolyte solution. 

SRM Description

Unit of 

Issue

1980 Positive Electrophoretic (+μE) 

Mobility Standard (500 mg/L)

40 mL

1992 Zeta Potential - Colloidal Silica

(Nominal Mass Fraction 0.15 %)

4 x 5 mL

1993 Zeta Potential – Colloidal Silica

(Nominal Mass Fraction 2.2 %)

2 x 25 mL

See Table 301.3 on the website for more information.

Surface Area of Powders and 

Mercury Porosimetry Standards 

These SRMs are intended for calibrating and verifying the 

performance of instruments used to determine the specific 

surface area of powders by the Brunauer, Emmett, and Teller 

(BET) method or instruments that use mercury intrusion to 

measure the pore size and porosity of porous materials. 

The surface areas of SRMs 1898, 1900, 2206, and 2207 are 

based on both multi-point and single point analysis of the 

BET equation. 

SRM Description

Unit of 

Issue

1898 Titanium Dioxide Nanomaterial 15 g

1900 Specific Surface Area Standard 4 g

1917 Mercury Porosimetry Standard 10 g

2206 Controlled Pore Glass - 

BET Specific Surface Area 

(Nominal Pore Diameter 300 nm) 

5 g

2207 Controlled Pore Glass - 

BET Specific Surface Area 

(Nominal Pore Diameter 18 nm)

5 g

2696 Silica Fume (powder form) 70 g

See Table 301.4 on the website for more information.
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96

Please Register Your SRM Online!

Registering will ensure that you will be notified of 

any technical updates or developments.

https://www.nist.gov/srm_reg
Chemical Composition

Sizing

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

Standard Reference Materials

for Engineering Composition

Surface Finish

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97
Engineering Composition

Surface Finish 

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98

Microindentation Hardness 

(block form) 

These SRMs are for use in calibrating, and checking the 

performance of microhardness testers, and may be used in 

conjunction with ASTM E 384. SRMs 1893 through 1907 are 

1.25 cm x 1.25 cm (SRM 2798 is 1.35 cm x 1.35 cm), and 

were made by electroforming the test metal on AISI 1010 

steel substrate. SRMs 2830 and 2831 are intended to meet 

the needs of the structural, electronic, and biomedical 

ceramics communities. 

SRM Description

Unit of 

Issue

1893 Copper Microhardness Test Block (Knoop) each

1894a Vickers Microhardness of Copper each

1895 Nickel Microhardness Test Block (Knoop) each

1896b Vickers Microhardness of Nickel each

1905 Nickel Microhardness Test Block (Knoop) each

1906 Nickel Microhardness Test Block (Knoop) each

1907 Nickel Microhardness Test Block (Knoop) each

1908 Vickers Microhardness of Nickel each

1909 Vickers Microhardness of Nickel each

2798a Vickers Microhardness of Nickel each

2828 Knoop Microhardness of Steel each

2829 Vickers Microhardness of Steel each

2830 Knoop Hardness of Ceramics each

2831 Vickers Hardness of Ceramics 

and Hardmetals

each

See Table 302.1 on the website for more information.

Abrasive Wear 

(block form) 

This SRM is for use in the dry sand/rubber wheel abrasion test 

per ASTM G 65, Procedure A. 

SRM Description

Unit of 

Issue

1857 Tool Steel for Abrasive Wear Standard 2 blocks

See Table 302.2 on the website for more information.

Surface Roughness 

(block form)

These SRMs are for calibrating stylus instruments that 

measure surface roughness. These electroless-nickel 

coated steel blocks have a sinusoidal roughness profile 

machined on the top surface. 

SRM Description

Unit of 

Issue

2073a Sinusoidal Roughness Specimen each

See Table 302.4 on the website for more information.

Rockwell Hardness 

(block form) 

These Standard Reference Materials (SRMs) are transfer 

standards intended primarily for use in the calibration 

and verification of the performance of Rockwell hardness 

equipment using the applicable Rockwell hardness C 

scale (HRC), Rockwell hardness 15N scale (HR15N), or 

Rockwell hardness 30N scale (HR30N). Each SRM unit is 

a steel test block, nominally 64 mm in diameter and 15 

mm thick, having a polished test surface described by a 

micro-engraved circle 52 mm in diameter. Each SRM unit is 

individually certified and bears a unique serial number on 

the edge of the block. 

SRM Description

Unit of 

Issue

2810 Rockwell C Hardness - Low Range 1 block

2811 Rockwell C Hardness - Mid Range 1 block

2812 Rockwell C Scale Hardness - High Range 1 block

2816 Rockwell Hardness 15N Scale - Low Range 

(Nominal 72 HR15N)

1 block

2817 Rockwell Hardness 15N Scale - Mid Range 

(Nominal 83 HR15N)

1 block

2818 Rockwell Hardness 15N Scale - High Range 

(Nominal 91 HR15N)

1 block

2819 Rockwell Hardness 30N Scale - Low Range 

(Nominal 45 HR30N)

1 block

2820 Rockwell Hardness 30N Scale - Mid Range 

(Nominal 64 HR30N)

1 block

2821 Rockwell Hardness 30N Scale - High Range 

(Nominal 79 HR30N)

1 block

See Table 302.5 on the website for more information.
Engineering Composition

Surface Finish

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Standard Reference Materials

for Engineering Composition

Fire Research

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99
Engineering Composition

Fire Research 

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100

Flooring Radiant Panel 

(sheet form) 

This SRM consists of three sheets of kraft paperboard. It is 

for checking the operation of flooring radiant panel test 

apparatus used to measure critical radiant flux as per ASTM 

E 648. 

SRM Description

Unit of 

Issue

1012 Flooring Radiant Panel set (3)

See Table 305.4 on the website for more information.

Standard Cigarettes for Ignition 

Strength and Ignition Resistance 

Testing 

SRM 1082 is intended for use by test laboratories to assess, and 

control their testing of cigarette ignition in accordance with 

ASTM Standard Methods E 2187-16. SRM 1196a is intended 

for use by test laboratories to test mattresses, upholstered 

furniture, and its components, and thermal insulation for 

resistance to cigarette ignition in accordance with 16 CFR 

1632, 16 CFR 1634 (proposed), and 16 CFR 1209. 

SRM Description

Unit of 

Issue

1082 Cigarette Ignition Strength Standard

(200 cigarettes)

1 carton

1196a Standard Cigarette for Ignition 

Resistance Testing (400 cigarettes)

2 cartons

See Table 305.5 on the website for more information.
Engineering Composition

Fire Research

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Standard Reference Materials

for Engineering Composition

Nanomaterials

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

101
Engineering Composition

Nanomaterials 

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102

Nanomaterials 

(less than or equal to 100 nm) 

SRM Description

Unit of 

Issue

1898 Titanium Dioxide Nanomaterial 15 g

1963a Polystyrene Spheres 

(Nominal 100 nm Diameter)

5 mL

1964 Polystyrene Spheres 

(Nominal 60 nm Diameter)

5 mL

8012 Gold Nanoparticles 

(Nominal 30 nm Diameter)

2 x 5 mL

8013 Gold Nanoparticles 

(Nominal 60 nm Diameter)

2 x 5 mL

8017 Polyvinylpyrrolidone Coated Silver 

Nanoparticles (Nominal Diameter 75 nm)

5

8027 Silicon Nanoparticles 

(Nominal Diameter 2 nm)

5 x 1 mL

See Table 308.1 on the website for more information.
Engineering Composition

Nanomaterials

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Standard Reference Materials

for Engineering Composition

Miscellaneous Performance

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103
Engineering Composition

Miscellaneous Performance 

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104

Impact Standards: Charpy V-Notch 

Specimens 

These SRMs are test specimens intended primarily for the 

verification of Charpy testing machines. The dimensions of 

these SRMs comply with the current ASTM Standard E23 

and the current ISO 148-1 Standard.

SRMs 2092, 2096, and 2098 are NIST-Verification Charpy 

V-notch specimens that have a post-test evaluation service 

and proficiency test data available with them. SRMs 2092 

and 2096 are to be tested at -40 °C; SRM 2098 is to be tested 

at room temperature (21 °C). These SRMs should be tested 

(broken) at the same time, then returned to NIST Boulder 

for evaluation. An acceptable machine will produce an 

average value within 1.4 J or 5 % of the certified energy 

value, whichever is greater.

SRMs 2093 and 2097 are Self-Verification Charpy V-notch 

specimens that do not have any post-test services available 

with them. These SRMs provide a lower cost option for the 

Self-Service user. SRMs 2093 and 2097 are to be tested at 

-40 °C. These SRMs are not returned to NIST Boulder for 

evaluation.

SRMs 2112 and 2113 are NIST-Verification Charpy V-notch 

specimens that are certified for absorbed energy at -40 °C 

and room temperature, and for maximum force at room 

temperature. These SRMs provide a means to verify the 

performance of both the energy and force scales of an 

instrumented Charpy impact machine at room temperature 

(21 °C). They can also be used to verify just the energy scale 

of a machine at -40° C, interchangeably with SRMs 2092 

and 2096. An acceptable machine will produce an average 

value within 1.4 J or 5 % of the certified energy value, 

whichever is greater. Currently, specific requirements are 

not available to verify the performance of the force scale 

for a Charpy test machine.

SRMs 2216, 2218, and 2219 are intended for the verification 

of maximum force and absorbed energy values measured 

at room temperature using a small-scale Charpy impact 

machine, in accordance with the current standards 

ASTM E2248 or ISO 14556. Each SRM unit consists of a set 

of three KLST-type specimens needed to perform a single 

verification.

SRM Description

Unit of 

Issue

2092 Low-Energy Charpy V-Notch Specimens 

(NIST-Verification, 8-mm Striker) 

set

2093 Low-Energy Charpy V-Notch Specimens 

(Self-Verification, 8-mm Striker) 

set

2096 High-Energy Charpy V-Notch Specimens 

(NIST-Verification, 8-mm Striker)

set

2097 High-Energy Charpy V-Notch Specimens 

(Self-Verification, 8-mm Striker) 

set

2098 Super-High-Energy Charpy V-Notch 

Specimens (NIST-Verification, 8-mm Striker)

set

2099 Super-High-Energy Charpy V-Notch 

Specimens (Self-Verification, 8 mm Striker)

set

2112 Dynamic Impact Force Verification Specimens 

(Self-Verification, 8-mm Striker, 24 kN nominal)

set

2113 Dynamic Impact Force Verification Specimens 

(Self-Verification, 8-mm Striker, 33 kN nominal)

set

2197 Low-Energy Charpy V-Notch Specimens 

(Self-Verification, 2-mm Striker)

set

2198 High-Energy Charpy V-Notch Specimens 

(Self-Verification, 2-mm Striker)

set

2199 Super-High-Energy Charpy V-Notch 

Specimens (Self-Verification, 2 mm Striker)

set

2216 Miniaturized Low-Energy Charpy V-Notch 

KLST Specimens (Self-Verification)

set

2218 Miniaturized High-Energy Charpy V-Notch 

KLST Specimens (Self-Verification)

set

2219 Miniaturized Super-High-Energy Charpy 

V-Notch KLST Specimens (Self-Verification)

set

2237 Miniaturized Low-Energy Charpy V-Notch RHS 

Specimens (Self-Verification)

set

2238 Miniaturized High-Energy Charpy V-Notch RHS 

Specimens (Self-Verification)

set

2239 Miniaturized Super-High-Energy Charpy 

V-Notch RHS Specimens (Self-Verification)

set

See Table 309.1 on the website for more information.
Engineering Composition

Miscellaneous Performance

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105

Tape Adhesion Testing 

(sheet form) 

This SRM is intended as a uniform source of linerboard for 

use with ASTM Standards D 2860 Standard Test Method 

for Adhesion of Pressure-Sensitive Tape to Fiberboard 

at 90° Angle and Constant Stress, D 3654 Standard Test 

Method for Holding Power of Pressure-Sensitive Tapes, and 

D 3889 Standard Method for Adherence to Linerboard of 

Pressure-Sensitive Tapes at Low Temperature. 

SRM Description

Unit of 

Issue

1810a Linerboard 50 each

See Table 309.4 on the website for more information.

Bleached Kraft Pulps 

(sheet form) 

RM 8495 Northern Softwood Bleached Kraft Pulp and 

RM 8496 Eucalyptus Hardwood Bleached Kraft Pulp are 

intended primarily for use in fundamental studies on the 

physical properties of fibers and paper sheets. The materials 

selected for these two RMs are bleached dried lap pulp, 

each from a single lot of a standard commercial production 

run. The materials were selected because of their differing 

fiber size, differing papermaking properties, and similarity 

to commercially available materials.

RMs 8495 and 8496 were developed and prepared with 

input and support from the Pulp Material Research 

Committee (PMRC), a subcommittee of the Fundamental 

Research Committee. These materials were donated by 

industry and are being distributed by the SRM Program. 

At this time, no extensive property measurements have 

been made on these materials beyond ensuring they were 

within the control limits of the normal production run. A 

measurement error study is in progress with participation 

by international paper technical laboratories. As results 

become available, they will be published and added to the 

Report of Investigation that accompanies each of these 

materials.

SRM Description

Unit of 

Issue

8495 Northern Softwood 10 sheets

8496 Eucalyptus Hardwood 10 sheets

See Table 309.5 on the website for more information.

Secondary Ferrite Standards 

Reference Materials RM 8480 and RM 8481, Secondary Ferrite 

Standards, are intended for the calibration of instruments 

used to measure weld metal ferrite content in accordance 

with American National Standards Institute/American 

Welding Society (ANSI/AWS) Standard A4.2, and 

International Organization of Standardization (ISO) 

Standard 8249. RM 8480 consists of a low range (8 

specimens distributed in the range of 0 FN to 30 FN), and 

RM 8481 is the corresponding high range (8 specimens 

distributed in the range of 30 FN to 120 FN).

Previously issued SRMs 485 to 488 are a suite of SRMs 

for Austenite in Ferrite, which were produced a little 

over 20 years ago. They are now considered technically 

obsolete and are not longer suitable for their intended 

purpose. NIST has more recently developed other 

reference mixtures of austenite and ferrite, RM 8480 

Secondary Ferrite Number Standard-Low Range, and RM 

8481 Secondary Ferrite Number Standard-High Range, 

which are listed below. These are in units of FN, as they 

were designed for magnetic response measurements of 

ferrite in an austenitic matrix.

SRM Description

Unit of 

Issue

8480 Secondary Ferrite Number 

Standard - Low Range

10x12x20

8481 Secondary Ferrite Number 

Standard - High Range

set (8)

See Table 309.6 on the website for more information.
Engineering Composition

Miscellaneous Performance 

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106

Fracture Toughness of Ceramics 

SRMs 2100a and 2100b Fracture Toughness of Ceramic 

are intended for verification of fracture toughness testing 

procedures, and may be used in conjunction with ASTM

Standard Test Method ASTM C1421-99 “Standard Test 

Methods for Fracture Toughness of Advanced Ceramics.”

A unit of SRMs 2100a or 2100b consists of five hot-pressed 

silicon nitride flexure specimens. Each specimen is 

3 mm x 4 mm x (45 to 47) mm. The SRM may be used with any 

fracture toughness test method, but is optimized for beam 

bending test configurations.

SRM Description

Unit of 

Issue

2100a Fracture Toughness of Ceramic 5 bars

2100b Fracture Toughness of Ceramic 5 bars

See Table 309.7 on the website for more information.

Magnetic Moment 

These Standard Reference Materials are intended for use 

in the calibration of magnetometers (such as vibrating 

sample magnetometers) that are used in the measurement 

of magnetic properties of materials. 

SRM Description

Unit of 

Issue

762 Magnetic Moment Standard - Nickel Disk 6 mm D

764a Magnetic Susceptibility Standard - 

Platinum Cylinder

3 mm D x 

3.42 mm L

772a Magnetic Moment Standard - Nickel Sphere each

2853 Magnetic Moment Standard - Yttrium Iron 

Garnet Sphere

each

See Table 309.8 on the website for more information.

Standard Bullet Replica 

and Cartridge Case 

SRM Description

Unit of 

Issue

2460a Standard Bullet Replica each

2461 Standard Cartridge Case each

See Table 309.11 on the website for more information.

Force Calibration

SRM Description

Unit of 

Issue

3461 Standard Reference Cantilevers for Atomic 

Force Microscopy Spring Constant Calibration

each

See Table 309.12 on the website for more information.
Numerical Index

SRM Description Page #

1d Limestone, Argillaceous. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

4l Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5m Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

6g Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

8k Bessemer Steel (Simulated), 0.1 % Carbon. . . . . . . . . . . . . . . . . . . . 2

12h Basic Open-Hearth Steel, 0.4 % Carbon. . . . . . . . . . . . . . . . . . . . . . . 2

13g 0.6 % Carbon Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

14g Carbon Steel (AISI 1078). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

16f Basic Open-Hearth Steel, 1 % Carbon . . . . . . . . . . . . . . . . . . . . . . . . 2

17g Sucrose Optical Rotation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,76

19h Basic Electric Steel, 0.2 % Carbon. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

20g AISI 1045 Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

25d Manganese Ore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

30f Cr-V Steel (SAE 6150). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

32e Carbon Low Alloy Steel (SAE 3140). . . . . . . . . . . . . . . . . . . . . . . . . . . 2

33e Nickel Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

39j Benzoic Acid Calorimetric Standard. . . . . . . . . . . . . . . . . . . . . . . . . 72

46h Portland Cement Fineness Standard. . . . . . . . . . . . . . . . . . . . . . . . 95

50c Tungsten-Chromium-Vanadium Steel. . . . . . . . . . . . . . . . . . . . . . . . 4

53e Lead-Base Bearing Metal (84Pb-10Sb-6Sn). . . . . . . . . . . . . . . . . . . 9

54d Bearing Metal (Tin Base) (powder). . . . . . . . . . . . . . . . . . . . . . . . . . 10

57b Silicon Metal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

58a Ferrosilicon (73 % Si Regular Grade). . . . . . . . . . . . . . . . . . . . . . . . . . 4

59a Ferrosilicon Grade E1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

64c Ferrochromium High-Carbon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

68c High-Carbon Ferromanganese . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

69b Bauxite (Arkansas). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

70b Potassium Feldspar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

72g Low Alloy Steel (AISI 4130). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

76a Burnt Refractory (Al2O3-40%). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

77a Burnt Refractory (Al2O3-60%). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

78a Burnt Refractory (Al2O3-70%). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

80a Soda-Lime Glass (beads). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

81a Glass Sand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54, 58

84l Potassium Hydrogen Phthalate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

87a Silicon-Aluminum Alloy (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . 8

88b Dolomitic Limestone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

89 Glass, Lead Barium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

90 Ferrophosphorus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

92 Soda-Lime Glass, Low Boron (powder). . . . . . . . . . . . . . . . . . . . . . 58

93a Borosilicate Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

97b Flint Clay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

98b Plastic Clay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

99b Soda Feldspar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

100b Manganese Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

101g 18 Cr-10 Ni Steel (AISI 304L) (powder form). . . . . . . . . . . . . . . . . . . . . . 4

107c Cast Iron (Ni-Cr-Mo). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

114r Portland Cement Fineness Standard. . . . . . . . . . . . . . . . . . . . . . . . 95

115a Copper-Nickel-Chromium Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . 5

120c Phosphate Rock (Florida). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50, 54

122i Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

123c Stainless Steel, Cr-Ni-Nb (AISI 348) (chip form). . . . . . . . . . . . . . . . 4

125b LA Steel, High Silicon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

126c High-Nickel Steel (Nominal Mass Fraction 36 % Ni). . . . . . . . . . . 3

127b Solder (40Sn—60Pb). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

129c LA Steel, High Sulfur (SAE 112). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

131h Refined Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

132b Tool Steel (AISI M2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

133b Chromium-Molybdenum Steel (chip form). . . . . . . . . . . . . . . . . . . 4

SRM Description Page #

134a Molybdenum-Tungsten-Chromium-Vanadium Steel. . . . . . . . . . 4

136f Potassium Dichromate, (Oxidimetric Standard). . . . . . . . . . . . . . 14

139b Chromium-Nickel-Molybdenum Steel. . . . . . . . . . . . . . . . . . . . . . . . 2

141e Acetanilide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

143d Cystine (L-Cystine). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

152a Basic Open-Hearth Steel, 0.5 % Carbon (Tin Bearing). . . . . . . . . 2

155 Chromium-Tungsten Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

158a Silicon Bronze (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

160b Stainless Steel, Cr 18-Ni 12-Mo 2 (AISI 316) (chip form). . . . . . . . 4

163 Chromium Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

165a Glass Sand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54,58

166c Stainless Steel, Low-Carbon (AISI 316L)(chip form). . . . . . . . . . . . 4

173c Titanium Alloy UNS R56400 (chip form). . . . . . . . . . . . . . . . . . . . . 10

178 0.4C Basic Oxygen Furnace Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

179 LA Steel, High Silicon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

180 Fluorspar, High Grade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

182 Lithium Ore (Petalite). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

183 Lithium Ore (Lepidolite). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

185i Potassium Hydrogen Phthalate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

186g Potassium Dihydrogen Phosphate (186-I-g) Disodium 

 Hydrogen Phosphate (186-II-g). . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

187f Sodium Tetraborate Decahydrate (Borax). . . . . . . . . . . . . . . . . . . . 68

188 Potassium Hydrogen Tartrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

189c Potassium Tetroxalate Dihydrate . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

191d Sodium Bicarbonate (191d-I) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

 Sodium Carbonate (191d-II). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

193 Potassium Nitrate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

194a Ammonium Dihydrogen Phosphate. . . . . . . . . . . . . . . . . . . . . . . . 50

195 Ferrosilicon (75 % Si-High Purity Grade). . . . . . . . . . . . . . . . . . . . . . 4

196 Ferrochromium Low-Carbon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

198 Silica Brick. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

199 Silica Brick. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

200b Potassium Dihydrogen Phosphate(Fertilizer Standard). . . . . . . 50

211d Toluene Liquid Density Extended Range. . . . . . . . . . . . . . . . . . . . 90

277 Tungsten Concentrate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

278 Obsidian Rock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

291 Cr-Mo Steel (ASTM A-213). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

293 Cr-Ni-Mo Steel (AISI 8620). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

330a Copper Ore Mill Heads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

331a Copper Ore Mill Tails. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

334 Gray Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

339 17 Chromium-9 Nickel-0.2 Selenium Steel(chip form). . . . . . . . . 4

344 15 Chromium-7 Nickel Steel (Mo Precipitation Hardening). . . . 3

345b Fe-Cr-Ni Alloy UNS J92180. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

346a Valve Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

349a Waspaloy (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

350c Benzoic Acid (Acidimetric Standard). . . . . . . . . . . . . . . . . . . . . . . . 14

351a Sodium Carbonate (Acidimetric Standard). . . . . . . . . . . . . . . . . . 14

361 AISI 4340 Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

363 Chromium-Vanadium Steel (Modified) (chip form). . . . . . . . . . . . 2

368 Carbon Steel (AISI 1211) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

399 Unalloyed Copper - Cu VI (chip form). . . . . . . . . . . . . . . . . . . . . . . . . 8

423 Molybdenum Oxide Concentrate. . . . . . . . . . . . . . . . . . . . . . . . . . . 54

454 Unalloyed Copper XI (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

457 Unalloyed Copper IV (solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

458 Beryllium-Copper (17510) (chip form). . . . . . . . . . . . . . . . . . . . . . . . 8

459 Beryllium-Copper (17200) (chip form). . . . . . . . . . . . . . . . . . . . . . . . 8

460 Beryllium-Copper Alloy (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . 8

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

107
Numerical Index

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108

SRM Description Page #

480 Tungsten 20 % - Molybdenum Alloy Electron 

 Microprobe Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

481 Gold-Silver Wires for Microprobe Analysis. . . . . . . . . . . . . . . . . . . 12

482 Gold-Copper Wires for Microprobe Analysis. . . . . . . . . . . . . . . . . 12

494 Unalloyed Copper I (solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

495 Unalloyed Copper II (solid). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

498 Unalloyed Copper V (solid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

500 Unalloyed Copper - Cu VII. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

600 Bauxite, Australian-Darling Range. . . . . . . . . . . . . . . . . . . . . . . . . . . 54

606 Trace Elements in Basalt Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

607 Potassium Feldspar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

610 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

611 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

612 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

613 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

614 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

616 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

617 Trace Elements in Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

620 Soda-Lime, Flat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

622 Soda-Lime-Silica Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

624 Lead-Silica Glass for dc Volume Resistivity. . . . . . . . . . . . . . . . . . . 90

625 Spectrographic Zinc-Base Die-Casting Alloy A. . . . . . . . . . . . . . . 10

626 Spectrographic Zinc-Base Die-Casting Alloy B. . . . . . . . . . . . . . . 10

627 Spectrographic Zinc-Base Die-Casting Alloy C. . . . . . . . . . . . . . . 10

628 Spectrographic Zinc-Base Die-Casting Alloy D. . . . . . . . . . . . . . . 10

629 Spectrographic Zinc-Base Die-Casting Alloy E. . . . . . . . . . . . . . . 10

630 Spectrographic Zinc-Base Die-Casting Alloy F. . . . . . . . . . . . . . . 10

631 Spectrographic Zinc Spelter (Modified). . . . . . . . . . . . . . . . . . . . . 10

633a Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

634a Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

635a Portland Cement (Blended with Slag). . . . . . . . . . . . . . . . . . . . . . . 60

640f Line Position and Line Shape Standard

 for Powder Diffraction (Silicon Powder). . . . . . . . . . . . . . . . . . . . 92

641 Spectroscopic Titanium-Base Standards 

 Titanium Alloy, 8 Mn (A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

643 Spectroscopic Titanium-Base Standards 

 Titanium Alloy, 8 Mn (C). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

647 Titanium Alloy, Al-Mo-Sn-Zr (chip form). . . . . . . . . . . . . . . . . . . . . 10

648 Titanium-Base Alloy 5Al-2Sn-2Zr-4Cr-4Mo(chip form). . . . . . . . 10

649 Titanium-Base Alloy (15V-3Al-3Cr-3Sn) (chip form). . . . . . . . . . . 10

654b Titanium Alloy, Al-V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

656 Silicon Nitride for Quantitative Analysis 

 by Powder Diffraction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

660c Line Position and Line Shape Standard 

for Powder Diffraction (Lanthanum Hexaboride Powder). . . . 92

663 Chromium-Vanadium Steel (Modified). . . . . . . . . . . . . . . . . . . . . . . 3

670 Rutile Ore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

674b X-Ray Powder Diffraction Intensity Set

 (Quantitative Powder Diffraction Standard). . . . . . . . . . . . . . . . 92

675 Line Position, Mica (XRD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

676a Alumina Powder for Quantitative Analysis 

 by X-Ray Diffraction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

679 Brick Clay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

682 High-Purity Zinc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

683 Zinc Metal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

688 Basalt Rock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

689 Ferrochromium Silicon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

690 Iron Ore Canada. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

691 Iron Oxide, Reduced. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

692 Iron Ore, Labrador. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

SRM Description Page #

693 Iron Ore (Nimba). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

694 Phosphate Rock, Western. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50, 54

695 Trace Elements in Multi-Nutrient Fertilizer. . . . . . . . . . . . . . . . . . . 50

696 Bauxite, Surinam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

697 Bauxite, Dominican. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

698 Bauxite, Jamaican. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

705a Polystyrene (Narrow Molecular Weight Distribution). . . . . . 70,72

706a Polystyrene (Broad Molecular Mass Distribution). . . . . . . . . . . . 70

709 Extra Dense Lead Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

717a Hi Boron Glass Viscosity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

720 Sapphire Heat Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

723e Tris(hydroxymethyl)aminomethane 

 (HOCH2)CNH2 Acidimetric Standard. . . . . . . . . . . . . . . . . . . . . . . 14

728 Intermediate-Purity Zinc (pellet form). . . . . . . . . . . . . . . . . . . . . . . 14

731L1 Borosilicate Glass - Thermal Expansion. . . . . . . . . . . . . . . . . . . . . . 73

731L2 Borosilicate Glass - Thermal Expansion. . . . . . . . . . . . . . . . . . . . . . 73

731L3 Borosilicate Glass - Thermal Expansion. . . . . . . . . . . . . . . . . . . . . . 73

740a Zinc Freezing-Point Standard 419.527 °C . . . . . . . . . . . . . . . . . . . . 72

741a Tin Freezing-Point Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

742 Aluminum Oxide Pyrometric Standard. . . . . . . . . . . . . . . . . . . . . . 73

762 Magnetic Moment Standard - Nickel Disk. . . . . . . . . . . . . . . . . 106

764a Magnetic Susceptibility Standard - Platinum Cylinder. . . . . . 106

772a Magnetic Moment Standard - Nickel Sphere. . . . . . . . . . . . . . . 106

781D2 Molybdenum - Heat Capacity (rod form). . . . . . . . . . . . . . . . . . . . 72

853a Aluminum Alloy 3004 (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

854a Aluminum Alloy 5182 (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

855a Aluminum Casting Alloy 356 (chip form). . . . . . . . . . . . . . . . . . . . . 8

856a Aluminum Casting Alloy 380 (chip form). . . . . . . . . . . . . . . . . . . . . 8

858 Aluminum Alloy 6011 (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

861 Nickel-based Superalloy PWA 1484 (chip form). . . . . . . . . . . . . . . 9

862 High-Temperature Alloy L 605 (chip form). . . . . . . . . . . . . . . . . . 3,8

864 Nickel Alloy UNS N06600 (chip form). . . . . . . . . . . . . . . . . . . . . . . . . 9

865 Inconel 625 (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

866 Incoloy 800 (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

867 Ni-Fe-Cr Alloy UNS N08825 (chip form). . . . . . . . . . . . . . . . . . . . . . . 3

868 High-Temperature Alloy (Fe-Ni-Co). . . . . . . . . . . . . . . . . . . . . . . . . . . 3

869b Column Selectivity Test Mixture

 for Liquid Chromatography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

870 Column Performance Test Mixture 

 for Liquid Chromatography. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

871 Phosphor Bronze (CDA 521) (chip form). . . . . . . . . . . . . . . . . . . . . . 8

872 Phosphor Bronze (CDA 544) (chip form). . . . . . . . . . . . . . . . . . . . . . 8

874 Cupro-Nickel, 10 % (CDA 706) “HIGH-PURITY” (chip form). . . . . 8

875 Cupro-Nickel, 10 % (CDA 706) “DOPED” (chip form). . . . . . . . . . . 8

880 Nickel Silver (CDA 770) (granular form). . . . . . . . . . . . . . . . . . . . . . . 8

882 Nickel-Copper Alloy (65Ni-31Cu-3Al)(chip form). . . . . . . . . . . . . . 9

885 Refined Copper (pin form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

886 Refractory Gold Ore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

887 Cemented Carbide (W-83,Co-10). . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

888 Cemented Carbide (W-64,Co-25,Ta-5). . . . . . . . . . . . . . . . . . . . . . . 58

889 Cemented Carbide (W-75,Co-9,Ta-5,Ti-4). . . . . . . . . . . . . . . . . . . . 58

893 Stainless Steel (SAE 405) (chip form). . . . . . . . . . . . . . . . . . . . . . . . . 4

895 Stainless Steel (SAE 201) (chip form). . . . . . . . . . . . . . . . . . . . . . . . . 4

897 Tracealloy A (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

899 Tracealloy C (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

909c Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,24

911c Cholesterol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

912b Urea-Clinical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

913b Uric Acid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

914b Creatinine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Numerical Index

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

109

SRM Description Page #

915b Calcium Carbonate (Clinical Standard). . . . . . . . . . . . . . . . . . . . . . 20

916b Bilirubin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

917c D-Glucose (Dextrose). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,20

918c Potassium Chloride (Clinical). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

919b Sodium Chloride (Clinical). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

920 D-Mannitol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

921a Cortisol (Hydrocortisone). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

924a Lithium Carbonate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

927f Bovine Serum Albumin 

 (7 %, solution)(Total Protein Solution). . . . . . . . . . . . . . . . . . . 20,24

928 Lead Nitrate (Clinical). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

929a Magnesium Gluconate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

931h Liquid Absorbance Filters, UV-VIS. . . . . . . . . . . . . . . . . . . . . . . . . . . 76

937 Iron Metal (Clinical Standard). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

951a Boric Acid Isotopic Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

952 Enriched Boric Acid Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

953 Neutron Density Monitor Wire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

955d Toxic Metals and Metabolites in Frozen Human Blood. . . . . . . 20

956d Electrolytes in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . 20,24

965b Glucose in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . . . 20,24

967a Creatinine in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . 20,24

968f Fat-Soluble Vitamins, Carotenoids, 

 and Cholesterol in Human Serum. . . . . . . . . . . . . . . . . . . . 20,23,24

971a Hormones in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . 20,24

972a Vitamin D Metabolites in Frozen Human Serum. . . . . . . 20,23,24

973 Boric Acid Acidimetric Standard. . . . . . . . . . . . . . . . . . . . . . . . . 14,16

975a Isotopic Standard for Chlorine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

977 Isotopic Standard for Bromine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

978a Assay-Isotopic Standard for Silver. . . . . . . . . . . . . . . . . . . . . . . . . . . 16

979 Chromium Isotopic Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

980 Isotopic Standard for Magnesium. . . . . . . . . . . . . . . . . . . . . . . . . . . 16

981 Common Lead Isotopic Standard (wire). . . . . . . . . . . . . . . . . . . . . 16

982 Equal-Atom Lead Isotopic Standard (wire). . . . . . . . . . . . . . . . . . . 16

983 Radiogenic Lead Isotopic Standard (wire). . . . . . . . . . . . . . . . . . . 16

984 Rubidium Chloride. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

986 Isotopic Standard for Nickel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

987 Strontium Carbonate Isotopic Standard. . . . . . . . . . . . . . . . . . . . . 16

994 Isotopic Standard for Gallium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

997 Thallium Isotopic Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

998 Angiotensin I (Human). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

999c Potassium Chloride Primary Standard. . . . . . . . . . . . . . . . . . . . . . . 14

1003c Glass Beads - Particle Size Distribution 

 (20 μm to 50 μm diameter range). . . . . . . . . . . . . . . . . . . . . . . . . . 94

1010a Microcopy Resolution Test Charts. . . . . . . . . . . . . . . . . . . . . . . . . . . 77

1012 Flooring Radiant Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

1017b Glass Beads - Particle Size Distribution 

(100 μm to 400 μm diameter range). . . . . . . . . . . . . . . . . . . . . . . . . 94

1019b Glass Beads - Particle Size Distribution 

 (750 μm to 2450 μm diameter range). . . . . . . . . . . . . . . . . . . . . . 94

1021 Glass Beads - Particle Size Distribution 

 (2 μm to 12 μm diameter range). . . . . . . . . . . . . . . . . . . . . . . . . . . 94

1034 Unalloyed Copper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1035 Leaded-Tin Bronze Alloy (chip form). . . . . . . . . . . . . . . . . . . . . . . . . 8

1082 Cigarette Ignition Strength Standard (200 cigarettes). . . . . . 100

1085c Wear Metals in Lubricating Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

1089† Steels, Set 

 (consists of SRMs 1095, 1096, 1097, 1098 and 1099). . . . . . . . . 5

1090 Oxygen in Ingot Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1091a Oxygen in Stainless Steel (AISI 431). . . . . . . . . . . . . . . . . . . . . . . . . . 5

1093 Oxygen in Valve Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SRM Description Page #

1094 Oxygen in Maraging Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1107 Naval Brass UNS 46400. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1110 Red Brass B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1111 Red Brass Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1112 Gilding Metal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1113 Gilding Metal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1114 Gilding Metal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1115 Commercial Bronze Standard for OpticalEmission 

 and X-ray Spectroscopic Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C1115 Commercial Bronze A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1116 Commercial Bronze Standard for Optical Emission 

 and X-ray Spectroscopic Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1117 Commercial Bronze Standard for Optical Emission 

 and X-ray Spectroscopic Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C1117 Commercial Bronze C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1124 Free Cutting Brass (UNS C36000). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1128 Titanium-Base Alloy (15V-3Al-3Cr-3Sn). . . . . . . . . . . . . . . . . . . . . . 10

1129 Solder (63Sn—37Pb). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1131 Solder (40Sn—60Pb). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1132 Lead-Base Bearing Metal (84Pb-10Sb-6Sn). . . . . . . . . . . . . . . . . . . 9

1134 Low-Alloy High-Silicon Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1135 LA Steel, High Silicon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

C1137a White Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1138a Cast Steel Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

C1145a White Cast Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

C1151a Stainless Steel, 23Cr-7Ni. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

C1152a Stainless Steel, 18Cr-11Ni. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

C1153a Stainless Steel, 17Cr-9Ni. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

C1154a Stainless Steel, 19Cr-13Ni. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1155a Stainless Steel, Cr 18 Ni 12 Mo 2 (AISI 316). . . . . . . . . . . . . . . . . . . . 4

1157 Tool Steel (AISI M2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1158 High-Nickel Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

 (Nominal Mass Fraction 36 % Ni) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1159 Electronic and Magnetic Alloy Standard. . . . . . . . . . . . . . . . . . . . . . 9

1160 Electronic and Magnetic Alloy Standard . . . . . . . . . . . . . . . . . . . . . 9

1171 Stainless Steel, Cr 17-Ni 11-Ti 0.3 (AISI 321). . . . . . . . . . . . . . . . . . . 4

1172 Stainless Steel, Cr 17-Ni 11-Nb 0.6 (AISI 348). . . . . . . . . . . . . . . . . . 4

1173 Ni-Cr-Mo-V Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

C1173 Cast Steel 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1196a Standard Cigarette for Ignition 

 Resistance Testing (400 cigarettes). . . . . . . . . . . . . . . . . . . . . . . 100

1218 LA Steel, High Silicon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1219 Stainless Steel, Cr16 - Ni2 (AISI 431) (disk form). . . . . . . . . . . . . . . 4

1223 Chromium Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1224 LA Steel, Carbon (AISI 1078). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1225 LA Steel (AISI 4130). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1226 LA Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1227 LA Steel, Basic Open Hearth, 1 % C. . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1228 LA Steel, 0.1 % C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1230 High-Temperature Alloy A286 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1240c Aluminum Alloy 3004. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1241c Aluminum Alloy 5182. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1242 High Temperature Alloy L 605. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1243 Ni-Cr-Co Alloy UNS N07001. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1244 Nickel Alloy UNS N06600. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1246 Incoloy 800. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1247 Ni-Fe-Cr Alloy UNS N08825 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

C1248 Nickel-Copper Alloy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1249 Ni-Cr-Fe-Nb-Mo Alloy UNS N077178. . . . . . . . . . . . . . . . . . . . . . . . . 9

1250 High-Temperature Alloy Fe-Ni-Co. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
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C1251a Phosphorus Deoxidized Copper - Cu VIII. . . . . . . . . . . . . . . . . . . 8,9

C1252a Phosphorus Deoxidized Copper - Cu IX. . . . . . . . . . . . . . . . . . . . .8,9

C1253a Phosphorus Deoxidized Copper - Cu X. . . . . . . . . . . . . . . . . . . . . . . 9

1255b Aluminum Alloy 356. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1256b Aluminum Alloy 380. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1258-I Aluminum Alloy 6011 (Modified). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1259 Aluminum Alloy 7075. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1264a LA Steel, High Carbon (Modified). . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1265a Electrolytic Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1269 Line Pipe (AISI 1526 Modified). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1270 LA Steel, Cr-Mo (A336) (F-22). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1271 LA Steel (HSLA-100). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

C1285 LA Steel (A242) (Modified). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1286 Low Alloy Steel (HY 80). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

C1290 High-Alloy White Cast Iron (HC-250+V). . . . . . . . . . . . . . . . . . . . . . . 5

C1291 High-Alloy White Cast Iron (Ni-Hard, Type I). . . . . . . . . . . . . . . . . . 5

C1292 High-Alloy White Cast Iron I (Ni-Hard, Type IV). . . . . . . . . . . . . . . . 5

1295 Stainless Steel (SAE 405). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

C1296 Stainless Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1297 Stainless Steel (SAE 201). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1400 Bone Ash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1401 Trace Metals in Frozen Human Blood. . . . . . . . . . . . . . . . . . . . . 20,24

1411 Soft Borosilicate Glass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

1412a Multicomponent Glass (disk). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

1413 High Alumina Sand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54,58

1416 Aluminosilicate Glass for Liquidus Temperature. . . . . . . . . . . . . 90

1450e Thermal Conductivity - Fibrous Glass Board. . . . . . . . . . . . . . . . . 73

1452 Thermal Resistance - Fibrous Glass Blanket 

 for High-Precision Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . 73

1453 Thermal Conductivity -Expanded Polystyrene Board. . . . . . . . . 73

1459 Thermal Resistance - Fumed Silica Board. . . . . . . . . . . . . . . . . . . . 73

1473c Low Density Polyethylene Resin. . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

1474b Polyethylene Resin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

1475a Polyethylene, Linear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

1476a Branched Polyethylene Resin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

1478 Polystyrene (Narrow Molecular Weight Distribution). . . . . . . . . 70

1479 Polystyrene (Narrow Molecular Weight Distribution). . . . . . . . . 70

1482a Linear Polyethylene Narrow Molecular Mass Distribution

 (Nominal Mass-Average Molar Mass of 13 600 g/mol). . . . . . . 70

1483a Linear Polyethylene Narrow Molecular Mass Distribution 

 (Nominal Mass-Average Molar Mass of 32 100 g/mol). . . . . . . 70

1484a Linear Polyethylene. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

1486 Bone Meal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1488 Poly (Methyl Methacrylate) 

 (29 K Narrow Molecular Weight Distribution). . . . . . . . . . . . . . . 70

1491a Methyl-Substituted Polycyclic Aromatic . . . . . . . . . . . . . . . . . . . . 44

 Hydrocarbons in Toluene. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1493 Polychlorinated Biphenyl Congeners . . . . . . . . . . . . . . . . . . . . . . . 44

 in 2,2,4-Trimethylpentane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1494 Aliphatic Hydrocarbons in 2,2,4-Trimethylpentane. . . . . . . . . . . 44

1496 Unpigmented Polyethylene Gas Pipe Resin. . . . . . . . . . . . . . . . . . 70

1507b 11-Nor-Delta-9-Tetrahydrocannabinol-9-Carboxylic Acid 

 in Freeze-Dried Urine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,24,64

1514 Thermal Analysis Purity Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

1515 Apple Leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1543 GC/MS System Performance Standard. . . . . . . . . . . . . . . . . . . . . . 44

1546a Meat Homogenate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1547 Peach Leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1548b Typical Diet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

1549a Whole Milk Powder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

SRM Description Page #

1565 Mycotoxins in Corn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1566b Oyster Tissue. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

1567b Wheat Flour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1568b Rice Flour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1570a Trace Elements in Spinach Leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1570a Trace Elements in Spinach Leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1573a Tomato Leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1575a Trace Elements in Pine Needles (Pinus taeda). . . . . . . . . . . . . . . . 49

1577c Bovine Liver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1588c Organics in Fish Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1595 Tripalmitin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

1598a Inorganic Constituents in Animal Serum. . . . . . . . . . . . . . . . . . . . 20

1616b Sulfur in Kerosene (Low Level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

1617b Sulfur in Kerosine (High Level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

1619b Sulfur in Residual Fuel Oil (Nominal Mass Fraction 0.7 %). . . . 41

1622e Sulfur in Residual Fuel Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

 (Nominal Mass Fraction 2 %). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

1623d Sulfur in Residual Fuel Oil (Nominal Mass Fraction 0.2 %). . . . 41

1624d Sulfur in Diesel Fuel Oil (Nominal Mass Fraction 0.4 %). . . . . . . 41

1632e Trace Elements in Coal (Bituminous). . . . . . . . . . . . . . . . . . 31,40,42

1633c Trace Elements in Coal Fly Ash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1634c Trace Elements in Fuel Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

1635a Trace Elements in Coal (Subbitumimous). . . . . . . . . . . . . . . . . 40,42

1640a Trace Elements in Natural Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1641e Mercury in Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1643f Trace Elements in Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1646a Estuarine Sediment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1646a Estuarine Sediment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

1647f Priority Pollutant Polycyclic Aromatic 

 Hydrocarbons in Acetonitrile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1648a Urban Particulate Matter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,28,30

1649b Urban Dust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,44

1650b Diesel Particulate Matter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,44

1657 Synthetic Refuse-Derived Fuel 

 Combustion Calorimetric Standard. . . . . . . . . . . . . . . . . . . . . . . . 72

1658a Methane in Air 

 (Nominal Amount-of-Substance Fraction 1 μmol/mol). . . . . . 36

1659a Methane in Air 

 (Nominal Amount-of-Substance Fraction 10 μmol/mol). . . . 36

1661a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 500 μmol/mol). . . 37

1662a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1000 μmol/mol). . . . . 37

1663a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1500 μmol/mol). . . . . 37

1664a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 2500 μmol/mol). . . . . 37

1665b Propane in Air 

 (Nominal Amount-of-Substance Fraction 3 μmol/mol). . . . . . 36

1666b Propane in Air 

 (Nominal Amount-of-Substance Fraction 10 μmol/mol). . . . 36

1667b Propane in Air 

 (Nominal Amount-of-Substance Fraction 50 μmol/mol). . . . 36

1668b Propane in Air 

 (Nominal Amount-of-Substance Fraction 100 μmol/mol). . . 36

1669b Propane in Air 

 (Nominal Amount-of-Substance Fraction 500 μmol/mol). . . 36

1674b Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 7 % mol/mol). . . . . 35

1677c Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 10 μmol/mol). . . . 34
Numerical Index

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SRM Description Page #

1678c Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 50 μmol/mol). . . . 34

1679c Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 100 μmol/mol). . . 34

1680b Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 500 μmol/mol). . . 34

1681b Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1000 μmol/mol). . 34

1683b Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 50 μmol/mol). . . . 36

1684b Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 100 μmol/mol). . . 36

1685b Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 250 μmol/mol). . . 36

1686b Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 500 μmol/mol). . . 36

1687b Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1000 μmol/mol). . 36

1689 Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 5 μmol/mol). . . . . . 37

1690 Polystyrene Spheres (1 μm Diameter Particle Size). . . . . . . . . . . 94

1691 Polystyrene Spheres (0.3 μm Diameter Particle Size). . . . . . . . . 94

1693a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 50 μmol/mol). . . . 37

1694a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 100 μmol/mol). . . 37

1696a Sulfur Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 3500 μmol/mol). . . . . 37

1718 Nitrous Oxide in Air 

 (Nominal Amount-of-Substance Fraction 1 μmol/mol). . . . . . 36

1720 Northern Continental Air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

1721 Southern Oceanic Air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

1722 Halocarbons in Continental Air 

 (Nominal Amount-of-Substance Fraction - Ambient). . . . . . . 35

1727 Anode Tin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1728 Tin Alloy (Sn-3Cu-0.5Ag). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1729 Tin Alloy (97Sn-3Pb). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1738 Zinc-Aluminum Alloy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1740 Zinc-Aluminum Alloy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1741 Zinc-Aluminum Alloy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1749 Gold versus Platinum Thermocouple Certified 

 Thermometer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

1755 Nitrogen in Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1761a Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1762b Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1763b Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1764a Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1765 Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1766 Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1767 Low Alloy Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1768 High-Purity Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1772 Tool Steel (S-7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1775 Refractory Alloy MP-35-N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1775 Refractory Alloy MP-35-N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1810a Linerboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

1818a Chlorine in Lubricating Base Oils. . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

1819a Sulfur in Lubricating Base Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

1828c Ethanol-Water Solutions (six levels). . . . . . . . . . . . . . . . . . . . . . . . . 64

1828c Ethanol-Water Solutions (Nominal Mass Fractions of 0.02 %, 

 0.04 %, 0.08 %, 0.1 %, 0.2 %, and 0.3 %,). . . . . . . . . . . . . . . . . . . . 21

1830 Soda-Lime Float Glass (Nominal Mass Fraction 0.1 % Al2O3). . 58

SRM Description Page #

1831 Soda-Lime Sheet Glass (Nominal Mass Fraction 1.2 % Al2O3) 58

1835 Borate Ore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

1845a Whole Egg Powder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1848 Lubricating Oil Additive Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

1849a Infant/Adult Nutritional Formula I (milk-based). . . . . . . . . . . 48,49

1857 Tool Steel for Abrasive Wear Standard. . . . . . . . . . . . . . . . . . . . . . . 98

1869 Infant/Adult Nutritional Formula II 

 (milk/whey/soy-based). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

1877 Beryllium Oxide Powder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1878b Respirable Alpha Quartz 

(Quantitative X-Ray Powder Diffraction Standard). . . . . . . . 25,92

1879b Respirable Cristobalite 

 (Quantitative X-Ray Powder Diffraction Standard) . . . . . . . 25,92

1880b Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1881b Portland Cement (Blended with Fly Ash). . . . . . . . . . . . . . . . . . . . 60

1882a Calcium Aluminate Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1883a Calcium Aluminate Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1884b Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1885b Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1886a Portland Cement (White Portland Cement with Low Iron). . . . 60

1887b Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1888b Portland Cement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

1889b Portland Cement (Blended with Limestone). . . . . . . . . . . . . . . . . 60

1893 Copper Microhardness Test Block (Knoop). . . . . . . . . . . . . . . . . . . 98

1894a Vickers Microhardness of Copper. . . . . . . . . . . . . . . . . . . . . . . . . . . 98

1895 Nickel Microhardness Test Block (Knoop). . . . . . . . . . . . . . . . . . . . 98

1896b Vickers Microhardness of Nickel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

1898 Titanium Dioxide Nanomaterial. . . . . . . . . . . . . . . . . . . . . . . . 95,102

1900 Specific Surface Area Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

1905 Nickel Microhardness Test Block (Knoop). . . . . . . . . . . . . . . . . . . . 98

1906 Nickel Microhardness Test Block (Knoop). . . . . . . . . . . . . . . . . . . . 98

1907 Nickel Microhardness Test Block (Knoop). . . . . . . . . . . . . . . . . . . . 98

1908 Vickers Microhardness of Nickel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

1909 Vickers Microhardness of Nickel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

1917 Mercury Porosimetry Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

1921b IR Transmission Wavelength/Wavenumber 

 Standard (Polystyrene Film). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

1928 Infrared Specular High Reflectance Standard 

 (Nominal Diameter 51 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

1929 Infrared High Reflectance Specular Standard 

 (Nominal Diameter 25 mm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

1932 Fluorescein Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

1934 Fluorescent Dyes for Quantitative Flow Cytometry 

 (Visible Spectral Range). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

1936 Great Lakes Sediment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44,45

1941b Organics in Marine Sediment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1944 New York/New Jersey Waterway Sediment. . . . . . . . . 30,31,44,55

1945 Organics in Whale Blubber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1946 Lake Superior Fish Tissue. . . . . . . . . . . . . . . . . . . . . . . 30,44,45,48,49

1947 Lake Michigan Fish Tissue. . . . . . . . . . . . . . . . . . . . . . 30,44,45,48,49

1949 Frozen Human Prenatal Serum. . . . . . . . . . . . . . . . . . . . . . . . 20,23,24

1950 Metabolites in Frozen Human Plasma. . . . . . . . . . . . . . 20,23,24,45

1951c Lipids in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . . . . . 20,24

1953 Organic Contaminants in Non-Fortified Human Milk. . . . . . 44,49

1954 Organic Contaminants in Fortified Human Milk. . . . . . . . . . . 44,49

1955 Homocysteine and Folate in Frozen Human Serum . . . . . . . 20,24

1957 Organic Contaminants in Non-Fortified Human Serum

 (Freeze Dried). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24,44,45

1958 Organic Contaminants in Fortified Human Serum 

 (Freeze-Dried). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24,44,45
Numerical Index

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SRM Description Page #

1961 Polystyrene Spheres (30 μm Diameter Particle Size). . . . . . . . . . 94

1963a Polystyrene Spheres (100 nm Diameter Particle Size). . . 94,102

1964 Polystyrene Spheres (60 nm Diameter Particle Size) . . . . 94,102

1967a High-Purity Platinum Thermoelement(platinum wire). . . . . . . 73

1972 1,3-Dioxolan-2-one Triple Point Standard. . . . . . . . . . . . . . . . . . . 73

1974c Organics in Mussel Tissue (Mytilus edulis). . . . . . . . . . . . . . . . . . 44

1975 Diesel Particulate Extract. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1975 Diesel Particulate Extract. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1976c Instrument Response Standard for X-Ray Powder Diffraction92

1978 Particles Size Distribution Standard

 for Gravity Sedimentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

1979 Powder Diffraction Line Profile Standard for Crystallite Size 

 Analysis (Nano-Crystalline ZnO Powder). . . . . . . . . . . . . . . . . . . 92

1980 Positive Electrophoretic (+μE) Mobility Standard 

 (500 mg/L). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

1984 Thermal Spray Powder - Particle Size

 Distribution Tungsten Carbide/Cobalt (Acicular). . . . . . . . . . . . 94

1985 Thermal Spray Powder - Particle Size

 Distribution Tungsten Carbide/Cobalt (Spheroidal). . . . . . . . . 94

1990 Single Crystal Diffractometer Alignment 

 Standard - Ruby Sphere. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

1991 Mix Coal Tar/Petroleum Extract in Methylene Chloride. . . . . . . 44

1992 Zeta Potential - Colloidal Silica

 (Nominal Mass Fraction 0.15 %). . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

1993 Zeta Potential – Colloidal Silica. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

 (Nominal Mass Fraction 2.2 %). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2000 Calibration Standard for High-Resolution X-Ray Diffraction. . . . . 92

2031c Metal-on-Fused-Silica Neutral Density 

 Filters (250 nm to 635 nm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

2034 Holmium Oxide Solution Wavelength . . . . . . . . . . . . . . . . . . . . . . 76

 Standard from 240 nm to 650 nm. . . . . . . . . . . . . . . . . . . . . . . . . . 76

2035b Ultraviolet-Visible-Near-Infrared . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

 Wavelength/Wavenumber Transmission Standard. . . . . . . . . . 76

2036 Near Infrared Wavelength/Wavenumber 

 Reflection Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

2036 Near Infrared Wavelength/Wavenumber Reflection Standard. . . 76

2061 TiAl(NbW) Alloy for Microanalysis. . . . . . . . . . . . . . . . . . . . . . . . 10,12

2066 K-411 Glass Microspheres. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2073a Sinusoidal Roughness Specimen. . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2092 Low-Energy Charpy V-Notch Specimens 

 (NIST-Verification, 8-mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . 104

2093 Low-Energy Charpy V-Notch Specimens 

 (Self-Verification, 8-mm Striker) . . . . . . . . . . . . . . . . . . . . . . . . . 104

2096 High-Energy Charpy V-Notch Specimens 

 (NIST-Verification, 8-mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . 104

2097 High-Energy Charpy V-Notch Specimens 

 (Self-Verification, 8-mm Striker) . . . . . . . . . . . . . . . . . . . . . . . . . 104

2098 Super-High-Energy Charpy V-Notch Specimens 

 (NIST-Verification, 8-mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . 104

2099 Super-High-Energy Charpy V-Notch Specimens 

 (Self-Verification, 8 mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . . 104

2100a Fracture Toughness of Ceramic. . . . . . . . . . . . . . . . . . . . . . . . . . . 106

2100b Fracture Toughness of Ceramic. . . . . . . . . . . . . . . . . . . . . . . . . . . 106

2112 Dynamic Impact Force Verification Specimens 

 (Self-Verification, 8-mm Striker, 24 kN nominal). . . . . . . . . . . 104

2113 Dynamic Impact Force Verification Specimens 

 (Self-Verification, 8-mm Striker, 33 kN nominal). . . . . . . . . . . 104

2133 Phosphorus Implant in Silicon Depth Profile Standard. . . . . . . 86

2134 Arsenic Implant in Silicon Depth Profile Standard. . . . . . . . . . . . 86

2135c Ni/Cr Thin Film Depth Profile Standard. . . . . . . . . . . . . . . . . . . . . . 86

SRM Description Page #

2137 Boron Implant in Silicon Standard

 for Calibration of Concentration in a Depth Profile. . . . . . . . . . 86

2139 Zinc-Aluminum Alloy (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2141 Urea. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2143 p-Fluorobenzoic Acid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2144 m-Chlorobenzoic Acid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2152 Urea Combustion Calorimetric Standard. . . . . . . . . . . . . . . . . . . . 72

2160 Low-Alloy Steel (pin form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2161 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2162 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2163 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2164 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2165 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2166 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2167 Low Alloy Steel (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2168 High-Purity Iron (chip form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2171 LA Steel, (HSLA 100). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2175 Refractory Alloy MP-35-N (chip form). . . . . . . . . . . . . . . . . . . . . . 8,9

2185 Potassium Hydrogen Phthalate pD Standard. . . . . . . . . . . . . . . . 68

2186I Potassium Dihydrogen Phosphate. . . . . . . . . . . . . . . . . . . . . . . . . . 68

2186II Disodium Hydrogen Phosphate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2191a Sodium Bicarbonate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2192a Sodium Carbonate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2193a Calcium Carbonate[used as saturated Ca(OH)2 solution]. . . . . 68

2197 Low-Energy Charpy V-Notch Specimens 

 (Self-Verification, 2-mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . . 104

2198 High-Energy Charpy V-Notch Specimens 

 (Self-Verification, 2-mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . . 104

2199 Super-High-Energy Charpy V-Notch Specimens 

 (Self-Verification, 2 mm Striker). . . . . . . . . . . . . . . . . . . . . . . . . . 104

2201 Sodium Chloride (Ion-Selective). . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

2203 Potassium Fluoride (Standard for Ion-Selective Electrodes). . 68

2206 Controlled Pore Glass - BET Specific Surface Area 

 (Nominal Pore Diameter 300 nm) . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2207 Controlled Pore Glass - BET Specific Surface Area . . . . . . . . . . . 95

 (Nominal Pore Diameter 18 nm). . . . . . . . . . . . . . . . . . . . . . . . . . . 95

2214 Isooctane Liquid Density. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

2216 Miniaturized Low-Energy Charpy V-Notch KLST Specimens 

 (Self-Verification). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

2218 Miniaturized High-Energy Charpy V-Notch KLST Specimens 

 (Self-Verification). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

2219 Miniaturized Super-High-Energy Charpy V-Notch 

 KLST Specimens (Self-Verification). . . . . . . . . . . . . . . . . . . . . . . 104

2232 Indium DSC Calibration Standard - Temperature 

 and Enthalpy of Fusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2234 Gallium for Thermal Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2235 Bismuth for Thermal Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

2237 Miniaturized Low-Energy Charpy V-Notch RHS 

 Specimens (Self-Verification). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

2238 Miniaturized High-Energy Charpy V-Notch RHS Specimens 

 (Self-Verification). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

2239 Miniaturized Super-High-Energy Charpy V-Notch RHS 

 Specimens (Self-Verification). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

2241 Relative Intensity Correction Standard 

 for Raman Spectroscopy: 785 nm Excitation. . . . . . . . . . . . . . . . 77

2242a Relative Intensity Correction Standard 

 for Raman Spectroscopy: 532 nm Excitation. . . . . . . . . . . . . . . . 77

2244 Relative Intensity Correction Standard 

 for Raman Spectroscopy: 1064 nm Excitation. . . . . . . . . . . . . . . 77

2246 Relative Intensity Correction Standard 

 for Raman Spectroscopy: 830 nm Excitation. . . . . . . . . . . . . . . . 77
Numerical Index

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SRM Description Page #

2257 PBDE Congeners in 2,2,4-Trimethylpentane. . . . . . . . . . . . . . . . . 44

2258 BDE 209 in 2,2,4-Trimethylpentane. . . . . . . . . . . . . . . . . . . . . . . . . . 44

2259 PCB Congeners in 2,2,4-Trimethylpentane. . . . . . . . . . . . . . . . . . . 44

2260a Aromatic Hydrocarbon in Toluene. . . . . . . . . . . . . . . . . . . . . . . . . . 44

2261 Chlorinated Pesticides in Hexane 

 (Nominal Mass Concentration 2 μg/mL). . . . . . . . . . . . . . . . . . . . 44

2262 Chlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane 

 (Nominal Mass Concentration 2 μg/mL). . . . . . . . . . . . . . . . . . . . 44

2266 Hopanes and Steranes in 2,2,4 Trimethylpentane. . . . . . . . . . . . 44

2269 Perdeuterated PAH-I Solution in Hexane/Toluene. . . . . . . . . . . . 44

2270 Perdeuterated PAH-II Solution in Hexane/Toluene. . . . . . . . . . . 44

2274 PCB Congeners in 2,2,4-Trimethylpentane . . . . . . . . . . . . . . . . . . 44

2275 Chlorinated Pesticide Solution-II in 2,2,4-Trimethylpentane. . . . . 44

2294 Reformulated Gasoline (Nominal Mass Fraction 11 % MTBE). . . . 40

2295 Reformulated Gasoline (Nominal Mass Fraction 15 % MTBE). . . . 40

2296 Reformulated Gasoline (Nominal Mass Fraction 13 % ETBE). . . 40

2298 Sulfur in Gasoline (High-Octane). . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2299 Sulfur in Gasoline (Reformulated). . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2365 BK Virus DNA Quantitative Standard. . . . . . . . . . . . . . . . . . . . . . . . 65

2365 BK Virus DNA Quantitative Standard. . . . . . . . . . . . . . . . . . . . . . . . 27

2365 BK Virus DNA Quantitative Standard. . . . . . . . . . . . . . . . . . . . . . . . 20

2366a Cytomegalovirus DNA (Towne∆147BAC) 

 for DNA Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2366a Cytomegalovirus DNA (TowneΔ147 BAC) 

 or DNA Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2366a Cytomegalovirus DNA (TowneΔ147 BAC) 

 for DNA Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

2367 JC Virus DNA Quantitative Standard. . . . . . . . . . . . . . . . . . . . . . . . . 27

2372a Human DNA Quantitation Standard. . . . . . . . . . . . . . . . . . . . . . 27,65

2373 Genomic DNA Standards for HER2 Measurements. . . . . . . . 27,65

2374 DNA Sequence Library for External RNA Controls. . . . . . . . . 27,65

2378 Fatty Acids in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . 20,24

2383a Baby Food Composite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2384 Baking Chocolate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2385 Slurried Spinach. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,48

2386 Avocado Powder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

2387 Peanut Butter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,48,49

2389a Amino Acids in 0.1 mol/L Hydrochloric Acid. . . . . . . . . . . . . . . . . 20

2391d PCR-Based DNA Profiling Standard. . . . . . . . . . . . . . . . . . . . . . . 27,65

2392 Mitochondrial DNA Sequencing. . . . . . . . . . . . . . . . . . . . . . . . . 27,65

2393 CAG Repeat Length Mutation in Huntington’s Disease. . . . 27,65

2396 Oxidative DNA Damage Mass Spectrometry Standards. . . 27,65

C2400 Fe-Cr-Ni Alloy UNS J92180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

C2415a Battery Lead (UNS 52770). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C2416 Bullet Lead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C2417 Lead-Base Alloy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C2418 High-Purity Lead. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

C2424 Ductile Iron C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

(QTY 10) Human DNA for Whole-Genome Variant Assessment 

 (Daughter of Utah/European Ancestry) (HG-001). . . . . . . . . . . 27

2426 55 % Aluminum-Zinc Alloy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2429 Flue Gas Desulfurization Gypsum. . . . . . . . . . . . . . . . . . 42,50,54,60

2430 Scheelite Ore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

2431 Titanium-Base Alloy (6Al-2Sn-4Zr-6Mo)(chip form). . . . . . . . . . 10

2432 Titanium-Base Alloy (10V-2Fe-3Al) (chip form). . . . . . . . . . . . . . . 10

2433 Titanium-Base Alloy (8Al-1Mo-1V) (chip form). . . . . . . . . . . . . . . 10

2445 Mercury in Iodinated Activated Carbon. . . . . . . . . . . . . . . . . . . . . 30

2448 Mercury in Brominated Activated Carbon. . . . . . . . . . . . . . . . . . . 30

2451 Fine Carbon (Activated) - From Cyanide Ore Leaching. . . . . . . 30

2452 Hydrogen In Titanium Alloy 

 (Nominal Mass Fraction 60 mg/kg H) (chip form). . . . . . . . . . . 10

SRM Description Page #

2453a Hydrogen In Titanium Alloy 

 (Nominal Mass Fraction 125 mg/kg H) (pin form). . . . . . . . . . . 10

2454a Hydrogen In Titanium Alloy 

(Nominal Mass Fraction 200 mg/kg H) (chip form). . . . . . . . . . . 10

2460a Standard Bullet Replica. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45,64,106

2461 Standard Cartridge Case. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45,64,106

2492 Bingham Paste Mixture for Rheological Measurements. . . . . . 70

2493 Bingham Mortar Mixture for Rheological Measurements. . . . . 70

2497 Bingham Concrete Mixture for Rheological Measurements. . . . 70

2556 Used Auto Catalyst (Pellets). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2557 Used Auto Catalyst (Monolith). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2569 Lead Paint Films for Children’s Products. . . . . . . . . . . . . . . . . . . . . 28

2570 Lead Paint Film for Portable X-Ray

 Fluorescence Analyzers - Blank (Color: White). . . . . . . . . . . . . . . 28

2571 Lead Paint Film for Building Surfaces

 (Nominal Pb 3.5 mg/cm2)(Color: Yellow). . . . . . . . . . . . . . . . . . . 28

2572 Lead Paint Film for Building Surfaces

 (Nominal Pb 1.6 mg/cm2)(Color: Orange). . . . . . . . . . . . . . . . . . 28

2573 Lead Paint Film for Building Surfaces

 (Nominal Pb 1.0 mg/cm2)(Color: Red). . . . . . . . . . . . . . . . . . . . . . 28

2574 Lead Paint Film for Building Surfaces

 (Nominal Pb 0.7 mg/cm2)(Color: Gold). . . . . . . . . . . . . . . . . . . . . 28

2575 Lead Paint Film for Building Surfaces

 (Nominal Pb 0.3 mg/cm2)(Color: Green). . . . . . . . . . . . . . . . . . . . 28

2576 Lead Paint Film for Building Surfaces

 (Nominal Pb 5.6 mg/cm2)(Color: Blue). . . . . . . . . . . . . . . . . . . . . 28

2579a Lead Paint Films For Building Surfaces 

 (SRM 2570 through SRM 2575). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2580 Powdered Paint (Nominal Mass Fraction 4 % Lead). . . . . . . . . . 28

2581 Powdered Paint (Nominal Mass Fraction 0.5 % Lead). . . . . . . . . 28

2582 Powdered Paint (Nominal Mass Fraction 200 mg/kg Lead). . . 28

2583 Trace Elements in Indoor Dust 

 (Nominal Mass Fraction of 90 mg/kg Lead). . . . . . . . . . . . . . . . . 25

2583 Trace Elements in Indoor Dust 

 (Nominal Mass Fraction of 90 mg/kg Lead). . . . . . . . . . . . . . . . . 28

2583 Trace Elements in Indoor Dust 

 (Nominal Mass Fraction of 90 mg/kg Lead). . . . . . . . . . . . . . . . . 30

2584 Trace Elements in Indoor Dust 

 (Nominal Mass Fraction of 1% Lead). . . . . . . . . . . . . . . . . . . . . . . 25

2584 Trace Elements in Indoor Dust 

 (Nominal Mass Fraction of 1% Lead). . . . . . . . . . . . . . . . . . . . . . . 28

2584 Trace Elements in Indoor Dust 

 (Nominal Mass Fraction of 1 % Lead). . . . . . . . . . . . . . . . . . . . . . . 30

2585 Organic Contaminants in House Dust. . . . . . . . . . . . . . . . . . . . . . . 25

2585 Organic Contaminants in House Dust. . . . . . . . . . . . . . . . . . . . . . . 44

2585 Organic Contaminants in House Dust. . . . . . . . . . . . . . . . . . . . . . . 45

2586 Trace Elements in Soil Containing Lead From Paint 

 (Nominal Mass Fraction 500 mg/kg Lead). . . . . . . . . 28,30,45,55

2587 Trace Elements in Soil 

 (Nominal Mass Fraction of 3000 mg/kg Lead). . . . . . . . . 28,30,55

2589 Powdered Paint (Nominal Mass Fraction 10% Lead). . . . . . . . . . 28

2613a Carbon Monoxide in Air 

 (Nominal Amount-of-Substance Fraction 20 μmol/mol). . . . 34

2617 Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 500 μmol/mol). . . 35

2619a Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 0.5 % mol/mol). . . 35

2620a Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1 % mol/mol). . . . . 35

2621a Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1.5 % mol/mol). . . 35
Numerical Index

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114

SRM Description Page #

2622a Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 2 % mol/mol). . . . . 35

2624a Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 3 % mol/mol). . . . . 35

2625a Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 3.5 % mol/mol). . . 35

2627a Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 5 μmol/mol). . . . . . 36

2628a Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 10 μmol/mol). . . . 36

2629a Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 20 μmol/mol). . . . 36

2630 Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1500 μmol/mol). . 36

2631a Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 3000 μmol/mol). . 36

2635a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 25 μmol/mol). . . . 34

2636a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 250 μmol/mol). . . 34

2637a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 2500 μmol/mol). . 34

2638a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 5000 μmol/mol). . 34

2639a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1 % mol/mol). . . . . 34

2640a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 2 % mol/mol). . . . . 34

2641a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 4 % mol/mol). . . . . 34

2642a Carbon Monoxide in Nitrogen

 (Nominal Amount-of-Substance Fraction 8 % mol/mol). . . . . 34

2644a Propane in Nitrogen 

 (Nominal Amount-of-Substance Fraction 250 μmol/mol). . . 36

2647a Propane in Nitrogen 

 (Nominal Amount-of-Substance Fraction 2500 μmol/mol). . . 36

2657a Oxygen in Nitrogen 

 (Nominal Amount-of-Substance Fraction 2 % mol/mol). . . . . 37

2658a Oxygen in Nitrogen 

 (Nominal Amount-of-Substance Fraction 10 % mol/mol). . . 37

2659a Oxygen in Nitrogen 

 (Nominal Amount-of-Substance Fraction 21 % mol/mol). . . 37

2660a Total Oxides of Nitrogen (NOx) in Air 

 (Nominal Amount-of-Substance Fraction 100 μmol/mol). . . 36

2668 Toxic Elements in Frozen Human Urine. . . . . . . . . . . . . . . . 20,21,24

2669 Arsenic Species in Frozen Human Urine. . . . . . . . . . . . . . . 20,21,24

2682c Subbituminous Coal 

 (Nominal Mass Fraction 0.5 % Sulfur). . . . . . . . . . . . . . . . . . . . . . . 40

2683c Bituminous Coal (Nominal Mass Fraction 2 % Sulfur) . . . . . . . . 40

2684c Bituminous Coal (Nominal Mass Fraction 3 % Sulfur). . . . . . . . . 40

2685c Bituminous Coal (Nominal Mass Fraction 5 % Sulfur). . . . . . . . . 40

2686a Portland Cement Clinker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2687a Portland Cement Clinker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2688 Portland Cement Clinker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2689 Coal Fly Ash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42,95

2690 Coal Fly Ash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42,95

2691 Coal Fly Ash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42,95

2692c Bituminous Coal (Nominal Mass Fraction 1 % Sulfur). . . . . . . . . 40

2693 Bituminous Coal (Nominal Mass Fraction 0.5 % Sulfur). . . . . . . 40

2696 Silica Fume (powder form). . . . . . . . . . . . . . . . . . . . . . . . . 30,58,60,95

2700 Hexavalent Chromium in Contaminated Soil (Low Level). . . . 30,55

2701 Hexavalent Chromium in Contaminated Soil (High Level). . . 30,55

SRM Description Page #

2702 Inorganics in Marine Sediment. . . . . . . . . . . . . . . . . . . . . . . . . . 30,55

2703 Sediment for Solid Sampling (Small Sample) 

 Analytical Techniques. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,55

2706 New Jersey Soil, Organics and Trace Elements. . . . . . . . . . . . 30,44

2706 New Jersey Soil, Organics and Trace Elements. . . . . . . . . . . . . . . 55

2709a San Joaquin Soil Baseline Trace Element Concentrations. . . . 30,55

2710a Montana I Soil Highly Elevated Trace 

 Element Concentrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,55

2711a Montana II Soil Moderately Elevated Trace Element

 Concentrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,55

2717a Sulfur in Residual Fuel Oil (Nominal Mass Fraction 3 %). . . . . . 41

2718a Green Petroleum Coke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31,41,42

2719 Calcined Petroleum Coke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31,41,42

2720 Sulfur in Di-n-Butyl Sulfide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2721 Crude Oil (Light-Sour). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,42

2722 Crude Oil (Heavy Sweet). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40,42

2723b Sulfur in Diesel Fuel Oil (Nominal Mass Fraction 10 mg/kg). . . 41

2730 Hydrogen Sulfide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 5 μmol/mol). . . . . . 35

2731 Hydrogen Sulfide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 20 μmol/mol). . . . 35

2735 Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 800 μmol/mol). . . 36

2737 Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 500 nmol/mol). . . 36

2738 Nitric Oxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 1000 nmol/mol). . . 36

2740a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 10 % mol/mol). . . 34

2741a Carbon Monoxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 13 % mol/mol). . . 34

2745 Carbon Dioxide in Nitrogen 

 (Nominal Amount-of-Substance Fraction 16 % mol/mol). . . 35

2750 Methane in Air 

 (Nominal Amount-of-Substance Fraction 50 μmol/mol). . . . 36

2751 Methane in Air 

 (Nominal Amount-of-Substance Fraction 100 μmol/mol). . . 36

2764 Propane in Air 

 (Nominal Amount-of-Substance Fraction 0.25 μmol/mol). . . 36

2765 Propane in Air 

 (Nominal Amount-of-Substance Fraction 100 nmol/mol). . . 36

2770 Sulfur in Diesel Fuel Oil (Nominal Mass Fraction 40 mg/kg). . . 41

2771 Sulfur in Diesel Fuel Blend Stock. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2775 Sulfur in Foundry Coke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31,41

2776 Sulfur in Furnace Coke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31,31

2777 Weathered Gulf of Mexico Crude Oil in Toluene. . . . . . . . . . . . . . 44

2778 Mercury in Crude Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

2779 Gulf of Mexico Crude Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

2780a Hard Rock Mine Waste. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,54,55

2781 Domestic Sludge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,44,45,55

2782 Industrial Sludge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,55

2783 Air Particulate on Filter Media (47 mm dia). . . . . . . . . . . . 22,28,30

2786 Fine Atmospheric Particulate Matter

 (Mean Particle Diameter < 4 μm). . . . . . . . . . . . . . . . . . . . . . . . 25,44

2787 Fine Atmospheric Particulate Matter. . . . . . . . . . . . . . . . . . . . . . . . 25

 (Mean Particle Diameter < 10 μm). . . . . . . . . . . . . . . . . . . . . . 25,44

2790 Inorganic Constituents in Hardwood Biomass Material. . . . . . 42

2791 Inorganic Constituents in Softwood Biomass Material. . . . . . . 42

2798a Vickers Microhardness of Nickel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2806d Medium Test Dust (MTD) in Hydraulic Fluid. . . . . . . . . . . . . . . . . . 95
Numerical Index

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115

SRM Description Page #

2810 Rockwell C Hardness - Low Range. . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2811 Rockwell C Hardness - Mid Range. . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2812 Rockwell C Scale Hardness - High Range. . . . . . . . . . . . . . . . . . . . 98

2816 Rockwell Hardness 15N Scale - Low Range . . . . . . . . . . . . . . . . . . 98

 (Nominal 72 HR15N). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2817 Rockwell Hardness 15N Scale - Mid Range . . . . . . . . . . . . . . . . . . 98

 (Nominal 83 HR15N). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2818 Rockwell Hardness 15N Scale - High Range . . . . . . . . . . . . . . . . . 98

 (Nominal 91 HR15N). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2819 Rockwell Hardness 30N Scale - Low Range . . . . . . . . . . . . . . . . . . 98

 (Nominal 45 HR30N). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2820 Rockwell Hardness 30N Scale - Mid Range . . . . . . . . . . . . . . . . . . 98

 (Nominal 64 HR30N). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2821 Rockwell Hardness 30N Scale - High Range . . . . . . . . . . . . . . . . . 98

 (Nominal 79 HR30N). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2828 Knoop Microhardness of Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2829 Vickers Microhardness of Steel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2830 Knoop Hardness of Ceramics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

2831 Vickers Hardness of Ceramics and Hardmetals. . . . . . . . . . . . . . . 98

2841 Semiconductor Thin Film:  AlxGa1-xAs Epitaxial Layers 

 (Al mole fraction x near 0.20). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2842 Semiconductor Thin Film: AlxGa1-xAs Epitaxial Layers 

 (Al mole fraction x near 0.30). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2853 Magnetic Moment Standard - Yttrium Iron Garnet Sphere. . . . 106

2855 Additive Elements in Polyethylene. . . . . . . . . . . . . . . . . . . . . . . . . . 70

2859 Restricted Elements in Polyvinyl Chloride. . . . . . . . . . . . . . . . . . . 70

2860 Phthalates in Polyvinyl Chloride. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

2861 Restricted Elements in Polyvinyl Chloride. . . . . . . . . . . . . . . . . . . 70

2885 Polyethylene (Mass-Average Molar Mass [Mw] 6 280 g/mol). . . . 70

2886 Polyethylene (Mass-Average Molar Mass [Mw] 87 000 g/mol). . . 70

2887 Polyethylene (Mass-Average Molar Mass [Mw] 196 400 g/mol). . . 70

2890 Water Saturated 1-Octanol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

2891 Ethanol-Water Solution (Nominal Mass Fraction 0.02 %). . 21,64

2892 Ethanol-Water Solution (Nominal Mass Fraction 0.04 %). . 21,64

2893a Ethanol-Water Solution (Nominal Mass Fraction 0.08 %). . 21,64

2894 Ethanol-Water Solution (Nominal Mass Fraction 0.1 %). . . 21,64

2895 Ethanol-Water Solution (Nominal Mass Fraction 0.2 %). . . 21,64

2896 Ethanol-Water Solution (Nominal Mass Fraction 0.3 %). . . 21,64

2897a Ethanol Water Solution (Nominal Mass Fraction 2 %). . . . . 21,64

2898a Ethanol Water Solution (Nominal Mass Fraction 6 %). . . . . 21,64

2899a Ethanol-Water Solution (Nominal Mass Fraction 25 %). . . . 21,64

2900 Ethanol-Water Solution (Nominal Mass Fraction 95.6 %). . . 21,64

2910b Hydroxyapatite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2917 Plasmid DNA for Fecal Indicator Detection and Identification. . . 27

2921 Human Cardiac Troponin Complex. . . . . . . . . . . . . . . . . . . . . . . . . . 20

2924 C-Reactive Protein Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2925 Recombinant Human Serum Albumin Solution 

 (Primary Reference Calibrator for Urine Albumin) (Frozen). . . 20,24

2926 Recombinant Human Insulin-like 

 Growth Factor 1 (Frozen). . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,22,64

2927 15N-Labeled Recombinant Human Insulin-like 

 Growth Factor 1 (Frozen). . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,22,64

2940a Relative Intensity Correction Standard 

 for Fluorescence Spectroscopy:  Orange Emission. . . . . . . . . . 77

2941a Relative Intensity Correction Standard 

 for Fluorescence Spectroscopy:  Green Emission. . . . . . . . . . . . 77

2942 Relative Intensity Correction Standard . . . . . . . . . . . . . . . . . . . . . . 77

 for Fluorescence Spectroscopy:  Ultraviolet Emission. . . . . . . 77

2943 Relative Intensity Correction Standard . . . . . . . . . . . . . . . . . . . . . . 77

 for Fluorescence Spectroscopy:  Blue Emission. . . . . . . . . . . . . 77

SRM Description Page #

2944 Relative Intensity Correction Standard . . . . . . . . . . . . . . . . . . . . . . 77

 for Fluorescence Spectroscopy:  Red Emission. . . . . . . . . . . . . . 77

2950a Respirable Alpha Quartz on Filter Media . . . . . . . . . . . . . . . . . . . . 22

 (Nominal Mass of Alpha Quartz: 5 μg - 500 μg). . . . . . . . . . . . . 22

2960 Respirable Cristobalite on Filter Media . . . . . . . . . . . . . . . . . . . . . . 22

 (Nominal Mass of Cristobalite: 5 μg - 250 μg). . . . . . . . . . . . . . . 22

2968 3-Epi-25-Hydroxvitamin D3 Calibration Solution. . . . . . . . . 20,23

2969 Vitamin D Metabolites in Frozen Human Serum 

 (Total 25-Hydroxyvitamin D Low Level). . . . . . . . . . . . . . 20,23,24

2970 Vitamin D Metabolites in Frozen Human Serum 

 (25-Hydroxyvitamin D2 High Level). . . . . . . . . . . . . . . . . . 20,23,24

2971 24R,25-Dihydroxyvitamin D3 Calibration Solution. . . . . . . . 20,23

2972b 25-Hydroxyvitamin D Calibration Solutions. . . . . . . . . . . . . . 20,23

2973 Vitamin D Metabolites in Frozen Human Serum 

 (High Level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,23,24

2974a Organics in Freeze-Dried Mussel Tissue (Mytilus edulis). . . . . 44

2975 Diesel Particulate Matter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,44

2976 Trace Elements and Methylmercury in Mussel Tissue 

 (Freeze-Dried). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3030 Monomethylarsonic Acid Standard Solution. . . . . . . . . . 14,16,20

3031 Dimethylarsinic Acid Standard Solution. . . . . . . . . . . . . . . 14,16,20

3033 Arsenobetaine Standard Solution. . . . . . . . . . . . . . . . . . . . . 14,16,20

3034 Arsenocholine Standard Solution  . . . . . . . . . . . . . . . . . . . . 14,16,20

3035 Arsenic Species in Apple Juice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3036 Arsenic Acid (AsV) Standard Solution. . . . . . . . . . . . . . . . . 14,16,20

3037 Arsenous Acid (AsIII) Standard Solution. . . . . . . . . . . . . . . 14,16,20

3060 Monoester Phthalates in Acetonitrile. . . . . . . . . . . . . . . . . . . . . . . . 44

3074 Phthalates in Methanol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

3077 Aroclor 1242 in Transformer Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

3079 Aroclor 1254 in Transformer Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

3080 Aroclor 1260 in Transformer Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

3101a Aluminum (Al) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3102a Antimony (Sb) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3103a Arsenic (As) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3103a Arsenic (As) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3104a Barium (Ba) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3105a Beryllium (Be)  Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3106 Bismuth (Bi) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3107 Boron (B) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3108 Cadmium (Cd) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3109a Calcium (Ca) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3110 Cerium (Ce) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3111a Cesium (Cs) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3112a Chromium (Cr) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3113 Cobalt (Co) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3114 Copper (Cu) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3115a Dysprosium (Dy) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . 15

3116a Erbium (Er) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3117a Europium (Eu) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3118a Gadolinium (Gd) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . 15

3119a Gallium (Ga) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3120a Germanium (Ge) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . 15

3121 Gold (Au) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3122 Hafnium (Hf) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3123a Holmium (Ho) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3124a Indium (In) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3126a Iron (Fe) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3127a Lanthanum (La) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . 15

3128 Lead (Pb) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3129a Lithium (Li) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Numerical Index

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116

SRM Description Page #

3130a Lutetium (Lu) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3131a Magnesium (Mg) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . 15

3132 Manganese (Mn) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . 15

3133 Mercury (Hg) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3134 Molybdenum (Mo) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . 15

3135a Neodymium (Nd) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . 15

3136 Nickel (Ni) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3137 Niobium (Nb) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3138 Palladium (Pd) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3139a Phosphorus (P)  Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . 15

3140 Platinum (Pt) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3141a Potassium (K) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3142a Praseodymium (Pr) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . 15

3143 Rhenium (Re) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3144 Rhodium (Rh) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3145a Rubidium (Rb) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3147a Samarium (Sm) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . 15

3148a Scandium (Sc) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3149 Selenium (Se) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3150 Silicon (Si) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3151 Silver (Ag) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3152a Sodium (Na) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3153a Strontium (Sr) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3154 Sulfur (S) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3155 Tantalum (Ta) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3156 Tellurium (Te) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3157a Terbium (Tb) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3158 Thallium (Tl) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3160a Thulium (Tm) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3161a Tin (Sn) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3162a Titanium (Ti) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3163 Tungsten (W) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3164 Uranium (U) Standard Solution (Radioactive). . . . . . . . . . . . . . . . 15

3165 Vanadium (V) Standard Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3166a Ytterbium (Yb) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3167a Yttrium (Y) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3168a Zinc (Zn) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3169 Zirconium (Zr) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3177 Mercuric Chloride (HgCl2) Standard Solution. . . . . . . . . . . . . . . . . 15

3180 Iodide Anion (I-) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . . . . 16

3181 Sulfate Anion (SO4

2-) Standard Solution. . . . . . . . . . . . . . . . . . . . . 16

3182 Chloride Anion (Cl-) Standard Solution. . . . . . . . . . . . . . . . . . . . . . 16

3183 Fluoride Anion (F-

) Standard Solution. . . . . . . . . . . . . . . . . . . . . . . 16

3184 Bromide Anion (Br -) Standard Solution. . . . . . . . . . . . . . . . . . . . . . 16

3185 Nitrate Anion (NO3

-

) Standard Solution. . . . . . . . . . . . . . . . . . . . . . 16

3186 Phosphate Anion (PO4

3-) Standard Solution. . . . . . . . . . . . . . . . . . 16

3222 Cigarette Tobacco Filler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3230 Iodine-129 Isotopic Standard (Low Level). . . . . . . . . . . . . . . . . . . 16

3231 Iodine-129 Isotopic Standard (High Level). . . . . . . . . . . . . . . . . . . 16

3232 Kelp Powder (Thallus laminariae). . . . . . . . . . . . . . . . . . . . . . . . . 50

3233 Fortified Breakfast Cereal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

3234 Soy Flour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

3235 Soy Milk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49,50

3246 Ginkgo biloba (Leaves). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3247 Ginkgo biloba (Extract). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3248 Ginkgo-Containing Tablets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3250 Saw Palmetto (Serenoa repens) Fruit. . . . . . . . . . . . . . . . . . . . . . . 50

3251 Saw Palmetto (Serenoa repens) Extract. . . . . . . . . . . . . . . . . . . . 50

3252 Protein Drink Mix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

SRM Description Page #

3253 Yerba Mate Leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,49

3254 Green Tea (Camellia sinensis) Leaves. . . . . . . . . . . . . . . . . . . 48,49,50

3255 Green Tea (Camellia sinensis) Extract. . . . . . . . . . . . . . . . . . 48,49,50

3256 Green Tea-Containing Solid Oral Dosage Form. . . . . . . . . . . 49,50

3262 St. John’s Wort (Hypericum perforatum L.) Aerial Parts. . 44,50

3268 Kudzu (Pueraria montana var. lobata) Extract. . . . . . . . . . . . . . . . 50

3275 Omega-3 and Omega-6 Fatty Acids in Fish Oil. . . . . . . . . . . . . . . 50

3279 Chromium Dietary Supplement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3281 Cranberry (Fruit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48,50

3282 Low-Calorie Cranberry Juice Cocktail. . . . . . . . . . . . . . . . . . . . . 48,50

3283 Cranberry Extract. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3284 Cranberry-Containing Solid Oral Dosage Form. . . . . . . . . . . . . . 50

3285 Mixed-Berry Containing Solid Oral Dosage Form. . . . . . . . . . . . 50

3287 Blueberry (Fruit). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3289 Multivitamin Tablets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3290 Dry Cat Food. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3291 Bilberry Extract. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3294 Multielement Tablets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3299 Ground Turmeric (Curcuma longa L.) Rhizome. . . . . . . . . . . . . 50

3300 Curcumin Extract of Turmeric (Curcuma longa L.) Rhizome 50

3384 Ground Asian Ginseng (Panax ginseng C.A. Meyer) Rhizome. . 50

3385 Asian Ginseng (Panax ginseng) Extract. . . . . . . . . . . . . . . . . . . . . . 50

3389 Ginsenosides Calibration Solutions. . . . . . . . . . . . . . . . . . . . . . . . . 50

3398 Ginger (Zingiber officinale) Rhizome. . . . . . . . . . . . . . . . . . . . . . . . . 50

3451 Low Temperature Seebeck Coefficient Standard. . . . . . . . . . . . . 73

3452 High-Temperature Seebeck Coefficient Standard 

 (295 K to 900 K). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

3461 Standard Reference Cantilevers for Atomic 

 Force Microscopy Spring Constant Calibration. . . . . . . . . . . . 106

3530 Iodized Table Salt (Iodide). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

3530 Iodized Table Salt (Iodide). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

3600 Absolute Intensity Calibration Standard 

 for Small-Angle X-Ray Scattering. . . . . . . . . . . . . . . . . . . . . . . . . . . 92

3655 Glycans in Solution (Frozen). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3655 Glycans in Solution (Frozen). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3667 Creatinine in Frozen Human Urine. . . . . . . . . . . . . . . . . . . . . . . . . . 20

3667 Creatinine in Frozen Human Urine. . . . . . . . . . . . . . . . . . . . . . . . . . 24

3668 Mercury, Perchlorate, and Iodide 

 in Frozen Human Urine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,21,24

3669 Arsenic Species in Frozen Human Urine 

 (Elevated Levels). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,21,24

3671 Nicotine Metabolites in Human Urine (Frozen). . . . . 20,22,24,64

3672 Organic Contaminants in Smokers' Urine 

 (Frozen). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,22,24,44,64

3673 Organic Contaminants in Non-Smokers' Urine 

 (Frozen). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,22,24,44,64

3949 Folate Vitamers in Frozen Human Serum. . . . . . . . . . . . . . . . . 21,24

3950 Vitamin B6 in Frozen Human Serum. . . . . . . . . . . . . . . . . . . . . . 21,24

3951 Fatty Acid Species in Frozen Human Serum. . . . . . . . . . . . . . . 21,24

4222d Carbon-14-n-hexadecane RadioactivityStandard. . . . . . . . . . . . 81

4226d Nickel-63 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

4233f Cesium-137 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . . . 81

4239a Strontium-90 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . 81

4251d Barium-133 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4274 Holmium-166m Gamma-ray Emission Rate Standard. . . . . . . . 81

4288b Technetium-99 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . 81

4320b Curium-244 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4321d Natural Uranium Radioactivity Standard. . . . . . . . . . . . . . . . . . . . 81

4322d Americium-241 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . 81

4323c Plutonium-238 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . 81
Numerical Index

www.nist.gov/srm | Phone: 301.975.2200 | Email: srminfo@nist.gov

117

SRM Description Page #

4324b Uranium-232 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . 81

4326a Polonium-209 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . 81

4328c Thorium-229 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . 81

4329a Curium-243 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4330c Plutonium-239 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . 81

4332e Americium-243 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . 81

4334j Plutonium-242 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . 81

4337 Lead-210 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

4338b Plutonium-240 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . 81

4339b Radium-228 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4340b Plutonium-241 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . 81

4341a Neptunium-237 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . 81

4342a Thorium-230 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . 81

4350B River Sediment Environmental Radioactivity Standard. . . . . . . 82

4351 Human Lung Environmental Radioactivity Standard. . . . . . . . . 82

4352 Human Liver Environmental Radioactivity Standard. . . . . . . . . 82

4353a Rocky Flats Soil Number 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

4354 Freshwater Lake Sediment Environmental 

 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

4355 Peruvian Soil Powder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

4356 Ashed Bone Environmental Radioactivity Standard. . . . . . . . . . 82

4357 Ocean Sediment Environmental Radioactivity Standard. . . . . 82

4358 Ocean Shellfish Radionuclide Standard. . . . . . . . . . . . . . . . . . . . . 82

4359 Seaweed Radionuclide Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

4361c Hydrogen-3 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4370d Europium-152 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . 81

4401L Iodine-131 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . . . . 80

4404L Thallium-201 Radioactivity Standard  . . . . . . . . . . . . . . . . . . . . . . . 80

4407L Iodine-125 Radioactivity Standard  . . . . . . . . . . . . . . . . . . . . . . . . . 80

4410H Technetium-99m Radioactivity Standard  . . . . . . . . . . . . . . . . . . . 80

4412L Molybdenum-99 Radioactivity Standard  . . . . . . . . . . . . . . . . . . . 80

4415L Xenon-133 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . . . 80

4416L Gallium-67 Radioactivity Standard  . . . . . . . . . . . . . . . . . . . . . . . . . 80

4417L Indium-111 Radioactivity Standard  . . . . . . . . . . . . . . . . . . . . . . . . 80

4427L Yttrium-90 Radioactivity Standard  . . . . . . . . . . . . . . . . . . . . . . . . . 80

4915f Cobalt-60 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . 81

4919I Strontium-90 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . 81

4926e Hydrogen-3 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4927g Hydrogen-3 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4929f Iron-55 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

4943 Chlorine-36 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . . . 81

4949d Iodine-129 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . . 81

4965a Radium-226  Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . 81

4966a Radium-226 Radioactivity Standard . . . . . . . . . . . . . . . . . . . . . . . . 81

4967a Radium-226 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4969 Radium-226 Radioactivity Standard. . . . . . . . . . . . . . . . . . . . . . . . . 81

4990C Oxalic Acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

8010 Sand for Sand Sieve Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

8012 Gold Nanoparticles, Nominal 30 nm Diameter. . . . . . . 22,94,102

8013 Gold Nanoparticles, Nominal 60 nm Diameter. . . . . . . 22,94,102

8017 Polyvinylpyrrolidone Coated Silver Nanoparticles 

 (Nominal Diameter 75 nm). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

8027 Silicon Nanoparticles (Nominal Diameter 2 nm). . . . . . . . . . . 102

8037 Krill Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8040a Sodium Oxalate (Reductometric Standard). . . . . . . . . . . . . . . . . . 14

8044 Common Commercial Asbestos: Chrysotile. . . . . . . . . . . . . . . . . 25

8172 Copper Freezing-Point Reference (1084.6 °C). . . . . . . . . . . . . . . . 73

8173 Lead Freezing-Point Reference (327.453 °C). . . . . . . . . . . . . . . . . 73

8174 Gallium Melting-Point Reference (29.7646 °C) 

 (fixed-point cell). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

SRM Description Page #

8182 Fatty Acid Methyl Esters in 2,2,4-Trimethylpentane. . . . . . . . . . 44

8183 Omega-3 and Omega-6 Fatty Acids in Botanical Oils. . . . . . . . . 50

8186 Soy Protein Isolate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8187 Soy Protein Concentrate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8188 Soy-Containing Solid Oral Dosage Form. . . . . . . . . . . . . . . . . . . . . 50

8230 Saccharomyces cerevisiae NE095 Cells for Cell 

 Counting and DNA-based Detection (freeze-dried). . . . . . . . . 27

8238 Glyphosphate in Oat Flour (High Level). . . . . . . . . . . . . . . . . . . . . 49

8239 Glyphosphate in Oat Flour (Low Level). . . . . . . . . . . . . . . . . . . . . . 49

8256 Wild-caught Coho Salmon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8257 Aquacultured Coho Salmon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8258 Wild-caught Shrimp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8259 Aquacultured Shrimp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

8260 Infant Nutritional Formula (hydrolyzed milk-based). . . . . . . . . . 48

8261 Adult Nutritional Formula (high-protein). . . . . . . . . . . . . . . . . . . . 48

8301 Boron Isotopes in Marine Carbonate 

 (Simulated Coral and Foraminifera Solutions). . . . . . . . . . . . . . 17

8321 Peptide Mixture of Proteomics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8323 Yeast Protein Extract. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8366 EGFR and MET Gene Copy Number Standards 

 for Cancer Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8366 EGFR and MET Gene Copy Number Standards

 for Cancer Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8375 Microbial Genomic DNA Standards 

 for Sequencing Performance Assessment 

 (MG-001, MG-002, MG-003, MG-004). . . . . . . . . . . . . . . . . . . . 27,65

8376 Microbial Pathogen DNA Standards 

 for Detection and Identification. . . . . . . . . . . . . . . . . . . . . . . . . 27,65

8391 Human DNA for Whole-Genome Variant Assessment 

 (Son of Eastern European Ashkenazi Jewish Ancestry) 

 (HG-002). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27,65

8391 Human DNA for Whole-Genome Variant Assessment 

(QTY 10) (Son of Eastern European Ashkenazi Jewish Ancestry) 

 (HG-002). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8391 Human DNA for Whole-Genome Variant Assessment 

(QTY10) (Son of Eastern European Ashkenazi Jewish Ancestry) 

 (HG-002). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8392 Human DNA for Whole-Genome Variant Assessment 

 (Trio of Eastern European Ashkenazi Jewish Ancestry) 

 (HG-002, HG-003, HG-004). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27,65

8393 Human DNA for Whole-Genome Variant Assessment 

(QTY 10) (Son of Chinese Ancestry) (HG-005). . . . . . . . . . . . . . . . . . . . . 27,65

8398 Human DNA for Whole-Genome Variant Assessment 

(QTY10) (Daughter of Utah/European Ancestry) (HG-001). . . . . . . . 27,65

8404 Almond Flour for Allergen Detection. . . . . . . . . . . . . . . . . . . . . . . . 49

8405 Hazelnut Flour for Allergen Detection. . . . . . . . . . . . . . . . . . . . . . . 49

8420 Electrolytic Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73,84

8441a Wheat Hardness (kernel form). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

8446 Perfluorinated Carboxylic Acids and

 Perfluorooctane Sulfonamide in Methanol. . . . . . . . . . . . . . 44,45

8447 Perfluorinated Sulfonic Acids in Methanol. . . . . . . . . . . . . . . . 44,45

8461 Human Liver for Proteomics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8480 Secondary Ferrite Number Standard - Low Range. . . . . . . . . 105

8481 Secondary Ferrite Number Standard - High Range. . . . . . . . . 105

8495 Northern Softwood. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

8496 Eucalyptus Hardwood. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42,105

8499 Trace Elements in Coal (Bituminous). . . . . . . . . . . . . . . . . . 31,40,42

8505 Vanadium in Crude Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

8506a Moisture in Transformer Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8509 Moisture in Methanol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

8529 IAEA-S-3 (Sulfur Isotopes in Silver Sulfide). . . . . . . . . . . . . . . . . . . 17
Numerical Index

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118

SRM Description Page #

8535a VSMOW2 Vienna Standard Mean Ocean Water 

 (Hydrogen and Oxyen Isotopes in Water). . . . . . . . . . . . . . . . . . . 17

8536 GISP-Water. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8537 SLAP-Water Light Stable Isotopic Standard. . . . . . . . . . . . . . . . . . 17

8539 NBS22 Oil (Carbon and Hydrogen Isotopes in Oil). . . . . . . . . . . . 17

8540 IAEA-CH-7 

 (Carbon and Hydrogen Isotopes in Polyethylene Foil). . . . . . . 17

8541 USGS24 Graphite (Carbon Isotopes in Graphite). . . . . . . . . . . . . 17

8542 IAEA-CH-6 Sucrose (Carbon Isotopes in Sucrose). . . . . . . . . . . . 17

8544 NBS 19 Limestone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

 (Carbon and Oxygen Isotopes in Carbonate). . . . . . . . . . . . . . . 17

8545 LSVEC (Carbon, Oxygen, and Lithium Isotopes 

 in Lithium Carbonate). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8546 NBS28 (Silicon and Oxygen Isotopes in Silica Sand) . . . . . . . . . 17

8547 IAEA-N-1 (Nitrogen Isotopes in Ammonium Sulfate). . . . . . . . . 17

8548 IAEA-N-2 (Nitrogen Isotopes in Ammonium Sulfate). . . . . . . . . 17

8550 USGS25 (Nitrogen Isotopes in Ammonium Sulfate). . . . . . . . . . 17

8551 USGS26 (Nitrogen Isotopes in Ammonium Sulfate). . . . . . . . . . 17

8552 NSVEC (Nitrogen Isotopes in Gaseous Nitrogen). . . . . . . . . . . . . 17

8553 IAEA-S-4 (Soufre De Lacq)

 (Sulfur Isotopes in Elemental Sulfur) . . . . . . . . . . . . . . . . . . . . . . . 17

8554 IAEA-S-1 (Sulfur Isotopes in Silver Sulfide). . . . . . . . . . . . . . . . . . . 17

8555 IAEA-S-2 (Sulfur Isotopes in Silver Sulfide). . . . . . . . . . . . . . . . . . . 17

8557 NBS127 (Sulfur and Oxygen Isotopes in Barium Sulfate). . . . . 17

8558 USGS32 (Nitrogen and Oxygen Isotopes in Nitrate). . . . . . . . . . 17

8562 CO2-

13C-enriched, Paleomarine Origin (Carbon Dioxide). . . . . . 17

8563 CO2-

13C-depleted, Petrochemical Origin (Carbon Dioxide). . . . 17

8564 CO2-Biogenic, Modern Biomass Origin (Carbon Dioxide). . . . . 17

8568 USGS34 (Nitrogen and Oxygen Isotopes in Nitrate). . . . . . . . . . 17

8569 USGS35 (Nitrogen and Oxygen Isotopes in Nitrate). . . . . . . . . . 17

8574 L-glutamic Acid USGS41 (Heavy Carbon and

 Nitrogen Isotopes in L-glutamic Acid). . . . . . . . . . . . . . . . . . . . . . 17

8599 Henderson Molybdenite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8610 Mercury Isotopes in UM-Almaden 

 Mono-Elemental Secondary Standard. . . . . . . . . . . . . . . . . . . . . . 30

8631b Medium Test Dust (MTD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

8632a Ultra Fine Test Dust (UFTD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

8634 Ethylene Tetrafluoroethylene for Particle Size Distribution 

and Morphology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23,94

8642a FDA Saxitoxin Dihydrochloride Solution. . . . . . . . . . . . . . . . . . 21,49

8644 Ginseng-Containing Solid Oral Dosage Form. . . . . . . . . . . . . 42,50

8645 Dried Corn Biomass Intermediate After Conversion. . . . . . . . . . 42

8650 Ground Kudzu (Pueraria montana var. lobata) Rhizome. . . . . . 50

8666 Ginger (Zingiber officinale) Extract. . . . . . . . . . . . . . . . . . . . . . . . . . . 50

8671 NISTmAb, Humanized IgG1κ Monoclonal Antibody. . . . . . . 21,23

8704 Buffalo River Sediment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,31,55

8785 Air Particulate Matter on Filter Media. . . . . . . . . . . . . . . . . 22,30,31

8786 Filter Blank for RM 8785. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,30,31

8820 Scanning Electron Microscope Scale Calibration Artifact. . . . . 87

8850 Zeolite Y. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8851 Zeolite A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8852 Ammonium ZSM-5 Zeolite. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8983 Silicon Nitride . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

8988 Titanium Dioxide Powder - Particle Size Distribution. . . . . . . . . 94
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NIST Standard Reference Materials® 2023 Catalog NIST SP 260-176