niSCA-RD£0 ^1

NBS SPECIAL PUBLICATION

wg^^' 260

^ ^ SUPPLEMENT

. ^-^JS^-^ JANUARY, 1970

Price and Availability Listing of

Standard Reference Materials
IMPORTANT NOTICE TO PURCHASERS AND USERS OF

NBS STANDARD REFERENCE MATERIALS

Effective January 1, 1970 the Office of Standard Reference Materials will no longer issue

the Quarterly Insert Sheets which were used to update the current issue of the SRM Catalog.

Instead a new Standard Reference Material Availablility and Price List will be issued semiannually. The format has been changed to improve readability and the List is organized as follows:

Section I — A list of all currently available SRMs arranged by SRM number, together with a brief description and the current price.

Section II — A short description, arranged by catalog category, of all SRMs issued since the

effective date of the current catalog and therefore not contained therein. For ease of

reproduction, tables have been condensed and are, in general, not in the s^e format

used in the catalog. (Please note that the values shown are nominal values. The actual

values certified are given on the Certificate which accompanies the material.) After the

description of each SRM the unit of issue and the price is given.

Section III — A list, arranged by SRM number, of all items which have gone out of stock

since the effective date of the current catalog. A remarks column gives information

concerning alternate SRMs, when the renewal SRM is expected, and similar information. SRMs which are to be discontinued are so marked.

Section IV — Changes in policy, ordering, shipping and information of a general nature.

On or about June 1, 1970 a new reformated SRM Catalog will be issued. It and

subsequent issues will be printed without prices therefore obviating the need for an annual

catalog. Catalogs and the new Standard Reference Materials Availability and Price List will be

mailed automatically to all current customers and those who have completed our Point of

Contact Questionnaire.

Extra forms can be obtained from the Office of Standard Reference Materials, National

Bureau of Standards, Washington, D.C. 20234.

J. Paul Cah, Acting Chief

Office of Standard Reference

Materials

January 2, 1970
SECTION I

AVAILABILITY AND PRICE LIST

Kind Unit Price SRM

50 g $ 32.00 106b llOg 33.00 107b

150 g 33.00 Ulb

150g 40.50 112

150 g 33.00 113

150 g 36.00 114L 150g 33.00 115a 150g 33.00 120a 150g 33.00 121c

150 g 33.00 122e

150g 33.00 124d

150 g 33.00 126b

150 g 33.00 127b 150g 33.00 131b

150 g 33.00 132a

60 g 26.00 133a 150 g 33.00 134a 100 g 27.00 lS6b

100 g 28.00 138 50 g 25.00 139a

1 150g 33.00 140b 150g 33.00 141b 150g 33.00 142 150g 33.00 143b

150 g 33.00 147

30 g 32.00 148 60 g 26.00 152a 70 g 26.00 153a 350 g 27.00 155 200 g 27.00 157a

450 g 28.00 158a 600 g 28.00 160b

150 g 33.00 150 g 33.00 162a

150 g 33.00 163 170g 33.00 168

150 g 33.00 171 60 g 29.00 173a 50 g 40.00 174

100 g 30.50 176 150g 33.00 178 50g 27.00 181 40 g 32.00 182 60 g 29.00 183 150g 33.00 184 150g 33.00 185d 150g 33.00 1861c

75 g 26.00 18611b 60 g 26.00 187a

75 g 33.00 188

75 g 33.00 189

75 g 33.00 191 50g 32.00 192

45 g 27.00 196

75 g 29.00 198

45 g 27.00 199

45 g 27.00 217b-5 45 g 27.00 217b-8S

150 g 33.00 217b-25 40 g 32.00 217b-50 150g 33.00 300

100 g 33.00 301 60 g 27.00 302 60 g 27.00 303 150g 25.00 304

Kind Unit

Limestone, argillaceous White iron Cast iron Cast iron Cast iron

Cast iron Cast iron (higli phospliorus)

Steel bessemer, O.IC

Steel bessemer, 0.2C

Steel B.O.H. 0.2C

Steel B.O.H. 0.4C

Steel B.O.H. 0.6C

Steel B.O.H. 0.8C

Steel B.O.H. O.IC

Steel B.O.H. I.IC

Sucrose (cane sugar) Steel A.O.H. 0.2C Manganese ore Iron ore, Sibley Iron ore, Norrie

Steel Cr-V(SAE 6150)

Steel Ni-Cr (SAE 3140)

Steel Ni-Mo (SAE 4820)

Steel Cr2-Mol

Brass, sheet

Benzoic acid, calorimetric Sodium oxalate, oxidimetric Dextrose (glucose) Tin, freezing-point std Aluminum, freezing-point std

Copper, freezing-point std Lead, freezing-point std

Steel, W-18-Cr4-Vl

Steel, electric furnace 1.2C

Bronze, cast

Bearing metal, tin-base Ingot iron Refined silicon Ferrosilicon (Si 50%)

Ferrochromium (high carbon)

Steel, basic electric, 0.3C

Bauxite . > Feldspar, potash Calcium molybdate

Steel Cr-Mo (SAE X4130)

Steel, stainless (Crl3)(SAE420)

Nickel-chromium cast iron Arsenic trioxide, oxidimetric Acid potassium phthalate, acidimetric Aluminum alloy, wrought

Aluminum alloy, casting Aluminum-silicon alloy Limestone, dolomitic

Glass, lead-barium Ferrophosphorus

Glass, opal

Glass, low boron

Glass, high boron

Zinc-base die-casting alloy Feldspar, soda

Steel, manganese (SAE TI340)

Stainless steel Crl8-Ni9 (SAE 304) . . Chrome refractory Burned magnesite

Steel, high-sulfur 0.2C carbon only . .

Steel Cr-Mo-Al (NitraUoy G)

Cast iron Ni-Cr-Mo

Steel Ni-Mo (SAE 4620)

Silicon carbide Zinc ore (Tri-State concentrate)

Cement, turbidimetric and fineness std. . Cast iron Cu-Ni-Cr Phosphate rock

Steel Crl8-NilO (Ti bearing) (SAE 321) . Cast iron (car-wheel)

Bronze (Cu85-PbS-Sn5-Zn5) ounce metal

Steel Ni36 (High nickel) Solder (Sn40-Pb60)

Steel Low-carbon silicon Steel Mo5-W6-Cr4-V2

Steel, stainless (Crl3-Mo0.3-S0.3)

Steel Mo8-W2-Cr4-VI

Potassium dichromate, oxidimetric Tin ore (N.E.I, concentrate)

Steel Cr-Ni-Mo (AISI 8640)

Benzoic acid Acetanilide

Anisic acid Cystine Triphenyl phosphate

Nicotinic acid

Steel B.O.H. 0.5C, 0.03 Sn

Steel Co8-Mo9-W2-Cr4-V2

Steel Cr0.5-W0.5

Nickel sUver (Cu58-NiI2-Zn29)

Bronze, silicon Stainless steel E Crl9-Nil4-Mo3 (SAE 316) Monel-type (Ni64-Cu31)

Steel 0.9C, 0.9Mn, l.OCr

Co41-Mo4-Nb3-Tal-W4

Magnesium-base alloy Ti aUoy 6AI-4V

Ti alloy 4Al-4Mn

Ti aUoy 5AI-2.5Sn

Steel basic oxygen 0.4C

Lithium ore (Spodumene)

Lithium ore (Petalite) Lithium ore (Lepidolite) Bronze, leaded-tin

Acid potassium phthalate Potassium dihydrogen phosphate Disodium hydrogen phosphate Borax

Potassium hydrogen tartrate

Potassium tetroxalate Sodium bicarbonate Sodium carbonate Ferrochromium (low carbon)

Silica refractory (0.2% AI2O3)

Silica refractory (0.5% AI2O3)

2,2,4-Trimethylpentane 2,2,4-Trimethylpentane

2,2,4-Trimethylpentane 2,2,4-Trimethylpentane

Toluidine red toner Yellow ocher Raw sienna Burnt sienna Raw umber

150g $ 33.00 150g 33.00 150 g 33.00

85 g 27.00 50 g 27.00

set 53.00 150 g 33.00 45 g 28.00 150g 33.00 150 g 33.00 ISOg 33.00 150 g 33.00 150g 33.00 100 g 27.00 150g 33.00

150g 33.00 150g 33.00 60 g 26.00 50g 27.00 150 g 33.00 2g 27.50

2 E 27.50 2g 26.00 2g 29.00 2g 27.50 2g 23.50 150 g 33.00 150 g 33.00 150 g 33.00 135g 33.00

150 g 33.00

150 g 33.00 150g 33.00 100 g 40.00

150g 33.00 100 g 33.00 100 g 33.00 100 g 33.00 100 g 33.00

150 g 33.00 45 g 27.00 45 g 27.00 45 g 27.00 150 g 33.00

60 g 35.00 30 g 35.00 30 g 30.00 30 g 30.00 60 g 30.00

65 g 30.00 30 g 33.00 30 g 33.00 100 g 45.00 45 g 27.00

45 g 27.00

5 ml 40.00

8 ml 65.00

25 ml 1 80.00 50 ml 330.00

40 g 26.00 45 g 26.00 45 g 26.00 50g 26.00 45 g 26.00

1
Kind

Burnt umber

Venetian red

Metallic brown

Indian red Mineral red

Bright red oxide Carbon black (high color) Carbon black (all purpose) Black iron oxide Yellow iron oxide, light lemon . .

Yellow iron oxide, lemon

Yellow iron oxide, orange Yellow iron oxide, dark orange . .

Lampblack

Primrose chrome yellow Lemon chrome yellow Medium chrome yellow

Light chrome orange Dark chrome orange Ultramarine blue

Iron blue

Light chrome green Medium chrome green Dark chrome green

Steel B.O.H. O.IC (carbon only) .

Steel B.O.H. l.IC (carbon only) . . Stainless steel, Crl7-Ni9-0.2Se (SAE 303Se) Ferroniobium

Ductile iron

Nodular iron Nodular iron

Stainless steel, CrI6-Ni2 (SAE 431)

Stainless steel, Q15-Ni7-Mo2-All . Stainless steel, Crl6-Ni4-Cu3

Valve steel (Cr22-Ni4-Mn9)

SteelNi26-Crl5 (A286)

Nickel-base (Ni57-Col4-Cr20)

Benzoic acid, acidimetric Unalloyed titanium for hydrogen .

Unalloyed titanium for hydrogen . Unalloyed titanium for hydrogen . Unalloyed titanium for oxygen . .

Titanium alloy, 6A1-4V

Zircaloy-2

Zinc oxide

Sulfur

Stearic acid Benzothiazyl disulfide Channel black

Light magnesia

Phenyl-beta-naphthylamine

Oil furnace black Conducting black

(Calcium carbonate

Calcium silicate Gas furnace black Mercaptobenzothiazole

N-tertiary-Butyl-2-benzo- thiazolesulfenamide

Natural rubber

Styrene-butadiene type 1500 .... Butyl rubber

Styrene-butadiene, type 1503 . . . . Acrylonitrile-butadiene rubber , .

Steel, basic electric

Steel, medium manganese

Steel, chromium-vanadium

Steel, chromium-nickel

Steel, nickel

Unit Price SRM

50 g > 26. OU 410a

60 g 26.00 413 60 g 26.00 414

50 g 26.00 417a

65 g 26.00 418

50 g 26.00 420a

10lugE 26.00 427

20 g 26.00 432

42 g 26.00 436

20 g 26.00 437

20 g 26.00 438

25 2 26.00 439

40 g 26.00 440 15g 26.00 65 g 26.00 441 60 g 26.00 442

65 E 26.00 443

100 g 26.00 444

100 g 26.00 445

37 g 26.00

25 g 26.00 446 60 g 26.00 50 g 26.00 447

45 g 26.00 300 g 27.00 448

300 g 27.00 449 150g 40.00 450

100 g 45.00 461

150 g 33.00 462

150 g 33.00 463

150 g 35.00 464 150g 33.00 465 150g 33.00 466 150g 33.00 467

150 g 40.00 468

150 g 33.00 480 150g 33.00 481 30g 26.00 482

20 g 35.00 592

20 g 35.00 593

20 g 35.00 594

20 g 40.00 595 20 g 40.00 596

100 g 55.00 597

2 kg 33.80 598

6 kg 38.00 599

3.2 kg 31.00 625 ^OOg 39.80 626

7 kg 67.00 627

450 g 25.25 628

600 g 26.75 629

7 kg 36.00 630

5.5 kg 26.25 631

6 kg 25.25 641

4 kg 25.25 642

7.5 kg 52.00 800 g 33.00 644

645

800 g 37.00 646

653

34 kg 105.00 34 kg 67.00 O /

34 kg 105.00 672

34 kg 54.00 673

25 kg 105.00 680 L-1

30.00 680 L-2eaea 30.00 681 L-1 ea 30.00 681 L-2

ea 30.00 682

ea 30.00 683

685-R

Kind

Steel, Cr2-Mol

Steel A.O.H. 0.4C

Steel Cr-Mo (SAE 4140)

Steel B.O.H. 0.4C

Steel Cr-Mo (SAE X4130)

Ingot iron

Steel Cr-Mo (boron only) (SAE 4150)

Tin B

Steel special (Cr6-Mo3-W10)

Steel special (Cr8-Mo2-W3-Co3)

Steel Mo high speed (AISI-SAE-M30)

Steel Mo high speed (AISI-SAE-M36)

Steel special W high speed (Cr2-W13-Col2)

Steel W high speed (AISl-SAE-Ti) . .

Stainless steel Crl6-Nil0

Stainless steel G18.5-Ni9.5

Stainless steel Cr20.5-NilO

Stainless steel Crl3-Mo0.9

(Modified AISI 410)

Stainless steel Crl8-Ni9

(Modified AISI 321)

Stainless steel Cr24-Nil3

(Modified AISI 309)

Stainless steel Cr9-Mo0.3

(Modified AISI 403)

Stainless steel Cr5.5-Ni6.5

Stainless steel Cr3-Ni25

Low-alloy steel A

Low-alloy steel B

Low-alloy steel C

Low-alloy steel D

Ingot iron E

Ingot iron F

Low-alloy steel G

Low-alloy steel H

Tungsten - 20% Molybdenum alloy .

Gold-silver wires Gold-copper wires Hydrocarbon blends - Blend No. 1 .

Hydrocarbon blends - Blend No. 2 .

Hydrocarbon blends - Blend No. 3 .

Hydrocarbon blends - Blend No. 4 .. Hydrocarbon blends - Blend No. 5 . . Hydrocarbon blends - Blend No. 6 . . Hydrocarbon blends - Blend No. 7 .

Hydrocarbon blends - Blend No. 8 .

Zinc-base A

Zinc-base B

Zinc-base C

Zinc-base D .

Zinc-base E

Zinc-base F

Zinc spelter (Modified)

Ti alloy 8Mn(A)

Ti alloy 8Mn(B)

Ti alloy 8Mn(C)

Ti alloy 2Cr-2Fe-2Mo(A)

Ti alloy 2Cr-2Fe-2Mo(B)

Ti aUoy 2Cr-2Fe-2Mo(C)

Ti aUoy 6A1-4V(A)

Nickel oxide 1 Nickel oxide 2 Nickel oxide 3 High-purity platinum

High-purity platinum

Doped platinum

Doped platinum

High-purity zinc Zinc metal

High-purity gold (rod)

Unit Price

ea 2> 3U.UU 30.00

ea 30.00

ea 30.00

ea 30.00

ea in no

30.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 35.00

ea 125.00

set 130.00

set 130.00

set 32.00

set 32.00

set 32.00

32.00

set 32.00

set 32.00

set 32.00

set 32.00

50.00

ea 50.00

ea 50.00

ea 50.00

ea 50.00 50.00

ea 50.00

ea 50.00

ea 50.00

ea 50.00 50.00

ea 50.00

ea 50.00

ea 50.00

25 g 35.00

25 E 35.00 25 g 35.00

ea 40.00

ea 190.00

ea 40.00

ea 190.00

ea 90.00

ea 55.00

ea 55.00

2
Kind

High-purity gold (wire)

Light-sensitive paper Standard faded strips Light-sensitive plastic chips

Light-sensitive plastic chips

Internal tearing resistance paper

Polystyrene, narrow molecular weight

.

Polystyrene, broad molecular weight .

.

Soda-lime silica glass

Lead-silica glass

Mixed alkali lead silicate glass Dense barium crown glass Alkaline earth alumina silicate glass . .

.

Alkali-free aluminosilicate Neutral (borosilicate) glass

Tris(hydroxymethyl)aminomethane . . Mossbauer Differential Chemical Shift Selenium Rubidium chloride Zinc

Zinc, freezing-point std Gold, vapor pressure std Steel A.O.H. 0.6C

Steel A.O.H. 0.6C

Steel, basic electric

Steel, medium manganese

Steel, chromium-vanadium

Steel, chromium-nickel

Steel, nickel

Steel, nickel

Steel Cr2-Mol

Steel B.O.H. 0.4C

Ingot iron Ingot iron

Steel Cr-W, 0.9C

Steel Cr-Mo (boron only) (SAE 4150)

.

Steel, special (Cr6-Mo3-W10)

Steel, special (Cr6-Mo3-W10)

Steel, special (Cr8-Mo2-W3-Co3)

Steel, special (Cr8-Mo2-W3-Co3)

Steel Mo high speed (AISI-SAE-M30) . Steel Mo high speed (AISI-SAE-M30) . Steel Mo high speed (AISI-SAE-M36) . Steel Mo high speed (AISI-SAE-M36) . Steel, special W high speed (Cr2-W13-Col2)

Steel, special W high speed (Cr2-W13-Col2)

Steel W high speed (AISI-SAE-Ti)

Steel W high speed (AISI-SAE-Ti)

Steel Crl3-Mo0.9 (Modified AISI 410)

Steel Crl3-Mo0.9 (Modified AISI 410)

Steel Crl8-Ni9 (Modified AISI 321) . . Steel Crl8-Ni9 (Modified AISI 321) . . Steel Cr24-Nil 3 (Modified AISI 309) . Steel Cr24-Nil 3 (Modified AISI 309) .

Steel Cr9-Mo0.3 (Modified AISI 403) . Steel Cr5.5-Ni6.5

Steel Cr5.5-Ni6.5

Steel Cr3-Ni25

Steel Cr3-Ni25

Cholesterol Urea

Uric acid Creatinine Calcium carbonate

Plutonium sulfate tetrahydrate assay . . Plutonium sulfate hydrate Uranium oxide (U308)

Boric acid

lOfi Boric acid, 95% enriched

Unit Price SRM

ea $ 55.00 953

Pkg 40.00 975

booklet 155.00 976

Pkg 40.00 977 pkg 40.00 978

pkg 56.20 979 2g 33.00 980 18g 33.00 981-3

2 lb 52.00 1000

3 lb 75.00 1002b

0.5 lb 38.00 1003

0.5 lb 38.00 1010a

0.5 lb 38.00 1011 200 g 38.00 1013 250 g 38.00 1014

50 g 40.00 1015

ea 155.00 1016

1 lb 45.00 1019 Ig 35.00 1020 450 g 43.00 1021

350 g 70.00 1022

ea 85.00 1023

ea 30.00

ea 35.00 1024

ea 30.00

ea 30.00 1025

ea 30.00 1026

ea 30.00 1027

ea 30.00 1028

ea 35.00 1029

ea 30.00 1030

ea 30.00 1031

ea 30.00 1032

ea 35.00 1033

ea 30.00 1051b

ea 30.00 10S2b

ea 42.50

ea 50.00 1053

ea 42.50 1055b

ea 50.00 1057b

ea

ea

42.50

50.00

1059b

1060a

ea 42.50 1061b

ea 50.00 1062a

1063a

ea 42.50 1064 1065b

ea 50.00 1066a

ea 42.50 1069b

ea 50.00 1070a

ea 42.50 1071a

ea 50.00 1073b

ea 42.50 1074a

ea 50.00 1075a

ea 42.50 1076

ea 50.00 1077a

ea 50.00 1078a

ea 42.50

ea 50.00 1079a

ea 42.50

ea 50.00 1080

0.5 g 25 g30.00

36.00 1090 lOg 30.00 1091 lOg 36.00 1092

20 g 30.00 1093

0.5 g 0.25 g70.00 60.50

1094 C 1 100

25 g 28.25 1101 100 g 55.00 CI 101 0.25 g 40.00

Kind

Neutron density monitor wire . .

.

Sodium chloride - isotopic Copper metal - isotopic Sodium bromide

Silver nitrate - isotopic Chromium nitrate - isotopic . . .

.

Magnesium metal - isotopic Lead - isotopic Enameled iron plaques Hardboard sheet, 4 specimens . .

.

Glass spheres (5-30 micron)

Microcopy test chart Portland cement

Portland cement

Portland cement

Portland cement

Portland cement

Glass spheres (sieves No.8-18) . .

.

Zinc sulfide phosphor

Zinc silicate phosphor

Zinc sulfide phosphor

Zinc-cadmium sulfide phosphor

(Ag activator) Zinc-cadmium sulfide phosphor (Cu activator) Zinc phosphate phosphor

Calcium tungstate phosphor . . .

.

Magnesium tungstate phosphor .

.

Zinc silicate phosphor

Calcium silicate phosphor

Magnesium arsenate phosphor . .

.

Calcium halophosphate phosphor Barium silicate phosphor

Calcium phosphate phosphor . .

.

Barium cyclohexanebutyrate . . .

.

Bis(l-phenyl-l,3-butanediono) oxovanadium (IV) Cadmium cyclohexanebutyrate .

.

Cobalt cyclohexanebutyrate . . .

.

Dibutyltin bis(2-ethylhexanoate) Lead cyclohexanebutyrate Lithium cyclohexanebutyrate . .

.

Magnesium cyclohexanebutyrate . Manganous cyclohexanebutyrate

.

Menthyl borate Mercuric cyclohexanebutyrate .

.

Nickel cyclohexanebutyrate . . .

.

Octaphenylcyclotetrasiloxane . . Sodium cyclohexanebutyrate . . Strontium cyclohexanebutyrate . Triphenyl phosphate

Zinc cyclohexanebutyrate

Calcium 2-ethylhexanoate Aluminum 2-ethyIhexanoate . . .

.

Potassium erucate

Silver 2-ethylhexanoate

Tris(l-phenyl-l,3-butanediono) chromium (III)

Tris( 1 -phenyl-1 ,3-butanediono)

iron (III) Bis(l-phenyl-I,3-butanediono) copper (II) Ingot iron

Stainless steel (AISI 431) Vacuum-melted steel Valve steel Maraging steel Cartridge brass A

Cartridge brass B

Cartridge brass B

Unit Price

ea $ 35.00

0.25 g 40.00

0.25 g 40.00

0.25 g 40.00

0.25 g 40.00

0.25 g 40.00

0.25 g 40.00

set 105.00

set 25.00

set 35.00 40 g 32.50

set 8.75

set 27.50

set 27.50

set 27.50

set 27.50

set 27.50 inn <T 30.50 14 g 23.50 28 g 23.50 14 g 23.50

14 g 23.50

14 g 23.50 28 g 23.50

28 g 23.50 28 g 23.50 28 g 23.50

14 g 23.50 28 g 23.50

28 g 23.50 28 g 23.50 28 g 23.50 5g 31.00

5g 31.00

5g 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00 Sg 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00 5g 31.00

5 g 31.00 5g 31.00

JS o6 31.00 5g 31.00

5g 31.00

5g 31.00

5g 31.00

ea 55.00

ea 55.00

ea 55.00

ea 55.00

ea 55.00

ea 65.00

ea 65.00

ea 65.00

3
Kind

Cartridge brass C

Cartridge brass C

Free-cutting brass A

Free-cutting brass A

Free-cutting brass B

Free-cutting brass B

Free-cutting brass C

Free-cutting brass C

Naval brass A

Naval brass A

Naval brass B

Naval brass B

Naval brass C

Naval brass C

Red brass A

Red brass A

Red brass B

Red brass B

Red brass C

Red brass C

Gilding metal A

Gilding metal A

Gilding metal B

Gilding metal B

Gilding metal C

Gilding metal C

Commercial bronze A

Commercial bronze A

Commercial bronze B

Commercial bronze B

Commercial bronze C

Commercial bronze C

Aluminum brass A

Aluminum brass A

Aluminum brass B

Aluminum brass B

Aluminum brass C

Aluminum brass C

Beryllium copper CABRA alloy 165-170

Beryllium copper CABRA alloy 165-170

Beryllium copper CABRA alloy 25-172 . Beryllium copper CABRA alloy 25-172 . Beryllium copper CABRA alloy 10-175 .

Beryllium copper CABRA alloy 10-175 . Solder (Sn40-Pb60)

Cast steel 1 Cast steel 2

Ductile iron 1

Ductile iron 2

Ductile iron 3

Blast furnace iron 1 Blast furnace iron 2 White cast iron

White iron White iron

Stainless steel B (Crl8-Nil0)

Stainless steel D (Crl9-Nil0)

Stainless steel Crl8-Nil2-Mo2

Maraging steel (disk form) 49% Ni, balance Fe 80% Ni, 4% Mo, balance Fe

Low-alloy steel C

Ingot iron E

Ingot iron F

Low-alloy steel G

Low-alloy steel H

Selenium steel (0.3% Se) White cast iron (special 1)

White cast iron (special 2) AMS 5360A, AISI 316 aUoy

Unit

ea

ea

ea

ea

ea

eaea

ea

ea

ea

ea

ea

ea

ea

ea

ea

Price

65.00

65.00

65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00

65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00 65.00

65.00 65.00

65.00

65.00

65.00

65.00

65.00

65.00 65.00

65.00

65.00 65.00

65.00 65.00

65.00

65.00

65.00

65.00

50.00

65.00

65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00 65.00

65.00

65.00

65.00

65.00 65.00

SRM

1194

1203 1210

1301 1302

1303 1304

1305

1306

1307 1308

1309 1310

1311 1312

1313 1314

1315

1316

1317 1318

1319 1320

1331 1332

1333 1334

1335

1336

1337 1338

1339

1341

1342 1343

1344 1345

1346

1351 1352

1353

1361 1362

1363 1364

1365

1366 1367

1371 1372

1373

1374

1375

1376 1377

1378

1381 1382

1383

1384

1385

1386

1398

1399

1402

1403 1404

1405

1406

1407

Kind

A 286 high-temp alloy Inco 713-A high-temp alloy .

.

Zirconium metal A

Metal coating thickness Metal coating thicloiess Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating tliickness Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating thickness Metal coating thickness Metal coating thickness Metal coating ttiickness Metal coating thickness

Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness Metal coating thickness

Metal coating thickness Metal coating tiiickness Metal coating thickness Metal coating thickness Metal coating thickness

Gold coating thickness Gold coating thickness Gold coating thickness Gold coating thickness Gold coating thickness

Gold coating thickness Gold coating thickness Gold coating thickness Gold coating thickness Gold coating thickness

Gold coating thickness Gold coating thickness Gold coating thickness Gold coating thickness Gold coating thickness

Gold coating thickness Emittance std., 1/2 in. disks . Emittance std., 7/8 in. disks . Emittance std., 1 in. disks . .

.

Emittance std., 11/8 in. disks

Emittance std., 1 1/4 in. disks Emittance std., 2 in. x 2 in. .

.

Unit Price

ea $ 65.00

ea 65.00

ea 90.00

29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

29.00

ea 29.00

ea 29.00

ea 29.00

ea 29.00

set (2) 35.00

set (2) 35.00

set (2) 35.00

set (4) 47.00

set (4) 47.00

set (4) 47.00

set (4) 47.00

set (4) 47.00

set (4) 47.00

set (4) 47.00

ea 48.00

ea 48.00

ea 48.00

ea 48.00

ea 48.00

ea 48.00

ea 48.00

ea 48.00

set (2) 73.00

set (2) 73.00

set (2) 73.00

set (2) 73.00

set (2) 73.00

set (2) 73.00

set (4) 123.00

SCI ^t; 123.00

ea 180.00

ea 190.00

ea 205.00

ea 240.00

ea 255.00

ea 390.00

4
Kind

Emittance std., 1 in. x 10 in Emittance std., 3/4 in. x 10 in Emittance std., 1/2 in. disks

Emittance std., 7/8 in. dislcs Emittance std., 1 in. disks Emittance std., 11/8 in. disks Emittance std., 1 1/4 in. disks Emittance std., 2 in. x 2 in.

Emittance std., 3/4 in. x 10 in. Emittance std., 1/4 in. x 8 in Emittance std., 1/2 in. disks Emittance std., 7/8 in. disks Emittance std., 1 in. disks

Emittance std., 1- 1/8 in. disks Emittance std., 1 1/4 in. disks Emittance std., 2 in. x 2 in. Cyclohexane - dielectric

2.2-0-lsopropylidene-(3-L-idofuranose

2.3-0-IsopropyIidene-p-D-threo-pentulose

L-Inositol Quebrachitol Carbon dioxide in nitrogen Carbon dioxide in nitrogen

Carbon dioxide in nitrogen Oxygen in nitrogen Oxygen in nitrogen Oxygen in nitrogen Oxygen in nitrogen

Oxygen in nitrogen Oxygen in nitrogen Sulfur in residual fuel oil Sulfur in residual fuel oil Zirconium-barium chromate heat source powder (ca 350 cal/g)

Zirconium-barium chromate heat source powder (ca 390 cal/g) Zirconium-barium chromate heat source powder (ca 425 cal/g) Microstandard ion-exchange beads

Color std ISCC-NBS color charts Ethane-dg

Propane-l,l,l-d3 Potassium dihydrogen phosphate

Disodium hydrogen phosphate Sodium bicarbonate Sodium carbonate Secondary std., magnetic tape Gamma-ray std., Cesium-137 Gamma-ray std.. Cadmium- 109 Gamma-ray std., Cobalt-60 Gamma-ray std., Cobalt-60 Gamma-ray std., Thorium-228 Gamma-ray std., Thorium-228

Gamma-ray std., Cesium- 137 Gamma-ray std., Mercury-203

Gamma-ray std., Yttrium-88

Unit Price SRM

ea $ 755.00 4210

ea 605.00 4222

ea 180.00 4223

180.00 4224

ea 180.00 4225

ea

ea

180.00

180.00

4226

4906

ea 180.00 492 1-C 180.00 4922-E

180.00 4924

ea 180.00 4925

ea 180.00 4926

ea 180.00 4927

ea 11 kfi OU.UUnn 4929-B

180.00 4935C

ea 180.00 4940-B 400 ml 125.00 4941-C

15 mg 35.00 4943

jyj mamg 35 00 4947

250 mg 35.00 4948

500 mg 35.00 4950-8

cyl 150.00 4951

cyl 150.00 495 2-A

cyl 150.00 4953

cvl 110.00 4955

cyl 110.00 4956

cyl 110.00 4957

cyl 110.00 4958

cyl 110.00 4959

110.00 4960

100 ml 30.00 4961

100 ml 30.00 4963 50g 55.00 4964-B

4990-B

50 g 55.00 499 1-C 4995-C

50 g 55.00 4996-B

slide 130.00 4997-D

set 255.00 4998-E

set 5 cm^

5.00 320.00 U-005

5 cm^ 1,155.00 U-010

30 g 41.00 U-015

'\Cl JU pg 41.00 U-020

30 g 41.00 U-UjU

30 g

ea

41.00 695.00 U-050

U-100

ea 60.00 U-150

ea 93.00 U-200

ea 70.00 1 1 Q^n U- JDU

ea 70.00 U-500

ea 98.00 U-750

ea 98.00 U-800

ea 60.00 U-850

ea 83.00 U-900

ea 77.00 U-930

Kind

Gamma-ray std., Cobalt-60 Carbon-14(N-Hexadecane)

Carbon-14(N-Hexadecane)

Carbon-14(N-Hexadecane)

Tin-113-Indium-113

NickeI-63

Alpha std., plutonium-238 Sodium-22 Sodium-22

Carbon-14 (water)

Carbon-14 (benzoic acid in toluene) Hydrogen-3 (water) Hydrogen-3 (water) lron-55 Krypton-85

Promethium-147

Cobalt-57

Chlorine-36 Hydrogen-3 (tritiated toluene) . . .

.

Cerium-Praseodymium-144

Radium solution std., lO"^ Radium solution std., 10"11 Radium blank solution Radium, 10"* Radium solution std., 0.1 fig Radium solution std., 0.2 fig Radium solution std., 0.5 fig Radium solution std., 1 Mg Radium solution std., 2 Mg Radium solution std., 5 Mg Radium solution std., 10 Mg Radium solution std., 20 Mg Radium solution std., 50 Mg Radium solution std., 102 Mg

Carbon-14, Oxalic acid

Sodium-22

Point-source - Mercury-203

Point-source - Sodium-22

Point-source - Manganese-54

Point-source - Yttrium-88

Point-source- Cerium-1 39 Uranium oxide - dep Uranium oxide - enr Uranium oxide - enr Uranium oxide - enr

Uranium oxide - enr Uranium oxide - enr Uranium oxide - em

Uranium oxide - enr Uranium oxide - enr

Uranium oxide - enr Uranium oxide - enr Uranium oxide - enr Uranium oxide - enr Uranium oxide - enr

Uranium oxide - enr Uranium oxide - enr

(U 235) (U 235) (U 235) (U 235)

(U 235) (U 235) (U 235) (U 235) (U 235)

(U 235) (U 235) (U 235) (U 235) (U 235)

(U 235) (U 235)

Unit

ea $ 86.00 3g 55.00

55 00

S"? (\C\

5 g 90.00 4g 148.50

1

1 J^fio.UU nn

A1 (\{\ 61.00

25 g 48.00

-* g 48.00

g 48 00

^ g

4.R on

J a

B 59.00 10 ml 100.00

^ B 60 00

108,00

-* B 43.00

46.00

3.3 g 70.00

20 e 81.00

L\J\J 100 Qg 48.00

1 no o 30.00 20 p 81.00 5g 63.00

J 6 63.00

g 63.00

-J g 63.00

•5 g 63,00 5g 63.00

J g 63 00

^ g

ft'K fin

< n nn

J g ^1 nn

1 lb 26.50

ea 7Q nn

ea fii nn

ea 7Q nn

s nn

ea 77.00

ea 60 00

1 g

4'> ^n

1 g 42.50

1 g

d.? sn

1 g 43.00

1 g 43 00

1 g 43 00

1 g 44.00

1 g 45.00

1 g 45.50

1 g 48 50

1 g 50.00

1 g 55.50

1 g 56.00

1 g 57.00

1 g 58.00

1 g 59.50

5
SECTION II STANDARD REFERENCE MATERIALS

NEW - RENEWALS

Category 3.1.

SRM 36b Steel — Cr-2% Mo-1% — Chip form has been issued. The Certificate of Analysis

shows C 0.1 14, Mn 0.404, P 0.007, S 0.019, Si 0.258, CuO.18, Ni 0.203,

Cr 2.17, V 0.004, Mo 0.996. The material is priced at $33.00 per 150 g unit.

SRM 131b Silicon Steel — low carbon — Chip form has been issued. This material is issued

with a Certificate of Analysis for carbon only at 0.0018%. It is priced at $27.00

for a 100 g unit.

SRM 163 Chromium Steel — Powder form has been issued. The Certificate of Analysis

gives the following: C 0.933, Mn 0.897, P 0.007, S 0.027, Si 0.488, Cu 0.087,

Ni 0.081, Cr 0.982, Mo 0.029, N 0.007. The material is priced at $40.00 per

100 g unit.

SRM 101 f Stainless Steel — AISI Type 304L in powder form has been issued with a Provisional Certificate of Analysis for the following composition: C 0.014,

Mn 0.085, P 0.007, S 0.008, Si 0.88, Cu 0.029, Ni 10.10, Cr 18.47, V 0.038,

Mo 0.008, Co 0.088. The material is priced at $33.00 per 100 g unit.

SRM 178 Steel — Basic Oxygen Furnace — 0.4C — Chip form has been issued with a Provisional Certificate of Analysis. The nominal composition is: C 0.40,

MnO.82, P 0.012, S 0.013, Si 0.16, Cu 0.032, Ni 0.010, Cr 0.016, V 0.001,

Mo 0.002. The material is priced at $33.00 per 150 g unit.

SRM 1 60b Stainless Steel — AISI Type 3 1 6 in chip form has been issued with a Provisional

Certificate of Analysis. The nominal composition is: C 0.046, Mn 1.64,

P 0.020, S 0.018, Si 0.51, Cu 0.172, Ni 12.3, Cr 18.4, V 0.047, Mo 2.38,

Co 0.10, N0.04, Pb 0.001. The material is priced at $33.00 per 150 g unit.

Similar material in solid form is available as SRM 1 155.

Category 3.2.

SRM 1093 Valve Steel - Has been issued with a Provisional Certificate of Analysis and is certified for oxygen at 60 ppm. It is intended primarily for use in neutron

activation analysis. The material is priced at $55.00 for a rod inch (0.6 cm)

in diameter and 4 inches (10 cm) long.

SRM 1 094 Maraging Steel - Has been issued with a Provisional Certificate of Analysis for

oxygen at 4 ppm. It is intended primarily for use with the vacuum or inert gas

fusion methods. The material is priced at $55.00 for a 4 inch (10 cm) length,

inch (0.6 cm) in diameter.

SRM 1155 Stainless Steel — AISI Type 3 1 6 has been issued with a Provisional Certificate of

Analysis. The material is a disk VA inches (3.1 cm) in diameter and % inch (1.9

cm) thick and is intended primarily as a spectrometric standard. The nominal

composition is: C 0.046, Mn 1.63, P 0.020, S 0.018, Si 0.50, CuO.169,

Ni 12.1, Cr 18.4, V 0.047, Mo 2.38, Co 0.10, Pb 0.001. The material is priced

at $65.00 each. Similar material in chip form is available as SRM 160b.

6
Category 3.3.

SRM 5L Cast Irons — Chip form SRMs have been issued with a Provisional Certificate of

6g Analysis. Nominal values for each are: 342a

122e

SRM

Nos. Total C Graph. C Mn P S Si Cu Ni Cr V Mo Ti As N Mg

5L 2.59 1.99 0.68 0.280 0.123 1.83 1.01 0.086 0.15 0.036 0.020 0.05 0.006

6g 2.84 2.00 1.06 .56 .123 1.06 0.50 .136 .37 .06 .035 .06 0.04 .006

342a 1.86 1.38 0.275 .018 .006 2.73 .14 .06 .034 .020 0.069

122e 3.51 2.78 .528 .349 .074 0.510 .033 .080 (.038) (.032) (.001) (.026) (.018) (.009)

Each of the materials sells as a 150 gram unit. The price is: 5L-$40.50;

6g-$36.00;342a-$35.00;and 122e-$33.00.

Category 3.4.

SRM 1 138 Cast Steel Standards — These standards are intended primarily as spectrometric

1 139 standards and are sold as chill-cast specimens, PA inches (3.1 cm) square and V2

inch (1.3 cm) thick. They are issued with a Provisional Certificate of Analysis

at $65.00 each. The nominal composition is: SRM

Nos. C Mn P S Si Cu Ni Cr V Mo

1138

1139

0.120

.792

0.43

.98

0.053

.011

0.053

.013

0.34

.85

0.09

.40

0.10

.9

0.12

1.96

0.02

0.24

0.05

0.51

SRM 1140 Ductile Iron Standard — These standards are intended primarily for spectro1 141 metric analysis and are issued as chill-cast specimens IV4 inches (3.1 cm) square

1 142 and Vz inch (1.3 cm) thick. Each sample is issued with a Provisional Certificate

of Analysis and priced at $65.00. The nominal composition of the standards is: SRM

Nos. C Mn P S Si Cu Ni Cr V Mo Ti Al As Mg Ce Y

1140 3.18 0.72 0.007 0.010 1.92 0.10 0.028 0.030 0.030 0.09 0.10 (0.01) (0.07) 0.019 (0.09)

1141 3.64 .48 .072 .020 1.11 .21 .54 .14 .009 .05 .013 (.005) (.04) .044 (.05) .04 1142 2.94 .18 .20 .015 3.33 1.0 1.6 .05 .006 .02 .008 (.09) (.015) .10 (.015) .01 SRM 1 143 Blast Furnace and White Iron Standards — Intended primarily for spectrometric

1144 analysis have been issued with a Provisional Certificate of Analysis. These

1147 materials are chill-cast specimens 1^4 inches (3.1 cm) square and ¥2. inch (1.3

1148 cm) thick with the nominal composition hsted below. They are priced at

1149 $65.00 each.

SRM

Nos. C Mn P S Si Cu Ni Cr V Mo Ti As Te

1143

1144

1147

1148

1149

3.9 4.27

3.60

2.89

3.28

0.41 1.33 0.78

.66 1.05

0.16

.11 .16 .30

.6

0.028

.021

.06

1.68 0.27

1.31 1.82

1.04

0.14

.09

.23

1.0 0.50

0.11

.021 .070

.09

.14

0.14

.019

.093

.15 .36

0.008

(0.007)

(.079)

(.022)

(.038)

0.17

.4.05

.05 .06

(0.019)

(.026)

(.018)

(.015)

(.015)

.03

.04

.05

(0.020)

.125 (.033)

7
SRM 1 174a White Cast Iron Standards — renewal - Chill-cast specimens VA inches (3.1 cm)

1175a square and Vi inch (1.3 cm) thick issued primarily for use with spectrometric

methods of analysis. The Certificate of Analysis shows the following

composition:

SRM

Nos. C Mn P S Si Cu Ni Cr V Mo Co Sn Ti As B Sb Te Pb

1174a

1175a

3.46

1.98

0.180

1.62

0.168

.648

0.168

.018

0.283

3.47

0.170 . 0.035

1.50 2.99

0.018

2.41

0.008

.222

0.008

1.49

0.009

.11

0.23

.025

0.011

.35

0.024

.19

0.04

.005

0.17

.02

0.07 .009

(0.01)

0.006

Each standard sells for $65.00.

Category 3.5.

SRM 196

SRM 340

SRM 59a

SRM 127b

Ferrochromium (low carbon) powder form — This is a steel making alloy issued

with a Provisional Certificate of Analysis with the following values: C 0.035,

Mn 0.28, Si 0.38, Cr 70.87, and V 0.12. The material is issued in 100 g units

priced at $45.00.

Ferroniobium — powder form — This steel making alloy is issued with a Provisional Certificate of Analysis having the following values: C 0.060, Mn 1.71,

Si 4.39, Nb 57.51, Ta 3.73, Ti 0.89 and P 0.035. The material is priced at

$45.00 per 1 00 g unit.

Ferrosilicon — powder form — Has been issued with a Provisional Certificate of

Analysis having a nominal composition of: C 0.04, Mn 0.76, P 0.016, Si 48.2,

Cu 0.05, Ni 0.03, Cr 0.08, Al 0.35, B 0.06, Ca 0.04 and Fe 50.0. The material

is priced at $40.00 per 50 g unit.

Category 3.6.

Solder 40Sn-60Pb — powder form — Has been issued with a Provisional Certificate of Analysis. The nominal composition is: Sn 39.3, Sb 0.43, As 0.01,

Bi0.06, Cu 0.011, Ni 0.012, AgO.Ol. The material is priced at $33.00 per

1 50 g unit.

SRM 1159

1160

Category 3.9.

Electronic and Magnetic Alloy Standards These standards are issued in disk

form, Wa. inches (3.1 cm) in diameter and % inch (1.9 cm) thick, intended

primarily for calibration of optical emission and x-ray spectrometric methods.

They are issued with a Provisional Certificate of Analysis and have a nominal

composition of:

SRM

Nos. C Mn P S Si Cu Ni Cr Mo Co Fe

1159

1160

0.007

.019

0.30

.55

0.003

.003

0.003

.001

0.32

.37

0.038

.021

48.2

80.3

0.06

.05

0.01

4.3

0.022

.054

51.0

14.3

SRM 1131

The materials are priced at $65.00 each.

Category 3.10.

Solder 40Sn-60Pb - This standard is issued with a Provisional Certificate of

Analysis and has the same nominal composition as SRM 127b, in Category 3.6.

This material, however, is in disk form, 1% inches (3.1 cm) in diameter and %

inch (1.9 cm) thick, intended primarily for calibration of optical emission and

x-ray spectrometric methods of analysis. The price is $50.00 each.

8
Category 3.18.

SRM 1051b Barium cyclohexanebutyrate — Has been issued with a Certificate of Analysis.

It has a nominal composition of 28.7% Ba and is priced at $31.00 per 5 gram

unit.

SRM 1052b Bis(l -phenyl- l,3-butanediono)oxovanadium (IV) — Has been issued with a Certificate of Analysis. It has a nominal composition of 13.0% V and is priced

at $31.00 per 5 gram unit.

SRM 1055b Cobalt cyclohexanebutyrate — Has been issued with a Certificate of Analysis. It has a nominal composition of 14.8% Co and is priced at $31.00 per 5 gram

unit.

SRM 1057b Dibutyltin bis(2-ethylhexanoate) — Has been issued with a Certificate of

Analysis. It has a nominal composition of 23.0% Sn and is priced at $31.00 per

5 gram unit

SRM 1059b Lead cyclohexanebutyrate — Has been issued with a Certificate of Analysis. It has a nominal composition of 36.7% Pb and is priced at $31.00 per 5 gram

unit.

SRM 1061b Magnesium cyclohexanebutyrate — Has been issued with a Certificate of

Analysis. It has a nominal composition of 6.5% Mg and is priced at $31.00 per

5 gram unit.

SRM 1066a Octaphenylcyclotetrasiloxane — Has been issued with a Certificate of Analysis.

It has a nominal composition of 14.1% Si and is priced at $31.00 per 5 gram

unit.

SRM 1069b Sodium cyclohexanebutyrate — Has been issued with a Certificate of Analysis.

It has a nominal composition of 12.0% Na and is priced at $31.00 per 5 gram

unit.

SRM 1073b Zinc cyclohexanebutyrate — Has been issued with a Certificate of Analysis. It has a nominal composition of 16.7% Zn and is priced at $31.00 per 5 gram

unit.

SRM 1077a Silver 2-ethylhexanoate — Has been issued with a Certificate of Analysis. It has

a nominal composition of 42.6% Ag and is priced at $31.00 per 5 gram unit.

Category 3.19.

SRM 148 Nicotinic Acid — Micro Analytical Standard — Has been issued with a Provisional Certificate of Analysis. This material is furnished as a fine powder of

suitable homogeneity for microchemical methods. The nominal composition

is: C 58.54, H 4.09, N 1 1.38. The material is priced at $23.50 per 2 gram unit.

SRM 1800 Micro Standard Ion Exchange Beads with Calcium — Have been issued with a Provisional Certificate of Analysis. These materials are ion-exchange resins containing known adsorbed quantities of metallic counterions. The actual amount

of counterion' may be calculated from the diameter of the resin bead. Actual

amounts of counterion present will be in the microgram, nanogram and the

picogram range. The individual beads are supplied in quantities of 100 or more

cast on a glass slide. The price is $ 1 30.00 per slide.

9
Category 3.20.

SRM 40h Sodium Oxalate - Primary Standard has been issued on a Provisional Certificate of Analysis with an effective purity of 99.95%. This material is priced at $26.00 per 60 gram unit.

SRM 41a Dextrose (Glucose) - Primary chemical has been issued with a Certificate of

Analysis for specific rotation. The material sells for $26.00 per 70 gram unit.

SRM 728 Intermediate Purity-Zinc — Has been issued with a Provisional Certificate of

Analysis for impurities. The nominal values are: Pb 11.1 ppm, Cu 5.7 ppm,

Fe 2.7 ppm, Cd 1.1 ppm, Ag 1.1 ppm, Th 0.2 ppm and Sn 0.02 ppm. The

material is sold as pellets and is priced at $43.00 per 450 gram unit.

SRM 951 Boric Acid Primary Standard — Has been issued with a Certificate of Analysis

for purity (nominally 100.00%) and isotopic composition of the boron. It is priced at $55.00 per 100 gram unit.

SRM 952 Boric Acid — B-10 enriched — Has been issued with a Certificate of Analysis.

The material is nominally 99.97% pure and is certified for Boron isotopic

composition with an Absolute Abundance Ratio 10-B/ll-B of 18.80. It is priced at $40.00 per 0.25 gram unit.

Category 3.21.

SRM 944 Plutonium Sulfate Tetrahydrate — Has been issued with a Certificate of

Analysis. It is intended as a secondary standard for the assay of Plutonium

materials and is nominally 47.50% Pu. It is priced at $70.00 per 0.5 gram of Pu

and is available only to Atomic Energy Commission contractors and licensees.

Order forms and further information may be obtained from the Office of

Standard Reference Materials, National Bureau of Standards, Washington, D.C.

20234.

SRM 953 Neutron Density Monitor Wire Standard — Has been issued with a Certificate of

Analysis for cobalt. The nominal composition is 0.116% cobalt in aluminum.

The price is $35.00 per 1 meter length with longer continuous lengths available

upon request.

Category 3.23.

SRM 1604- Certified Gas Standards - Have been issued with a Certificate of Analysis. The

1609 nominal composition of the gases is:

SRM No. Kind Certified Value

1604 Oxygen in nitrogen O2 3 ppm

1605 Oxygen in nitrogen O2 10 ppm

1606 Oxygen in nitrogen O2 112 ppm

1607 Oxygen in nitrogen O2 21 2 ppm

1608 Oxygen in nitrogen O2 978 ppm

1609 Oxygen in nitrogen O2 20.95 mole percent

Gases are sold in cylinders containing 68 liters at STP. The price is $1 10.00 per

cylinder.

10
Category 3.24.

SRM 911

SRM 912

SRM 913

SRM 914

SRM 915

SRM 680

681

Cholesterol — Has been issued with a Provisional Certificate of Analysis of

99.4% purity. Its intended use is for standardizing clinical determinations of

cholesterol. It is priced at $30.00 per 0.5 gram unit.

Urea — Has been issued with a Certificate of Analysis at 99.7% purity with an

estimated accuracy of 0.1%. Its intended use is for calibration and standardization of procedures employed in clinical analysis. It is priced at $36.00 per 25

gram unit.

Uric Acid — Has been issued with a Certificate of Analysis. The material is 99.7% pure with an estimated accuracy of 0.1%. Its intended use is for calibration and standardization of procedures employed in clinical analysis. The

material is priced at $30.00 per 10 gram unit.

Creatinine — Has been issued with a Certificate of Analysis. The material is 99.8% pure with an estimated accuracy of 0.1%. Its intended use is for calibration and standardization of procedures employed in clinical analysis. It is priced at $36.00 per 10 gram unit.

Calcium Carbonate — Has been issued with a Certificate of Analysis. The

material is 99.9% pure with a water content of 0.01%. Its intended use is for

calibration and standardization of procedures employed to determine calcium

in clinical analysis. It is priced at $30.00 per 20 gram unit.

Category 3.25.

High Purity and Doped Platinum — Have been issued with a Provisional Certificate of Analysis. The nominal composition of impurities (in ppm) of these

standards is: SRM

Nos. Cu Ag Pd Pb Fe Ni Au Mg Zr Rh Ir 0

680

681

0.1

5

0.1 2.00.2 61 12

0.7

5

10.5

1.0 91 120.1 110.2

9

0.01 114

7

These materials are in the form of wire 0.020 inch (0.5 mm) in diameter and

are priced at $40.00 each for a 4 inch (10 cm) length designated L-1 and

$190.00 each for a 1 meter length designated L-2.

SRM 682 High-Purity Zinc — Has been issued with a Provisional Certificate of Analysis. It

is a special research material of high purity with the following nominal

impurity content: Cu 0.042 ppm, Cd 0.1 ppm, Fe 0.1 ppm, Ag 0.02 ppm, and

Sn 0.02 ppm. Additionally, upper limits are supplied for 17 other elements.

The material is issued in the form of a semicircular bar segment 2^4 inches

(5.7 cm) across, 1 inch (2.5 cm) high and '^ inch (1.9 cm) thick, priced at $90.00 each.

SRM 683 Zinc Metal - Has been issued with a Provisional Certificate of Analysis for

trace impurities with a total impurity level of about 25 ppm. The nominal

concentration of impurities is Pb 11.1 ppm, Cu 5.9 ppm, Fe 2.2 ppm, Ag 1.3

ppm, Cd 1.1 ppm, Tl 0.2 ppm, and Sn 0.02 ppm. Additionally, elements not

detected as being present are listed with upper limits for each. The material is issued in the form of a semicircular bar segment 2V4 inches (5.7 cm) across,

1 inch (2.5 cm) high and % inch (1.9 cm) thick, priced at $55.00 each.

n
SRM 685 High-Purity Gold - Has been issued with a Provisional Certificate of Analysis

for trace impurities. The nominal impurity level of this material is: Cu 0.1 ppm,

In 0.007 ppm, Fe 0.3 ppm (wire)-0.2 ppm (rod), oxygen 2 ppm and Ag 0.1

ppm. Additionally, upper limits are given for all other elements detected as being present. The material is available in the form of a rod % inch (0.6 cm) in

diameter and 1 inch (2.5 cm) long, designated 685-R, or in the form of a wire

1.4 mm in diameter and 4 inches (10 cm) long, designated 685-W. Each is priced at $55.00.

Category 3.26.

SRM 1621 Sulfur in Residual Fuel Oil — Has been issued with a Certificate of Analysis for

1622 sulfur content. Nominally the values are:

SRM Nos.

1621 Sulfur content 1.05 1622 Sulfur content 2.14

Each is priced at $30.00 per 100 ml unit.

Category 3.27.

SRM 480 Tungsten - 20% Molybdenum - Electron Microprobe Standard - Has been

issued with a Provisional Certificate of Analysis. The material is a composite

disk 6 mm in diameter and 1 mm thick. The central core is tungsten alloy with

a nominal composition of W 78.5%, Mo 21.5%. It is surrounded with a pure

molybdenum layer and then an electroplated layer of pure tungsten. The standard is priced at $125.00 each.

SRM 481 Gold-Silver Wires — For use as electron microprobe standards have been issued

with a Certificate of Analysis. The material consists of a set of 6 separate wires

0.5 mm in diameter and 5 cm long including one high-purity gold, one highpurity silver, and 4 alloy standards with nominal compositions of 20, 40, 60,

and 80 percent Ag, respectively. Each wire is color coded for clear identification. The set is priced at $130.00.

SRM 482 Gold-Copper Wires - For electron microprobe use have been issued with a Certificate of Analysis. The material consists of 6 separate wires 0.5 mm in

diameter and 5 cm long, including a high-purity gold and high-purity copper

wire and 4 gold-copper alloys with a nominal composition of 20, 40, 60, and

80 percent copper, color coded for easy identification. The set is priced at $130.00.

Category 4.1.

SRM 191 Sodium Bicarbonate — Sodium Carbonate — pH standards have been issued

192 with a Certificate of Analysis for a pH of 10.01 at 25 °C. These materials

provide the certified pH when mixed in an equimolar solution. The two

materials are priced at $33.00 each per 30 g unit.

SRM 2186 I Potassium Dihydrogen Phosphate — Disodium Hydrogen Phosphate — pD stan2186 II dards have been issued with a Certificate of Analysis for a pD of 7.43 at 25 °C

in deuterium oxide. These materials provide the certified pD when mixed in a deuterium oxide solvent. These two materials are priced at $41.00 each per

30 g unit.

12
SRM 2191 Sodium Bicarbonate — Sodium Carbonate — pD standards have been issued

2192 with a Certificate of Analysis for a pD of 10.74 at 25 °C in deuterium oxide.

These materials provide the certified pD when mixed in a deuterium oxide

solvent. These two materials are priced at $41.00 each per 30 g unit.

Category 4.4.

SRM 1651- Heat Source Powders for Calorimetry — Have been issued. These materials are 1653 mixtures of zirconium and barium chromate and are suitable for use as a standard for calorimetry of gasless heat-source (thermite-type) materials. The

nominal heating value of each of these standards is:

SRM Nos. Heating Value

1651 350 cal/g

1652 390 cal/g

1653 425 cal/g

Each of these materials is priced at $55.00 per 50 gram unit.

Category 4.5.

SRM 4905 Plutonium-238 — Alpha Standard — Has been issued with a Certificate. The

approximate activity level in 2^1 geometry is 6x 10^ dps. The plutonium is electrodeposited on a 0.010 cm platinum disk cemented to a monel disk 2.5 cm

in diameter. The price of this standard is $83.00.

SRM 4906 Plutonium-238 — Alpha Standard — Has been issued with a Certificate. The

standard consists of Pu-238 electroplated onto a 0.010 cm thick platinum foil

which is cemented to a monel disk 2.5 cm in diameter and 0.16 cm thick. The

nominal activity level of this material is 1.4x10^ to 3.4x10^ nuclear

transforms per sec (4/69) and it is priced at $158.00 per standard.

Distribution of SRM 4905 and 4906 is limited to those licensees whose license

authorizes them to receive special nuclear materials, and it is required that a copy of the purchaser's license be on file at the National Bureau of Standards.

SRM 4222- Carbon- 14 (n-hexadecane) - Has been issued with a Certificate for Beta

4224 activity. These materials are sold in flame-sealed ampoules containing 3 ml of

solution. The approximate activity level of each standard is:

SRM Nos. Activity

4222 4 X 10'*dps/g (6/67)

4223 4 X lO-'dps/g (6/67)

4224 4x 10^dps/g(6/67)

Each of these standards is priced at $55.00.

SRM 4225 Tin-1 13 - Indium- 1 13 -.Has been issued with a Certificate for gamma activity

at approximately 1x10^ gammas/sec/g (4/68). It is issued in a flame-sealed

glass ampoule containing 5 ml of solution and priced at $90.00.

13
SRM 4226

SRM 4940-B

SRM 4935-C

SRM 4941-C

SRM 4235

SRM 4200-B

4202

4205

4206

4207

4208

4209

4210

Nickel-63 — Has been issued with a Certificate for gamma activity at approximately 1.5 X 10^ nuclear transformations per second per gram. It is issued

in a flame-sealed glass ampoule containing 4 ml of solution and priced at $148.50.

Note: For purchase of these materials (4225 and 4226), it is required that a copy of the purchaser's current AEC By-Product Material License be on file at the National Bureau of Standards.

Promethium-147 — Has been issued with a Certificate for Beta activity at

approximately 5 x 10^ dps/g (11/67). It is sold in a flame-sealed ampoule

containing 3 ml of solution and is priced at $60.00.

Krypton-85 — Has been issued with a Provisional Certificate. This material

consists of Krypton-85 and inert Krypton contained in a break seal glass

ampoule of about 10 ml volume at 1 atmosphere pressure. The Krypton has a nominal activity of 7x 10"^ (7/69) nuclear transformations per second per

mole. This standard is priced at $100.00 per ampoule.

Cobalt-57 — Has been issued with a Certificate for approximately 3x 10^

nuclear transformations per second per gram. It is issued in a flame-sealed glass

ampoule containing 5 ml of solution and priced at $108.00.

Krypton-85 — Has been issued with a Provisional Certificate. This material

consists of Krypton-85 and inert Krypton contained in^ a break seal

glass ampoule of about 3 ml volume at 1 atmosphere pressure. The Krypton has

a nominal activity of 7 x 10^ nuclear transforms per second and is priced at

Gamma-Ray Point-Sources — Have been issued with a Certificate. The material

is deposited between two layers of polyester tape and mounted on an aluminum annuli 0.8 cm wide with an outside diameter of 5.5 cm. The material,

approximate activity and price are hsted below:

SRM Nos. Material Activity Price

4200-B

4202

4205

4206

4207

Cesium- 137

Cadmium- 109

Thorium-228

Thorium-228

Cesium-137

4 X lO"^ 2.62 MeV gammas/sec (8/68)

5 X 10^ 2.62 MeV gammas/sec (8/68) 4 X 10^ gammas/sec (12/68)

6 X lO"* gammas/sec (12/68)

1 X 10^ gammas/sec (12/67)

$60.00

93.00

98.00

98.00

60.00

4208

4209

4210

4991-C

4995-C

4996-B

4998-E

Mercury-203

Yttrium-88

Cobalt-60

Sodium-22

Mercury-203

Sodium-22

Yttrium-88

4 X 10^ 1.84 MeV gammas/sec (5/69)

2 X 10^ gammas/sec (4/69)

6 X 10^ gammas/sec (6/69) 83.00

77.00

86.00

79.00

83.00

79.00

77.00

6 X 10 1.28 MeV gammas/sec (4/69)

1.5 X 10^ gammas/sec (6/69)

3 X 10^ 1.28 MeV gammas/sec (4/69)

1 X 10^ 1.84 MeV gammas/sec (5/69)

14
SRM 495 0-B

4952-A

4953

Radium Solution Standards — These materials have been issued with a Certificate for Radium-226 content and are packaged in flame-sealed ampoules. The

sample, size and price are:

SRM Nos. Material Size Price

4950-B

4952-A

4953

10-^

g (1956) 20 g sol. 100 g 20 g

$81.00

30.00

81.00

Blank Solution

8x 10"^

g (1968)

Category 4.6.

SRM 370d

SRM 37 If

SRM 372g

SRM 382a

SRM 385b

SRM 386g

SRM 388e

SRM 391

SRM 1002b

Zinc Oxide — Rubber compounding material has been issued. This material has

been evaluated for uniformity and imparts the same characteristics to rubber

vulcanizates as did previous lots of the material. No certificate is issued. The

material is priced at $33.80 per 2 kg unit.

Sulfur — Rubber compounding material has been issued. This material has been

evaluated for uniformity and imparts the same characteristics to rubber vulcanizates as did previous lots of the material. No certificate is issued. The material

is priced at $38.00 per 6 kg unit.

Stearic Acid — Rubber compounding material has been issued. This material

has been evaluated for uniformity and imparts the same characteristics to rubber vulcanizates as did previous lots of the material. No certificate is issued.

The material is priced at $31.00 per 600 g unit.

Gas Furnace Black — Rubber compounding material has been issued. This

material has been evaluated for uniformity and imparts the same characteristics

to rubber vulcanizates as did previous lots of the material. No certificate is issued. The material is priced at $52.00 per 7.5 kg unit.

Natural Rubber — Has been issued with a Certificate which characterizes the

performance of the materials when tested in the prescribed manner. The material is priced at $ 105.00 per 34 kg unit.

Styrene Butadiene Rubber - Has been issued with a Certificate which characterizes the performance of the materials when tested in the prescribed manner.

The material is priced at $67.00 per 34 kg unit.

Butyl Rubber — Has been issued with a Certificate which characterizes the

performance of the materials when tested in the prescribed manner. The

material is priced at $ 105.00 per 34 kg unit.

Acrylonitrile-Butadiene Rubber — Has been issued with a Certificate which

characterizes the performance of the materials when tested in the prescribed

manner. The material is priced at $ 105.00 per 25 kg unit.

Hardboard — Has been certified as a standard reference material for surface

flammability. This material has a nominal flame spread index of 210. It is priced at $35.00 per set of 4 specimens of hardboard, each 6 inches (15.2 cm)

by 18 inches (45.7 cm), inch (0.6 cm) thick.

15
Category 4.21.

SRM 1351- Coating Thickness Standards - These materials have been previously issued as 1353 single items and are now available in sets. See the original catalog for descripSRM 1361- tion. Sets of two standards are priced at $35.00 and sets of four standards are 1367 priced at $47.00.

SRM

Nos. (Sets of Two Standards Mounted on One Card)

1351 1307 and 1311

1352 1332 and 1334

1353 1335 and 1339

SRM

Nos. (Sets of Four Standards Mounted on One Card)

1361 1302, 1303, 1305 and 1307

1362 1306, 1310, 1311 and 1312

1363 1313, 1314, 1315 and 1316

1364 1317, 1318, 1319 and 1320

1365 1331, 1332, 1333 and 1334

1366 1335, 1336, 1337 and 1338

1367 1341, 1342, 1343 and 1344

SRM 1371- Gold Coating Thickness Standards — (on Fe-Ni-Co glass sealing alloy) — Have

1 374 been issued and are certified for gold thickness. They are available singly priced

SRM 1381- at $48.00, in sets of two mounted on one card at $73.00 and in sets of four

1 383 mounted on one card at $ 1 23.00.

SRM 1398

SRM Nominal Coating Wt. Nominal Thickness

Nos. (mg/cm2) (micro inches)

1371 1.5 30

1372 3.0 60

1373 6.0 120

1374 14.0 280

1381 1.5 and 3.0

1382 3.0 and 6.0 1383 6.0 and 17.0 1398 1.5, 3.0, 6.0 and 17.0

SRM 1375- Gold Coating Thickness Standards (on Nickel) — These materials have been

1378 issued and are Certified for gold thickness. They are available on one card

SRM 1384- priced at $73.00, or in sets of four mounted on one card priced at $123.00.

1386

SRM 1399

SRM Nominal Coating Wt. Nominal Thickness Nos. (mg/cm2) (micro inches)

1375 1.5 30

1376 3.0 60

1377 6.0 120

1378 17.0 350

1384 1.5 and 3.0

1385 3.0 and 6.0 1386 6.0 and 17.0 1399 1.5, 3.0, 6.0 and 17.0

16
Category 4.23.

SRM 3200 Secondary Standard Magnetic Tape — Computer Amplitude Reference — Has

been issued with a Certificate describing the tape performance under specified

conditions. The tape is intended for use in the signal amplitude calibration of

computer tape recording and reproducing systems. It is priced at $695.00 per

600 ft. (183 m) reel.

SRM 1511 Cyclohexane — for the determination of dielectric constants — Has been issued

with a Certificate giving the dielectric constant nominally as 2.015 at 25 °C.

The material is priced at $125.00 per 500 ml unit.

Category 4.27.

SRM 1591 l,2-0-IsopropyHdene-|3-idofuranase — Has been issued with a Certificate of

Analysis for identity, melting point and specific rotation. The material is priced

at $35.00 per 15 mg unit.

SRM 1592 2,3-0-Isopropyhdene-j3-threo-pentulose — Has been issued with a Certificate of

Analysis for identity, melting point and specific rotation. The material is priced

at $35.00 per 50 mg unit.

SRM 1593 L-Inositol — Has been issued with a Certificate of Analysis for identity, melting

point and specific rotation. The material is priced at $35.00 per 250 mg unit.

SRM 1594 Quebrachitol — Has been issued with a Certificate of Analysis for identity,

melting point and specific rotation. The material is priced at $35.00 per

500 mg unit.

SRM 2175 Ethane-dg — Has been issued with a Certificate of Analysis. The chemical

purity is nominally 99.9 mole percent and isotopic purity is nominally 99.8

atom percent deuterium. The material is priced at $320.00 per 5 cm^ at STP.

SRM 2176 Propane- 1,1,1 -da — Has been issued with a Certificate of Analysis. The nominal

chemical purity is 99.9 percent and nominal isotopic purity is 99.4 mole percent CD3C2HS . The material is priced at $1 155.00 per 5 cm^ at STP.

SRM 745 Gold-vapor pressure standard — Has been issued with a Certificate of Analysis. The material is a wire 6 inches (15.2 cm) long and 1.4 mm in diameter

certified for vapor pressure between 1300 °K and 2100 °K. It is priced at $85.00.

17
SECTION III MATERIALS OUT OF STOCK

The Materials listed below have gone out of stock since the last catalog was issued. Since funds

and faciUties are limited, materials which are out of stock are not always renewed but rather,

renewals are based on current needs and funds available. If the material you need is not

available, please contact the Office of Standard Reference Materials.

SRM

Nos. KIND COMMENTS

20f Steel A.O.H. 0.4C

77 Burned refractory 60% AI2O2

78 Burned refractory 70% AI2O2

102 SiUca brick

120a Phosphate rock

12 2d Cast iron 129b Steel - hi-sulfur 149 o-Fluorobenzoic acid 154a Titanium dioxide

156 Steel - Cr-Ni-Mo

166b Steel - Cr-19, Ni-9

169 Ni-77, Cr-20

172 Ferroboron

370c Zinc oxide

37 le Sulfur

372d Stearic acid 374b Tetramethylthiuram disulfide ...... 382 Gas furnace black

386f Styrene-butadiene type 1500

388d Butyl rubber

390 Butyl (Mooney Viscosity only)

653 Titanium - 6A1-4V

654 Titanium - 6AI-4V

802 Steel B.O.H. 0.8C

848 Stainless steel

949b Plutonium metal

1018 Calibrated glass spheres

1041 Steel - medium carbon (for oxygen)

1161 Low alloy steel A

1162 Low alloy steel B

1164 Low alloy steel D

1169 Leaded steel 1190 Udimet 500

1193 W545

1195 Discaloy 24

1204 Inco 713-B

1205 Inco 713-C

1211 Zirconium metal B

1215 Zircaloy - 2F

1501 Permittivity std. - glass 1723

Renewed with 122e

Renewal available in near future

Renewed with 370d

Renewed with 37 If Renewed with 372g

Renewed with 382a

Renewed with 386g

Renewed with 388e

388e suggested as a substitute

448 and D848 have the same composition

Renewal available in near future

Replacement available in near future Replacement available in near future

Replacement available in near future

18
SRM

Nos. KIND COMMENTS

1552 Permittivity std. - fused silica 4201 Niobium-94

4221 Mercury-197 Issued periodically, please write for details. 4902 Polonium-210

4904C Americium-241

4935-B Krypton 85 Renewed with 4935C

4944-D Iodine-125

4952 Blank solution (Radium) Renewed with 495 2A

4991-B Sodium 22 Renewed with 499 1-C

Category 4.25.

Carbon- 14 Labeled Sugars — have been discontinued

SRM 1526 thru 1540 - discontinued

SRM 1551 thru 1562 - discontinued

SRM 1575 - discontinued

19
SECTION IV

CHANGES IN PURCHASE PROCEDURE

ORDERING

GENERAL

Orders should be addressed to the Office of Standard Reference Materials, National Bureau

of Standards, Washington, D.C. 20234, and should give the amount, catalog number and name of

the standards requested. For example: 150g of No. llh Basic-Open-Hearth Steel, 0.2 percent C.

These materials are distributed only in the units listed. Acceptance of orders does not imply

acceptance of any provision set forth in this order contrary to the policy, practice or regulations

of the National Bureau of Standards of the U.S. Government. Prices as listed in this Catalog are subject to change without notice. Price changes when made are first announced in various NBS

pubhcations, especially the Technical News Bulletin, and in announcements mailed to users of

these materials. Prices in effect at time of shipment will be billed to the purchaser.

FOREIGN ORDERS

A. Prepaid orders will be processed and shipped within 5 days. (See mode of shipmentForeign Shipments.) Prepayment may be made by any of the following:

1. UNESCO coupons;

2. Bankers' draft against U.S. bank;

3. Bank to bank transfer on U.S. bank;

4. Letter of credit on a U.S. bank;

5. International Money Order.

All checks, coupons, etc., should be made payable to the National Bureau of Standards

and must be in U.S. dollars.

B. Non-prepaid purchase orders from old customers with established credit will be processed within 10 days. Variations in prices and quantities shipped will be noted on invoices.

Upon receipt of goods, payment can be made by any of the methods listed under A.

C. Pro-forma service takes from 6-8 weeks for processing. Customers are urged to use method A or B for fast service. Payment may be by any of the means shown under A above.

TERMS AND SHIPPING

DOMESTIC SHIPMENTS

Shipments of material (except for certain restricted categories, e.g., hydrocarbons, organic

sulfur compounds, special nuclear materials, compressed gases and radioactive standards) intended

for the United States, Mexico, and Canada are normally shipped prepaid air parcel post

(providing that the parcel does not exceed the weight limits as prescribed by Postal Laws and

Regulations) unless the purchaser requests a different mode of shipment, in which case the

shipment will be sent collect. It is impractical for the Bureau to prepay shipping charges and add

this cost to the billing invoice. Hydrocarbons, organic sulfur compounds, compressed gases,

rubber compounding materials, radioactive standards and similar materials are shipped express

collect. No discounts are given on NBS Standard Reference Materials.

20
FOREIGN SHIPMENTS

A. Small weight shipments over $100 in value and prepaid will be shipped by prepaid air

parcel post. Shipments exceeding the parcel post weight limit must be handled through an agent

(shipping or brokerage firm) located in the U.S. as designated by the purchaser. Parcels will be

packed for overseas shipment and forwarded via express collect to the U.S. firm designated as agent.

B. Non-prepaid orders will be shipped by prepaid International Parcel Post, subject to

size, weight, and category of material limitations. Any other mode of shipment requested by

customer must be paid for by the customer. (Shipments excluded from International Parcel Post

for any reason, must be handled through an agent [shipping or brokerage firm] located in the

U.S. as designated by the purchaser. These parcels will be packed for overseas shipment and

forwarded via express collect to the U.S. firm designated as agent.)

21