TECHNICAL ASSOCIATION OF THE

POLP AND PAPER INDUSTRY

i

4

COLLABORATIVE REFERENCE PROGRAM

FOR PAPER

REPORT NO. 586

U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards
NBS COLLABORATIVE REFERENCE PROGRAMS

TAPPI Paper and Board (6 times per year)

Bursting strength

Tearing strength

Tensile breaking strength

Elongation to break

Tensile energy absorption

Folding endurance

Stiffness

Air resistance

Grammage

Smoothness

Surface pick strength

K & N ink absorption

pH

Opacity

Blue reflectance (brightness)

Specular gloss, 75°

Thickness

Concora (flat crush)

Ring crush

FKBG-API Containerboard (48 times per year)

Mullen burst of linerboard

Concora test of medium

MCCA Color and Appearance (4 times per year)

Gloss at 60°

Color and color difference

CTS Rubber (4 times per year)

Tensile strength, ultimate elongation and tensile stress

Hardness

Mooney viscosity

Vulcanization properties

CTS Thermal Insulation Materials (2 times per year)

19 test methods for thermal insulation materials covering:

thermal properties; strength properties; dimensions, stability,

and density properties; fire properties; and properties of

vapor barriers

ASTM Cement (2 times per year)

Chemical (11 chemical components)

Physical (8 characteristics)

AASHTO Bituminous

Asphalt cement (2 times per year)

Cutbacks (once a year)

NBS Collaborative Reference Programs

A05 Technology Building

National Bureau of Standards

Washington, DC 20234

Rev. 3/79
FEB 2 7 1980

CioL-PsCC - Ct-'ft

TECHNICAL ASSOCIATION OF THE

PULP AND PAPER INDUSTRY

COLLABORATIVE REFERENCE PROGRAM

FOR PAPER

Report No. 58G

R. G. Powell

TAPPI-NBS Research Associate

Collaborative Testing Services, Inc.

J. Horlick

Office of Testing Laboratory Evaluation Technology

Office of Engineering Standards

National Engineering Laboratory

. NBSIR 79-1374 U. S. DEPARTMENT OF COMMERCE

National Bureau of Standards

INTRODUCTION

Reports 58S and 58G comprise the fourth set of reports

for the 78-79 progx'am y ar. Participants in tests

which involve strength properties of paper will receive

only the S report; those in tests which measure other

properties will receive only the G report*

Notes and comments to individual laboratories and "Best

Values" applicable to a particular method are given

following Table 1 for each method* See page 4 of this

report for an explanation of "Best Values"* Please do

not confuse these Best Values with provisional values

included with the samples to detect serious discrepancies

at the time of test* NBS results, identified as L502 in

the optical tests, are included on some of the tables*

If there are any questions on the notes, the analyses,

or the reports in general, contact Robert G» Powell or

Jeffrey Horlick on 301/921-2946*

Jeffrey Horlick, Administrator

NBS-TAPPI Collaborative Reference Program

Office of Testing Laboratory Evaluation Technology

June 8, 1979
TAPPI-NBS COLLABORATIVE REFERENCE PROGRAM

BACKGROUND AND PURPOSE

In 1969, the National Bureau of Standards and the Technical Association of the Pulp and

Paper Industry established a collaborative reference program to provide a participating

laboratory with a means to check periodically the level and uniformity of its testing in

comparison with that of other laboratories.

The interchange of paper and board products and of the raw materials for these products

requires agreement among raw material suppliers, paper and board producers, converters,

distributors, retailers, commercial testing laboratories, user organizations and the

ultimate consumer as to the meaning of test results, an agreement that cannot be achieved

without accurate and precise testing. This program is designed to help assure agreement.

HOW THE PROGRAM WORKS

Participants Select the Tests in which they wish to participate. This choice is made on joining the program, but additional tests may be added at any time. Also new participants

may enter the program at any time.

Test Samples are Distributed Bimonthly; i.e. every 2 months.

Provisional Values are Provided with the Samples for one or both of the test levels, depend

ing on method. The provisional values permit serious discrepancies to be detected without

delay. (It is left to the discretion of the laboratory supervisor as to whether these

values should be known to the operator.)

Each Participant Tests the Samples , following instructions provided for each test method.

The full check on a single instrument should normally take no more than 30 minutes. The

test results are then sent to NBS for analysis. The participant is also asked to report

other information relevant to an accurate analysis, such as test conditions and the instruments used.

Industry Means, Best Values and Other Statistics are developed from the data by NBS. The

best values are estimates based on a careful examination of all data, both current and past

with special attention to results obtained by the National Bureau of Standards and other

recognized reference laboratories in this and other countries.

A Quick Report is Prepared for each participating laboratory reporting data on time. This

report shows the industry mean values, and the deviations of the laboratory's results from

these values for each test method.

A Longer Summary Report, Showing the Data from all Participants, is also prepared. In

the summary report, of which this report is an example, each laboratory is identified by

a code number so that the information is maintained on a confidential basis. However,

instruments are identified by type so participants can compare their results with

those obtained on similar instruments of different manufacture. This report includes

test averages, best values and standard deviations for individual participants and for

the group as a whole. A participant should be able to readily determine the level and

variability of his results in comparison with those of the other laboratories.

Repeatability and Reproducibility Statements such as Contained in ASTM, TAPP I and ISO

Standards are included at the end of the report. Participants can check their perfor- mance level against the precision statement given in the test method or specification.

ii
TABLE 6F CONTENTS

Analyses Tn This Report

PAGE

i ii

i v

158

i 1 13

14

19

20

21

22

23

24

29

30

32

35

37

39

42

47

49

Introduct ion

Description of Program

Metric Conversion Table

Key to Tables and Graphs

40-1 Air Resistance, Gurley Oil type

40-2 Air Resistance, Sheffield type

4 1 — 1 Air Resistance, Gurley Mercury type

44-

1 Smoothness, Parker Printsurf

45-

1 Smoothness, Sheffield type

45-2 Smoothness, Be kk type

47-1 Smoothness, Bendtsen type

56-

1 KAN Ink Absorption

57-

1 pH, Cold Extraction

57-2 pH, Hot Extraction

fcO-1 Opacity, White (69%) Backing

60-2 Opacity, Paper Backing, B A L type

60-3 Opacity, Paper Backing, Elrepho type

65-1 Blue Reflectance (Brightness), Directional

65-2 Blue Reflectance, Diffuse, Elrepho (Gloss Trap)

65-3 Blue Reflectance, Diffuse, Elrepho (No Gloss Trap)

75-1 Specular Gloss, 75 degree

90-1 Thickness (Caliper)

95-1 Grammage (Basis Weight)

Summary

Analyses In The S Report

10-1

10-2

1 1-1

15-1

17- 1 19- 1 20 - 1 20-2

*25-1

26-1

28- l

29-

1

30-

1 30-2

35-

1

36-

1

49-

1

50-

1 91-1

96-1

Bursting Strength - Bursting Strength - Bursting Strength - Tearing Strength - Tearing Strength - Tensile Breaking St

Tensile Breaking St

Tensile Breaking St

Tensile Energy Abso

Tensile Energy Abso

Elongation to Break

Elongation to Break

Folding Endurance,

Folding Endurance,

Stiffness, Gurley

Stiffness, Taber

Surface Pick Streng

Surface Pick Streng

Concora (Flat Crush

Ring Crush

Up to 45 psi

Up to 45 psi, Air Clamps

Up to 100 psi

Deep Cutout

No Cutout

rength - Packaging Papers

rength - Printing Papers,

rength - Printing Papers,

rption - Packaging Papers

rptlon - Printing Papers

- Packaging Papers

- Printing Papers

MIT type

MIT type, log (base 10)

th, IGT

th. Wax

)

CRE

Pendulum

i i 1
TABLE OF CONVERSION FACTORS TO METRIC (SI) UNITS

Physical

Quantity

To Convert

From To

Multiply

by

Bursting strength psi kPa 6.895

kg/ cm

2 kPa 98.07

bar kPa 100.00

Tearing strength g mN 9.807

Tensile strength lb/in. kN/m .1751

lb/0.5 in. kN/m .3502

lb/15 mm kN/m .2965

kg/15 mm kN/m .6538

kg/25 mm kN/m .3923

kg/mm kN/m 9.807

Tensile energy absorption ft-lb/ft 2 J/m2 14.59

in. -lb/in. 2 J/m2 175.1

kg-m/m

2

J/m2 9.807

Bending stiffness g* cm yN*m 98.07

Flat-crush strength (Concora) lb N 4.448

Ring-crush (TAPPI) lb N 4.448

(ISO) lb/6.00 in. kN/m 0.0292

Thickness rail ym 25.40

iv
KEY TO TABLES AND GRAPHS

MEAN - The average of individual TEST DETERMINATIONS.

The number of TEST DETERMINATIONS in the mean

is given in the upper right corner of the

first table (TEST D.) and again at the bottom

of this table.

GRAND MEAN -

(GR. MEAN)

The average of the individual laboratory MEANS,

excluding laboratories flagged (see column F)

with an X, //, or +. The GRAND MEAN is given

in US customary units and, where applicable, in

SI metric units.

SD OF MEANS - (SD MEANS)

The standard deviation of the laboratory MEANS

about the GRAND MEAN; an index of the amonglaboratory precision.

DEV - The deviation or difference of the laboratory

MEAN from the GRAND MEAN.

N. DEV - The normal deviate or ratio of the DEV to the

SD OF MEANS; an indication of the degree of

divergence of the laboratory MEAN from the

GRAND MEAN. A N. DEV of more than 2 or less

than -2 may indicate that the participant is

not following the procedure considered standard

for this analysis.

SDR - The standard deviation of repeated measurements;

that is, of individual test determinations about

their MEAN.

AVERAGE SDR - The average of the individual laboratory SDR's;

an index of the within- laboratory precision of

repeated measurements.

R. SDR - The relative standard deviation of repeated

measurements; that is, the ratio of the SDR to

the AVERAGE SDR; an indication of the ability

of a participant to repeat his measurements

relative to the average ability. The greater

the number of TEST DETERMINATIONS the closer

the R. SDR should be to unity. If R. SDR is

outside the limits given below, the participant

may not be following the procedure considered

standard for this analysis:

1
No. of test

Determinations

Lower limit

for R. SDR

Upper limit

for R. SDR

3

5

8

10

15

20

25

0.09 2.58

0.27 2.06

0.40 1.77

0.46 1.67

0.56 1.53

0.61 1.45

0.65 1.39

VAR - Code for instrument type or variation in condition, see second table.

F - Flag, with following meaning:

+ - Excluded from grand means because VAR non- standard for this analysis.

# - Excluded because data were not understood or because of a non-coded variation reported by

the laboratory. (See NOTES following Table 1

for each method)

.

M - Excluded because data for one sample are missing

.

X - Excluded because plotted point would fall outside of the 99% error ellipse, (see below for

explanation of Graph)

.

* - Included in grand means but plotted point falls

outside of the 95% error ellipse. The participants should take this as a warning to reexamine

his testing procedure.

S - Included in grand mean but only after omission

of one or more 'wild' values; that is, test

determinations more than 3 times AVERAGE SDR

from the laboratory's MEAN. Not more than 20%

of the test determination may be excluded in

this manner without rejecting the laboratory.

0 - Included in grand mean and inside 95% error

ellipse.

COORDINATES - Distances along major and minor axes of error

ellipse. If special additive or concurrent

model of the measuring process applies to this

method, the distance along the minor axis

represents the random error within a laboratory

while that along the major axis also includes

a systematic laboratory component of error.

2
95% ELLIPSE - Lengths of the major and minor axes of the

ellipse and the angle that the major axis

makes with the horizontal axis.

AVG R. SDR - Average of the R. SDR for the two samples;

an indication of the laboratory's precision

of repeated measurements.

Graph - For each laboratory the MEAN for the second

sample is plotted against the MEAN for the

first sample, with each point representing

a laboratory. The horizontal and vertical

lines are the GRAND MEANS. The dashed line

is drawn at 45°. The solid sloping line,

which may or may not lie close to the 45

line, is along the major axis of the error ellipse. The ellipse is drawn so that, on

the average, it will include 95% of the points

representing the laboratories.

Plotted symbols are as explained above (under

F) , except that an 'S' is plotted as an 0 . A participant whose plotted point falls outside of the ellipse should carefully reexamine

the testing procedure he is following.

The graph is plotted with an ellipse when there

are 20 or more laboratories in the analysis.

When there are 10 through 19 laboratories in

the analysis the graph is plotted but the ellipse

is omitted. When there are fewer than 10 laboratories retained in the analysis the graph is not

plotted.

The International System of Units (SI) is used on

the plots wherever possible to aid participants

in familiarizing themselves with SI. Grand means

in SI units are given at the top of the plot, and

supplementary scales in SI units are drawn along

the axes allowing the reader to compare means and

variability in common units and SI units for the same data.

3
Summary - (At end of

report)

In addition to several quantities already defined

above, the summary shows the following values for

each test method:

REPL CRP - The number of replicate test determinations used

in this Collaborative Reference Program.

REPL TAPPI - The number of replicate test determinations in a test result required by the applicable TAPPI

Standard or assumed here if there is no TAPPI

Standard. This quantity is needed in the computation of TAPPI repeatability and reproducibility

from the SD OF MEANS and the AVER SDR. See TAPPI

Standard T1206 for definitions and computations.

REPEAT - TAPPI repeatability, a measure of the withinlaboratory precision of a test result.

REPROD - TAPPI reproducibility, a measure of the betweenlaboratory precision of a test result.

Best values - Given at the end of Table 1 for each method

for which sufficient information is available.

These best values are estimates based on a careful examination of all data, both current

and past, with special attention to results

obtained by the National Bureau of Standards

and other recognized reference laboratories

in this and other countries. All participants

using equipment that is standard for the

analysis should be able to achieve results

within the plus-minus (+) limits, when these

are shown along with the best values.

4
REPORT Nfl. 58C IAPPI C0LLAB6RATI Vis REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS 140-1 TABLE 1 AIR RESISTANCE, GURLEY UNITS ( SECONDS/1 0 0 CC

)

TAPPI STANDARD T460 6S-75, AIR RESISTANCE 0F PAPER

SAMPLE PRINTING SAMPLE PRINTING TEST D. ’- 10 LAB K21 103 GRAMS PEE SCUARE METER £43 60 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDR MEAN DEV N . DEV SDR R. SDR VAR F LAB

Li 00 56.6 5.4 1.78 7.3 1.70 17.0 .6 .73 1.3 1.11 40D O LI 00

Li 06 40.5 -10.7 -3.56 1.2 .23 12.6 -3.8 -4.52 .7 .59 4 CD X LI 06

Li 07 52.6 1.3 .44 5.8 1.35 17. 1 .7 .89 .6 .49 4GD 0 L 1 07

Li 21 50.9 — o 4 -. 12 4.2 .57 15.7 -.7 -. 80 . 7 .58 4 0D o LI 21

LI 22 50.0 -1.2 -.40 3.2 .74 16.0 -.4 -.43 1.7 1.45 40D 0 LI 22

Li 23 52. 1 . e .27 4. 1 .97 15.7 -.7 -.80 1.4 1.22 4 0D 0 LI 23

LI 24G 48.8 -2.4 -.81 2.9 .67 16.0 -.4 -.44 .8 .66 40D 0 L124G

Li 25 50.0 -1.3 -.42 3. 3 .77 16.6 • 2 .27 1.3 1.07 40D 0 L 1 25

Li 28 47.6 -3.6 -1.21 4.4 1.03 16.4 • 0 . 03 1.5 1.27 4 OD 0 L 1 26

LI 4 1 52.0 .8 .25 3.7 .87 17.1 • 8 .90 1.0 . 83 40D e LI 41

L 1 4 8 53.6 2.4 .78 4.3 1.0 1 16.6 • 2 . 24 1.4 1. 19 4 OD 0 L 1 4 6 Li 53 48.4 -2.8 -.94 5.9 1.38 16.9 . 6 .62 1.4 1.17 40 D 0 L 1 53

L 1 5 8 46.9 -4.3 -1.44 4.9 1.14 15.8 -.5 -.69 1.3 1.11 4 OD 0 L 1 5 8 Li 59 50.9 -.3 -.10 1.7 • 39 15.9 -.5 -.62 .8 .71 4 OD 0 L 1 59

LI 63 52.3 1.0 .34 5. 8 1.36 16.6 .2 .29 . 8 .69 40D 0 L 1 63

L 166 51.6 .3 . 1 1 4. 1 • 96 16.5 .2 . 18 1.3 1.07 40D 0 LI 66

Li 74 51.4 .2 • CS 4.8 U 12 16.6 .2 .22 1.2 1.02 4 OD 0 L 1 74

Li 82G 50.9 -.3 -.11 7. 1 1. 66 16.4 -.0 -. 02 1.6 1.38 4 0 D 0 LI 82G

Li 83 56.7 5. 5 1.81 4.9 1. 14 17.3 1.0 1.15 1. 2 1 . 04 4 OD 0 LI 83

LI 9 0C 52.7 1.5 .49 5.6 1 .32 16.4 .0 .01 1.7 1.43 4 0 D 0 LI 90C L190R 54.4 3.2 1.C5 6.7 1.57 16. 1 -.3 -.31 1.2 1.05 4 0 D 0 L 1 90 R L212 47.4 -3. 8 -1.27 5.8 1.36 14.5 -1.9 -2. 23 . 8 .66 4 0 D 0 L2 12 L219 47.4 -3. 8 -1.26 2.9 .68 15.9 -.5 -.60 1.0 . 85 40D 0 L219 L223 53.6 2.4 .78 4. 1 • 96 17.6 1.2 1.43 1.3 1.10 40D 0 L223

L230G 59.7 e.s 2.81 5.5 1.28 18.3 1.9 2.30 1.3 1. 06 4 OD *• L230G

L232 43.0 -8.3 -2.75 7.8 1. 83 14.6 -i.e -2. 13 1. 1 .93 4 OD « L232 L236 52.7 1.5 .48 5.4 1.26 17.0 .6 .76 1.0 . 83 40D 0 L236

L23 8A 5 1.7 • 5 .15 2.5 . 58 17.0 .6 .76 1.0 . 86 40D 0 L238A

L24 1 47. 8 -3.4 -1.14 3. 8 .68 15.7 -.7 -.81 .9 . 80 40D 0 L241 L242 50.0 -1.2 -.41 1. 5 .35 15.3 -1. 1 -1.32 1.2 1.05 4 OD 0 L242 L243G 49.6 -1.6 -.54 4.8 1. 13 15.7 -.7 -. 85 . 8 .70 4 0i> 0 L243G

L254 52.2 1.0 .32 3. 8 .99 17.2 .8 .98 . 9 .78 40D o L254 L259 47.9 -3.3 -1.11 3. 1 .73 14.8 -1.5 - 1. 83 1. 1 .92 4 OD 0 L2 59 L2o 1 51.8 .6 . 19 5.6 1.30 16. 1 -.3 -.31 1.4 1.19 4 OD 0 L261 L262G 50.4 -.8 -.27 1.8 .43 16.6 .2 .22 1. 2 1.05 4 OD 0 L262G

L26 5 48.5 -2.8 -.91 4.7 1.11 15.9 -.5 -.62 1. 1 .92 40D 0 L265 L278 51.0 -.3 -.09 3. 8 . 88 16.2 -.2 -.19 1.4 1.16 40D 0 L278

L2 8 5 52. 4 1.2 .40 5.4 1.26 16.7 .3 .36 1.2 1.02 4 OD 0 L285

L3 0 1 50. 1 -1.2 -.38 4.3 1.00 16.3 -.0 -. 06 1.3 1 - 08 4 OD 0 L301 L30 8 50.9 -.3 -. 1 1 3.7 • 86 16.6 .2 .29 1.3 1.14 4 OD 0 L306

L320 46. 8 -4.4 -1.47 2.7 .63 15.6 -.8 -.93 1.8 1.55 4 OD 0 L320

L3 2 1 46.0 -5.2 -1.74 3.6 .85 12.8 -3.6 -4.28 .6 . 53 4 CD X L3 2 1 L324 50.4 -.9 -.28 4.2 • 98 16.4 . 1 . 06 1.0 .81 4 OD 0 L324

L326 54.3 3. 1 1.03 7. 1 1.65 18. 4 2.0 2.40 1.0 . 88 40D * L326

L328 50.8 -.4 -.14 4. 8 1.12 16.7 .3 . 35 1.4 1.20 4 OD 0 L328

L33 9 40.4 -1 0. 8 -3.60 5.0 1.18 12. 1 -4.3 -5.10 1.0 . 86 40D X L339

L344 47.4 -3.8 -1.27 4 . a 1.12 1 5.6 -.8 -.96 .9 .76 4 OD 0 L344

L376 53. 6 2.4 .78 5. 0 1.17 17.0 .6 .70 1.4 1.17 40D 0 L376

L380 50.6 -.6 -.21 2. 1 .48 15.6 -.6 -.93 1.3 1.07 4 OD 0 L3 80 L388 59.5 8.2 2.73 5.0 1.16 17.2 .9 1. 03 1.6 1.39 4 OD « L388

L394 54. 4 3.2 1.05 5. 1 1.19 1 7.6 1.2 1.43 1.3 1.13 4 OD 0 L394

L396M 48.5 -2.7 -.69 5.5 1 .29 46.5 30. 1 35.99 2.3 1.94 4 OD * L396M

L56 7 53. 1 1.9 .62 3.6 . es 16.7 .3 .37 1.6 1.37 4 OD 0 L567

L576 51.5 .2 .07 4.0 • 94 15. 1 -1.3 -1.52 1.

1

.92 40D 0 L576

L585 53.7 2.5 .82 5.3 1.23 17.2 .8 .96 1.4 1.13 40 D 0 L585 L597 50.5 -.7 -.24 3. 1 • 72 16 .3 -. 1 -.09 1. 8 1.55 4 OD 0 L597

L6 04 51.3 . 1 .02 5. 1 1. 19 16. 1 -.3 -.33 .6 .48 40D 0 L6 04 L616 52.3 1. 1 .37 3.3 .77 17.7 1.3 1.54 . 3 .24 4 OD 0 L6 16 L651 49. 4 -1.8 -.61 3. 8 . 88 15.0 -1.4 -1.65 1. 1 .89 4 OD 0 L6 51

GR. MEAN » 51.2 GURLEY UNITS GRAND MEAN - 16.4 GURLEY UNITS TEST DETERMINATIONS • 10 SD MEANS • 3. 0 GURLEY 1UNITS SD OF MEANS - .8 GURLEY UNITS 55 LABS IN GRAND MEAN AVERAGE SDR - 4.3 GURLEY UNITS AVERAGE SDR - 1.2 GURLEY UNITS

L291 50.9 -.3 1 l 5.0 1.16 17.6 1.2 1.46 1.1 .91 40U L291 TOTAL NUMBER OF LAE6RAT0RIES REPORTING • 60

Best values: K21 51.0 + 4 ,i Gurley units K43 16.3 + 1 .2 Gurley units 5

The following laboratories were omitted from the grand means because of extreme test results: 396M.
REPORT MO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T40-1 TABLE 2 AIR RESISTANCE, GURLEY UNITS (SECONDS/lOO CC

)

TAPP I STANDARD T460 OS-75, AIR RESISTANCE OF PAPER

LAB CODE F MEANS

K21 K43 COORDINATES

MAJOR MINOR

AVG

R. SDK VAR PROPERTY TEST INSTRUMENT CONDITIONS

L339 X 40*4 12. 1 -11.5 -1.9 1 .02 40 D AIR RESISTANCE, GURLEY DENS0METER • en FLOTATION

LI 06 X 40.5 12.6 -1 1.3 -1.5 .43 40D AIR RESISTANCE, GURLEY DENSOMETER - ttlL FLOTATION

L23 2 * 43.0 14.6 -8. 5 -.0 1.38 40 D AIR RESISTANCE, GURLEY DENS0METER - eiL FLOTATION

L321 X 46.0 12.8 '5.9 -2.4 .69 40 D AIR RESISTANCE, GURLEY DENSOMETER - eiL FLOTATION

L320 e 46.8 15.6 -4.5 .2 1.09 40 D AIR RESISTANCE, GURLEY DENSOMETER - oil FLOTATION

LI 5

8

o 46.9 15.8 -4.4 .3 1. 12 40D AIR RESISTANCE, GURLEY DENSOMETER • oil FLOTATION

L344 e 47.4 15. 6 -3.9 -.0 .94 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L212 0 47.4 14.5 -4. 1 -1.0 1.01 40 D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L219 0 47.4 15.9 -3.8 .3 .76 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L 1 2 6 0 47.6 16. 4 -3.6 .8 1.15 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L241 0 47.8 15.7 -3.5 .0 .84 40 D AIR RESISTANCE, GURLEY DENSOMETER • OIL FLOTATION

L259 e 47.9 14. 8 -3.6 -.8 .82 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

LI 53 o 48. 4 16.9 -2.7 1. 1 1.27 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L26 5 0 48.5 15.9 -2.8 . 1 1.01 40 D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L396M * 48.5 46.5 3.6 30.0 1.62 40 D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L124G O 48. 8 16.0 -2.5 . 1 .66 40 D AIR RESISTANCE, GURLEY DENSOMETER . OIL FLOTATION

L651 o 49. 4 15.0 -2. 1 -1.0 .89 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L243G 0 49.6 15.7 -1.7 -.4 .91 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

LI 25 0 50. 0 16.6 -1.2 .5 .92 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L242 0 50.0 15.3 -1.4 -.8 .70 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L 1 22 0 5C.0 16.0 -1.3 -. 1 1.09 40 D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L30 1 fl 50. 1 16.3 -l. 1 .2 1.04 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L324 a 50.4 16.4 -.8 .2 .90 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L26 2G 0 50.4 16.6 -.8 .3 .74 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L59 7 0 50.5 16.3 -.7 . 1 1.13 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L380 a 50.6 1 5.6 -.8 -.6 .78 40D AIR RESISTANCE, GURLEY DENSOMETER . OIL FLOTATION

L32 8 a 50. 8 16.7 -.4 .4 1.16 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

LI 2

1

0 50.9 15.7 -.5 -.6 .77 40 D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L291 50.9 17.6 -. 1 1.3 1.04 40U AIR RESISTANCE, SHEFFIELD IN GURLEY UNITS

L30 8 0 50.9 16.6 -.3 .3 1.00 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

LI 82G a 5C.9 16. 4 -.3 . 1 1.52 40D AIR RESISTANCE, GURLEY DENSOMETER . OIL FLOTATION

LI 59 0 50.9 15.9 -.4 -.4 .55 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

L2 7 8 a 51.0 16.2 -.3 -. 1 1.02 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L6 04 a 51.3 16. 1 .0 -.3 .84 400 AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L 1 74 e 51.4 16.6 .2 . 1 1.07 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L576 e 5 1.5 15. 1 -.0 -1.3 .93 4 0 D AIR RESISTANCE, GURLEY DENSOMETER • OIL FLOTATION

L 1 66 a 51.6 16.5 .3 . 1 1.02 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

L238A e 51.7 17.0 .6 .5 .72 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L26I a 51.6 16. 1 .5 -.4 1.24 40 D AIR RESISTANCE, GURLEY DENSOMETER - eiL FLOTATION

L 1 4 1 a 52.0 17. 1 .9 .6 .85 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

L 1 23 a 52. 1 15.7 .7 -.8 1.09 40 D AIR RESISTANCE. GURLEY DENSOMETER • OIL FLOTATION

L254 a 52. 2 17.2 1.1 .6 .83 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

L 1 63 © 52.3 16.6 1.1 .0 1.02 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L6I 6 o 52. 3 17.7 1.4 1.0 .50 4 OD AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L285 a 52.4 16.7 1.2 .0 1.14 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

I 107 a 52.6 17. 1 1.4 .5 .92 40 D AIR RESISTANCE, GURLEY DENSOMETER . OIL FLOTATION

L236 0 52.7 17.0 1.6 .3 1.05 40 O AIR RESISTANCE, GURLEY DENSOMETER - ©IL FLOTATION

L190C 0 52.7 16.4 1.4 -.3 1.37 40 D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L56 7 a 53. 1 16.7 1.9 -. 1 1.1 1 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L376 © 53.6 17.0 2.4 • 1 1.17 40 D AIR RESISTANCE. GURLEY DENSOMETER - ©IL FLOTATION

L 1 4 8 a 53.6 16.6 2.4 -.3 1.10 40 D AIR RESISTANCE, GURLEY DENSOMETER . OIL FLOTATION

L223 a 53.6 17.6 2.6 .7 1.03 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L58 5 a 53. 7 17.2 2.6 .3 1.20 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

L326 * 54.3 16.4 3.4 1.3 1.27 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L394 a 54. 4 17.6 3.3 .5 1.16 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

LI 9 OR a 54. 4 16. 1 3. 1 -.9 1.31 40 D AIR RESISTANCE, GURLEY DENSOMETER • OIL FLOTATION

LlOO 0 56.6 17.0 5.4 -.5 1.40 40D AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

LI 83 0 56. 7 17.3 5.5 -.2 1.09 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION- L38 8 • 59. 5 17.2 8.2 -.9 1.27 40D AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

L230G * 59.7 1 8.3 8.7 . 1 1.17 400 AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION GMEANS : 51.2

95% ; 16.4 ELLIPSE: 7.8 1.4 1.00 WITH GAMMA - 11 DEGREES

6
URLEY

UNITS

RIR RESISTANCE, GURLEY

SAMPLE K21 = S 1 . 2 GURLEY UNITS SAMPLE K43 = 16.4 GURLEY UNITS

GURLEY UNITS

7
REPORT N©. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T40-2 TABLE 1 AIR RESISTANCE, SHEFFIELD UNITS (CC/MIN) FOR 0.442 SQ. IN <3/4 IN. DIA ) ORIFICE

SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

SAMPLE PRINTING SAMPLE PRINTING TEST D. ' 10 LAB K2 1 103 GRAMS PER SQUARE METER K43 60 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDK MEAN DEV N.DEV SDR R. SDR VAR F LAB

LI 14 79.4 8.3 1.40 4.9 .82 177.7 10. 1 1.10 13.0 1.48 40S © LI 14

LI 21 89.0 17.9 3. 03 5.8 .97 172.9 5. 3 .58 9.8 1.11 40S e L121

LI 24S 70.2 -.9 -•15 6. 6 1.15 166.0 .4 .05 7.4 .84 40S © L124S

L 13 2 69.0 -2. 1 -.35 8.2 1.38 168.4 • 8 . 09 11.8 1.35 4 OS © LI 32

LI 4 8 79.9 e. a 1.49 4.5 .75 174.6 7.0 .77 8.9 1.02 40S 0 LI 48

LI 50 67.2 -3.9 - .66 4.4 .74 194.5 26.9 2.93 23. 9 2.72 40S LI 50

LI 57 67.8 -3.2 -.56 5.8 .97 174.6 7.0 .77 10.9 1. 25 4CS « Lt 57

LI 58 73.0 1.9 • 32 5.9 .99 162.0 — 5.6 -.60 11.4 1.29 4 0S 0 LI 56 L173B 67.5 -3.6 -.61 4.9 .82 177.0 9.4 1. 03 4. 8 .55 40S 0 L173B

L190C 78. 8 7.7 1.30 6.4 1.08 162.6 -5.0 -.54 8. 8 1.00 4 OS © L190C

L213 75.7 <1.6 .78 5.7 .96 165.2 -2*4 -.26 8. 1 .92 40S 0 L213

L223 62. 1 -9.0 -£•52 3.7 .62 163.0 -4.6 -.50 10.2 1.17 40S © L223 L228 66 .

4

-4.7 -.79 6. 4 1.08 165.9 -1.7 -. 18 5.8 .66 40S 0 L228 L230S 69.6 -1.5 -•25 7.0 1. 17 1 59.9 -7.7 -.83 4.0 .46 40S © L230S

L233 55.4 -15.7 —2*66 7.2 1.21 158.0 -9.6 -1.04 8.2 .93 40S * L233

L24 1 79.7 8,6 1.46 5.7 .95 176.4 8. 8 .96 7.6 .87 40S © L241 L249 65.9 -5.2 -.88 6.4 1.08 164.4 -3.2 -.34 10.0 1. 14 40S © L249 L255 92. 1 21.0 3.55 6.2 1. 03 188.7 21.1 2.30 5. 8 .66 40S X L255

L257A 77.6 6. 5 1.10 5.0 .85 157.5 -10. 1 - 1. 09 8.7 1.00 40S © L257A

L257B 68.6 -2.5 -.42 5.6 .94 169.0 1.4 . 16 13.2 1.51 4 0 S © L257B

L257C 78.5 7.4 1.25 8.0 1. 35 161.7 -5.9 -.64 8. 0 .92 4 OS © L257C

L26 0 71.2 . 1 • 02 6.7 1. 12 173.4 5.8 .64 13.9 1.59 4 OS © L260

L26 2S 71.4 .3 • 05 4. 1 .68 157.2 -10.4 -1.13 8.4 .96 40S © L262S

L288 73.3 2.2 • 37 4. 1 .69 187.3 19.7 2. 15 13.6 1.55 40S © L268

L30 1 68.2 -2.9 -.49 8. 3 1.40 168.6 1.0 . 1 1 9.4 1.07 40S © L30 1 L305 70.0 -1. 1 -. 19 5. 8 .97 171.0 3.4 .37 6.5 .74 4 OS © L305

L3 1 8 70.2 -.9 -• 15 6.4 1.07 158.5 -9. 1 -.98 5.6 .64 40S © L318

L352 78.5 7.4 1.25 2.3 .39 168.6 1.0 . 1 1 8.7 .99 40S fl L352

L35 4 73.6 2.5 • 42 6. 8 1. 15 168. 8 1.2 . 14 9.3 1.06 40S © L354

L36 0 69. 1 -2.0 -•34 2.8 .48 157.2 -1 0.4 -1.13 6.5 .74 40 S © L360 L370 67.3 -3. e -.64 5.5 .92 156.3 -11.3 • 1.22 8.2 .93 40S © L370

L372 69.5 -1.6 -.27 9.9 1.66 170.4 2.8 .31 6.5 .74 4 OS © L372

L39 0 66. 5 -4.6 -.78 5. 8 .97 161.0 -6.6 -.71 8.4 .96 40S © L390

L56 2 7 1.5 .4 • 07 6.3 1.06 181.8 14.2 1.55 9. 1 1.03 40S © L562

L57 5 71. 1 .0 • CO 4.4 .74 168.2 .6 .07 12. 3 1.40 40b © L575

L585 7 1.5 .4 .07 8.2 1.38 167.5 -. 1 -.01 1 1. 8 1.35 4 OS © LS85 L597 70.6 -.5 -.08 6.9 1. 16 158.9 -8.7 -.94 6.0 .68 40 S © L597

L6C0 7 1.0 -. 1 -.02 7. 1 1. 20 160.2 -7.4 -. 80 5. 5 .63 40S © L600

L626 64. 4 -6.7 -1.13 8. 8 1.47 146.3 -21.3 -2.31 6.7 .77 40S © L626

L6 8 4 64.5 -6.6 -1.12 3.7 .62 176. 7 9. 1 .99 8.9 1.02 40S © L684

L68 7 69. 1 -2. 0 -.34 5.5 .92 171.1 3.5 .39 O.S .74 40S a L667

GR. MEAN “ 71. 1 SHEFF. UNITS GRAND MEAN - 1 67.6 SBEFF. UNITS TEST DETERMINATIONS * 10 SD MEANS - 5.9 SHEFF. UNITS SD 0F MEANS • 9.2 SHEFF. UNITS 40 LABS IN GRAND MEANS AVERAGE SDR - 5.9 SHEFF. UNITS AVERAGE SDR - 8* 8 SHEFF. UNITS L182B 246.5 175.4 29.67 1 8.3 3.07 762.5 594.9 64.67 35.8 4.09 40B . L 1 82 B L243B 280.2 209. 1 35.37 24.5 4. 12 821.4 653. 8 7 1. 07 52. 2 5.95 4 CB L243B

L3 1 2 80.0 8.9 1.51 3. 8 .63 167.5 -• 1 -.01 6.5 .74 40T L312

L587 74.0 2.9 • 49 5.7 • 95 169.5 1.9 • 21 8.3 .95 40T L5 87 TOTAL NUMBER OF LABORATORIES REPORTING - 45

Best values: K21 71 + 8 Sheffield units K43 167 + 14 Sheffield units

8
REPORT N6. 5 8G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T40-2 TABLE 2 AIR RESISTANCE, SHEFFIELD UNITS (CC/MIN) FOR 0.442 SQ. IN (3/4 IN. DIA) ORIFICE

SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG

CODE F K2i K4 3 MAJOR MINOR R.SDR VAR PROPERTY TEST INSTRUMENT -CONDITIONS

L233 * 55. 4 158.0 -12.6 13.3 1.07 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L223 6 62. 1 163.0 -6.3 7.8 • 69 40S AIR RESISTANCE. SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L626 6 64.4 146. 3 -22.2 2. 1 lo 12 40S AIR RESISTANCE. SHEFFIELD < 3/4 INCH DIAMETER ORIFICE)

L684 fi 64.5 176.7 7.6 8.4 • 62 40S AIR RESISTANCE. SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L249 6 65.9 164.4 -4.2 4.4 1. 1 1 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L22 8 6 66.

4

165.9 -2.6 4.2 • 67 40S AIR RESISTANCE, SHEFFIELD < 3/4 INCH DIAMETER ORIFICE

)

L39 0 6 66. 5 161.0 -7.4 3. 1 .97 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 50 « 67.2 194. 5 25.5 9.5 1.73 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L37 0 a 67.3 156.3 -11.6 1.3 .92 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L173B a 67.5 177.0 8.

5

5. 5 o 68 40S AIR RESISTANCE. SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 57 a 67.0 174.6 6.2 4.7 1.11 40 S AIR RESISTANCE. SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L301 a 68.2 168.6 .4 3.0 1.23 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE > L257B 0 68.6 169.0 .9 2.7 1.23 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 32 a 69. 0 168. 4 .4 2.2 1.37 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIF ICE ) L667 a 69. 1 171.1 3.0 2.7 .03 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L36 0 a 69. 1 157. 2 -1 0.5 -. 2 .6 1 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L372 a 69.5 170.4 2.4 2.2 1.20 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L230S a 69.6 159.9 -7.8 -. 1 .82 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L305 a 7 0.0 171.0 3.1 1.8 .85 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI24S a 70. 2 168.0 .2 1.0 1.00 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L31 8 a 70.2 158.5 -9.0 -1.0 • 86 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L59>7 a 70.6 15 8.9 -6.6 -1.3 .92 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L60 0 a 71.0 160.2 -7.2 -1.5 .91 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L57 5 a 71. 1 168.2 .6 . 1 1.07 4 OS AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L26 0 a 71.2 173. 4 5.7 1 © 1 1.35 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L262S a 7 1.4 157.2 -10. 1 -2.5 o 62 40S AIR RESISTANCE. SHEFFIELD <3/4 INCH DIAMETER ORIFICE)

L585 a 71.5 167.5 .0 -.4 1.36 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L562 a 7 1.5 181.8 14.0 2.6 1 . 04 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 58 a 73.0 162.0 -5.C -3.0 1.14 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L28 8 a 73. 3 1 87.3 19.8 2.0 1.12 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE ) L354 a 73.6 160. 8 1.7 -2.2 1.10 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L587 74.0 169.5 2.5 -2.4 .95 40T AIR RESISTANCE, SHEFFIELD (3 INCH DIAMETER ORIFICE)

L213 a 75.7 165.2 -1.3 -5.0 .94 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L257A a 77.6 157.5 -8.5 -6. 5 o 92 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L352 a 78.5 168.6 2.6 -7.0 .69 40 S AIR RESISTANCE, SHEFFIELD < 3/4 INCH DIAMETER ORIFICE ) L257C a 78.5 161.7 -4.2 -8.5 1. 13 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE ) L190C a 78. 8 162.6 -3.2 -8.6 1.04 40 S AIR RESISTANCE, SHEFFIELD < 3/4 INCH DIAMETER ORIFICE ) Li 1 4 a 79.4 177.7 11.7 -6. 0 1.15 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE ) L241 a 79.7 176.4 10.5 -6.6 • 91 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE ) LI 48 a 79.9 174. 6 8.7 -7. 1 .88 40S AIR RESISTANCE, SHEFFIELD < 3/4 INCH DIAMETER ORIFICE ) L312 80. 0 167. 5 1.8 -8.7 .68 40 T AIR RESISTANCE, SHEFFIELD <3 INCH DIAMETER ORIFICE)

Li 2 I « 89.0 172.9 9.0 -16.4 1.04 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER aSIFICE ) L25 5 X 92. 1 188.7 25. 1 - 16. 1 . 85 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER afiit ice ) Li 82B 246. 5 762.5 618.5 -46.6 3. 58 4 OB AIR RESISTANCE. 3ENDTSEN, VfC 150 L243B 280.2 821.

4

6 83.2 -67. 2 5.04 40B AIR RESISTANCE, BENDTSEN, 150 GMEANS: 71. 1 167.6 1.00 95% ELLIPSE: 24. 1 14.7 *ITH GAMMA • 77 DEGREES

9
RIR RESISTANCE , SHEFFIELD

SAMPLE K21 = 71. SHEFE . UNITS SAMPLE K43 = 168. SHEEP. UNI IS

10
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T41-1 TABLE 1 AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

DIRECT READING, SEC/IO CC, MERCURY DENSITY

SAMPLE release SAMPLE BACKING TEST D. - 10 LAB E68 95 GRAMS PEH SQUARE METER E65 98 GRAMS PER SQUARE METER

CODE MEAN DEV N .DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F I.AB L122 622. -29. -.47 144. 1.69 657. -73. -1. 17 202. 1.37 4 IG O Li 22

LI 2 8 620. -31. -.50 56. .66 780. so. .80 86. .58 4 IG 0 LI 28

L 1 3 4 691. 40. .65 81. .95 716. -14. -.23 177. 1.20 41G e L 1 34 L166M 603. -48. -.77 100. 1. 1 8 781. 51. .81 154. 1.04 4 1

G

0 L166M

L23 0 713. 62. 1.01 57. .67 697. -34. -.54 124. .34 4 1

G

0 L230

L259 625. -26. -.42 66. .77 739. 8. . 13 218. 1.48 41G 0 L259

L312 6 19. -32. -.52 70. • 82 662. -69. -1.10 157. 1.06 41G 0 L312

L35 8 536. -115. 1.86 86. 1.01 629. -102. -1.63 90. .61 4 IG 0 L358

L557 770. 118. 1.92 142. 1.67 754. 23. .37 1 16. .76 4 IG 0 L557

L55 8 697. 46. .74 78. .92 838. 1 07. 1.71 177. 1.20 4 1

G

0 L558

L574 684. 33. .53 51. • 60 722. -9. -. 14 153. 1.03 4 IG 0 L574 L576 632. -19. -.31 91. 1.07 793. 63. 1.00 1 19. .61 4 1

G

0 L576

GR. MEAN » 651. SEC/10 CC GRAND MEAN - 731. SEC/ 10 CC TEST DETERMINATIONS • 10

SD MEANS • 62. SEC/10 CC SD OF MEANS - 63. SEC/ 10 cc 12 LABS IN GRAND MEANS

AVERAGE SDR * 85. SEC/10 CC AVERAGE SDR • 148. SEC/ 10 CC

TOTAL NUMBER OF LABORATORIES REPORTING - 12

Best values: E68 650 seconds per lOcc, E65 730 mercury density

(direct reading) The values reported here are the time in seconds required for the displacement of

10 ml of air through an area of 1.0 sq«

in. of the specimen. The values are not converted to 100ml of air nor to oil density.

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T41-1 TABLE 2 AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

DIRECT READING, SEC/10 CC, MERCURY DENSITY

LAB

C0DE F MEANSE68 E65 C00RDINATES

MAJ0F MIN0B AVGR. SDR VAR PROPERTY TEST I NSTRUMENT-—-C0NDITI 0NS

L358 0 536 • 629. -153. 12. • 81 4 1 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L166M 0 603. 781. 3. 70. 1.11 4 1 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L312 0 619, 662. -72. -25. • 94 4 1 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

Li 2 8 0 620, 780. 14. 57. • 62 4 1 G AIR RESISTANCE, HIGH RANGE, GCRLEY MERCURY FLOTATION

LI 22 0 622, 657. -73. -30. 1« 53 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L259 0 625, 739. -13. 24. 1 • 1 3 4 1 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L576 0 632, 793. 32. 57. • 94 4 IG AIR RESISTANCE, HIGH RANGE. GURLEY MERCURY FLOTATION

L574 0 684, 722. 17. -30. • 82 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATItN

LI 34 0 691. 716. 16. -39. 1*08 4 1 G AIR RESISTANCE. HIGH RANGE. GURLEY MERCURY FLOTATION

L55 8 0 697. 838. 109. 42. 1 • 06 4 1 G AIR RESISTANCE. HIGH RANGE. GURLEY MERCURY FLOTATION

L230 0 713. 697. 19. -68. • 75 4 IG AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L55 7 0 770. 754. 99. -69. 1.22 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

GMEANS 651. 95%

731. ELLIPSE

:

218. 149. 1.00 WITH GAM MA - 45 DEGREES

11
AIR RESISTANCE, GURLEY HG FLOTATION

o

ocno

LO

oo

SAMPLE EB8 = 651. SEC/10 CC

i j i L

LQ + . X . » NOT IN GRAND MEANS

CD

LU ANAl YSIS T41-1

SAMPLE E6S - 731. SEC/10 CC

I L J I

400 450 500 550 600 650 700

SEC/10 CC

750 800 850 900

12
REPORT NO. S8G TAFPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T44-1 TABLE 1 SMOOTHNESS, PARKER PRINTSURF

SAMPLE PRINTING SAMPLE WOVE ENVELOPE PAPER TEST D.- 10

LAj3 K 45 60 GRANS PER SQUARE METER A63 75 GRAMS PER SQUARE METER CODE MEAN DEV N .DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

Li 22 6. 19 .72 i .66 .11 1. 1 1 5.43 .60 1.50 .39 1.61 44P o LI 22

Li 36 5.29 ie -.42 .17 1.71 4.36 -.48 -1.20 .22 .91 44 P e L 1 36

LI 82 5.49 .02 .04 .03 . 32 4. 76 -.07 -.19 .16 .65 44 P 0 LI 82

Li 83 5.04 -.43 1.00 .05 .53 4. 54 -.30 -.75 .16 .65 44P e LI 83 L223 5.46 -.01 03 .10 1. 06 4.90 .06 .15 .34 1.38 44P 6 L223

L26 8 6.00 .52 1.2i .09 .97 5. 45 .61 1.54 .35 1.44 44P o L2 66

L3 1 7 5.57 .10 • 22 .15 1.53 5. 00 . 16 .41 .24 .97 4 4 P 0 L317

L58 8 4. 78 -.69 i . 59 .12 1. 26 4.46 -.38 -.95 .18 .75 44P 0 LS88

L669 5.43 -.04 -.10 .05 .50 4.64 -.20 -.50 .16 .65 44 P 0 L669

GR. MEAN • 5.47 MICRONS GRAND MEAN • 4. 84 MICRONS TEST DETERMINATIONS - 11 SD MEANS - .43 MICRONS SD OF MEANS - .40 MICRONS 9 LABS IN GRAND MEANS

AVERAGE SDR - .10 MICRONS AVERAGE SDR - .24 MICRONS

TOTAL NUMBER OF LABORATORIES REPORTING - 9 Best values: K45 5.5 microns

A83 4.7 microns

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T44-1 TABLE 2 SMOOTHNESS, PARKER PRINTSURF V

LAB MEANS COORDINATES AVG CODE F K45 A83 MAJOR MINOR R. SDR VAR PROPERTY

-TEST INSTRUMENT-—CONDITIONS

L58 8 0 4.78 4.46 -.77 .18 1.01 44P SM00THNESS, PARKER PRINTSURF

L 1 83 0 5.04 4. 54 -.52 .07 .59 44 P SMOOTHNESS, PARKER PRINTSURF

Li 36 0 5.29 4. 36 -.46 -.23 1.31 44P SMOOTHNESS, PARKER PRINISURF

L66 9 0 5.43 4. 64 -. 16 -.12 .57 44 P SMOOTHNESS, PARKER PRINTSURF

L223 0 5.46 4.90 .03 .05 1.22 44P SMOOTHNESS, PARKER PRINTSURF

L l 8 2 0 5.49 4.76 -.04 -.07 .49 44P SMOOTHNESS, PARKER PRINTSURF

L3 1 7 0 5.57 5. CO . 18 .05 i.25 44 P SMOOTHNESS, PARKER PRINTSURF

L26 8 0 6.00 5.45 . 80 .10 i.20 44 P SMOOTHNESS, PARKER PRINTSURF

Li 22 0 6. 19 5. 43 .93 -.04 1.36 44P SMOOTHNESS, PARKER PRINTSURF GMEANS

:

5.47 4. 84 1.00 95% ELLIPSE: 1. 89 .42 WITH GAMMA • 42 DEGREES

13
REPORT

LAB CODE

LIOO

L 1 0 8 LI 14 L121

LI 22

Li 23

LI 24

L 1 25

LI 26

Li 2

8

L i 32

Li 34 L139S

LI 4 8

Li 50

Li 52

LI 53

Li 57

LI 58

L i 59 L162

L166

L i 6 7 L173B

Li 83S L190C

L190R L206

L21 i L2 13

L21 9 L223 L226B

L228 L230S

L23 i L232S

L233

L237

L24 i

L24 9 L254

L255 L257A

L257B

L257C

L259

L26 0

L2t> i L262 L275 L278

L281

L2 85 L28 8 L290

L29 IS L30 1 L305 L308

L312

L31 7 L31 8 L321 L323

NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS 145- i TABLE 1 SMOOIHNESS, SHEFFIELD UNITS SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

SAMPLE

K45 60 GRAMS PRINTING

PER SQUARE METER

SAMPLE

A83

WAVE

75 GRAMSENVELOPE PAPER

PER SQUARE METER

TEST D.' 15 MEAN DEV N. DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

162.5 2.3 .32 5.0 .55 96 • 2 -9.2 -1.36 6.9 .65 45S 0 L100

155.0 -5.3 -.75 6.2 .68 106.7 1.3 . 19 8.7 .81 45S 0 LI 08

164. 1 3. 6 .54 9.9 1.08 98.6 -6. 8 -1.00 11.4 1.06 45S 0 LI 14 156.3 -4.0 -.57 7.4 . 80 106. 1 .7 .10 11.5 1.08 45S 0 LI 21 161.9 1.6 .23 8.4 .92 112. 1 6.7 .98 13.3 1.24 45S 0 LI 22

163.4 3. 1 .45 11.2 1.23 101.9 -3.6 -.52 11.4 1.06 45S 0 LI 23 153.6 -6.7 -.95 11.0 1.20 103. 1 -2.4 -.35 1 l.C 1.03 45S 0 LI 24

167.0 6.7 .96 11.5 1.25 103.0 -2.4 -.36 16.8 1.56 45S 0 L125

164.5 4.3 .61 15.3 1.68 106.2 .8 . 1 1 14. 8 1.38 4SS 0 LI 26 160.5 .2 .03 11.7 1.28 102.9 -2.6 -.38 6.7 .82 4SS 0 Ll 28

169.5 9.3 1.32 13.6 1. 48 101.3 -4.2 -.61 14.3 1.33 45S 0 L132

150.7 -9.6 -1.37 7.5 .82 97.7 -7.8 -1. 14 6.2 .58 4SS 0 Ll 34 163.9 3.6 .51 6.7 .74 1 18.5 13. 1 1.92 9.0 .84 45S 0 L139S

169.0 8.7 1.24 9.5 1.03 1 16.3 10. 8 1.59 13.2 1. 23 4SS 0 L148

170.9 10.6 1.51 18.6 2. 03 105.5 .0 .00 14.9 1.39 45S 0 Ll 50

163.2 2.9 .42 5.4 .59 111.7 6.3 .92 11.3 1.06 45S 0 L152

173.7 13.4 1.91 7.3 .79 1 14.7 9.2 1.35 7.6 .71 45S 0 L153

168.5 8. 2 1.17 11.5 1. 26 1 16.6 11.2 1.64 14.5 1.36 45S 0 Ll 57 158.0 -2.3 -.32 7.3 .79 1 10.7 5.2 .77 10.2 .95 45 S 0 L158

170. 1 9. 8 1.39 11.8 1.28 114.9 9.5 1.39 10.7 1.00 45S 0 Ll 59

156.7 -3.6 -.51 6.2 .67 107.0 1.6 .23 7.0 .65 45S 0 L 1 62

153.9 -6. 3 -.90 8.0 .87 109.3 3.9 .57 9.2 .86 45S 0 L 1 66 162.3 2. 1 .29 4.2 .46 1 12.7 7.2 1. 06 5.0 .46 45S 0 L 1 67

161.7 1.4 .20 7.5 .82 86.7 -16. 8 -2.46 6.9 .65 45S » L173B

162.9 2.7 .38 3. 8 .96 1 11.9 6.4 .94 16.7 1.56 45S 0 L183S

159.4 -.9 -.12 7.4 .81 108.3 2.9 .42 9.2 . 86 45S 0 L190C

157. 1 -3. 1 -.45 9.3 1.01 93. 1 -12.3 -1.81 12.0 1.11 45S 0 L190R

163.6 3.3 .47 6. 3 .68 1 14.4 9.0 1.31 1 1.6 1.08 45S 0 L206

149. 4 -1 0. 9 -1.55 7.4 .81 101.1 -4.4 -.64 10.5 .98 45S 0 L211

146.3 -13.9 -1.99 10.4 1.14 103.2 -2.2 -.33 10.2 .95 45S 0 L213

170.2 9.9 1.41 16.9 1. 85 108.3 2.9 .42 10. 8 1.01 4 5S 0 L2 19 157.7 -2. 6 -.37 6.3 .69 103.9 -1.5 -. 22 14.0 1.31 45S 0 L223

149.9 -10. 3 -1.47 9. 1 1.00 96. 1 -9.3 -1.37 1 1.2 1.05 45S 0 L226B

163.3 3. 1 .44 10.5 1. 1 5 108. 1 2.7 .39 13.4 1. 25 45S 0 L228

162. 1 1.9 .26 8.6 .94 101.5 -3.9 -.57 10.6 .99 45S 0 L230S

167. 1 6. e .97 9.5 1.04 103.8 -1.6 -.24 13.0 1.21 45S 0 L231 160.3 . l .01 5.8 .64 92.7 -12.8 -1.87 8.8 .82 45S 0 L232S

155.2 -5. 1 -.72 11.6 1.26 1 05.6 .2 .02 10.6 .99 45S 0 L233

160.8 .5 .07 5.2 .56 106.0 .6 .08 4.3 .40 45S 0 L237

150. 1 -1 0. 1 -1.44 8.4 .92 98.9 -6.6 -.96 7.7 .71 45S 0 L241

156. 1 -4. 1 -.59 8.3 .90 106. 1 .6 .09 10.3 .96 45S 0 L249

166.7 6. 4 .91 10.3 1. 12 1 06.5 1.1 . 16 8.4 .78 45S 0 L254

161.3 1.0 . 14 4.3 .47 120.6 15.2 2.22 2.6 .24 45S 0 L255

157. 1 -3. 1 -.45 10.2 1. 1 1 102.8 -2.6 -. 39 7. 7 .72 45S 0 L257A

165.3 5. 1 .72 9.9 1.08 103.2 -2.2 -.33 9.7 .90 45S 0 L257B

160.0 -. 3 -.04 7. 1 .78 106.5 1. 1 . 16 7.7 .72 45S 0 L257C

174.2 13. 9 1 .98 14. 8 1.62 1 16.4 1 1.0 1.6 1 10.4 .97 45S 0 L259

160.6 .3 .05 6.2 .67 1 11.4 6. 0 .87 16.2 1.51 45S 0 L260

156.4 -3.9 -.55 7.3 . 80 103.3 -2.2 -.32 8.6 .80 45S 0 L261 157.6 -2.7 -.38 8.3 .91 102.8 -2.6 -.39 8.3 .78 45S 0 L262

156.7 -3. 5 -.50 12.2 1.33 102.9 -2.6 -. 38 13.7 1.28 45S 0 L275

167.0 6.7 .96 8.9 .97 1 13.7 8.2 1.21 13.3 1.24 45S 0 L278

162.7 2.4 .34 10.2 1. 1 1 109.9 4.5 .66 14.5 1.35 4 5S 0 L28I

148.7 -11.6 -1.65 8.3 .91 101.7 -3.e -.55 12.5 1. 16 45S 0 L2 85 169.2 6.9 1.27 7.7 . 84 106.9 1.4 .21 11.2 1.04 45S 0 L286

152.3 -7.9 -1.13 7.3 .80 98.3 -7. 1 -1.04 7.5 .70 45S 0 L290

162.4 2. 1 .30 5. 8 .63 1 03.9 -1.6 -. 23 11.2 1. 04 45S 0 L291S

163.0 2.7 .39 7.4 .81 1 16.3 10. 8 1.59 12.4 1. 15 4 5S 0 L301

165. 2 4.9 .70 8.4 .92 109. 1 3.6 .53 7.4 .69 45S 0 L305

156. 9 -3.4 -.49 7.0 .77 99.5 -6.0 -.88 11.2 1.05 45 S 0 L308

16 1.4 1. 1 . 16 13.4 1.46 1 15.0 9.6 1.40 9.4 . 88 45S 0 L3 12 157.3 -3. 0 -.43 13.4 1. 46 94.1 -11.4 -1.67 7.5 .70 45S 0 L3 i 7 160.9 .6 . 06 11.0 1.20 1 17.5 12. 1 1.77 16. 7 1.55 45S 0 L318

140.8 -19.5 -2.77 5.6 .61 98.7 -6.7 -.98 12. 4 1. 15 45S * L321

164.0 3.7 .53 10.4 1. 13 103.7 -i.e -.26 9.5 .89 45S 0 L323 14
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY &979 ANALYSIS T45-1 TABLE 1 SMOOTHNESS # SHEFFIELD UNITS SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

SAMPLE PRINTING SAMPLE WAVE ENVELOPE PAPER TEST D. a 15 LAB K45 60 GRAMS PEE SQUARE METER A83 75 GRAMS PER SQUARE METER

CODE MEAN DEV N.DEV SDR E. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

L326 159.7 -.6 -.05 5. 1 .56 1 10.8 5.4 .79 9.2 . 86 45S 0 L326

L32 8 168.9 e.6 1.22 12.8 1.40 100.7 -4.8 -.70 10. 1 .95 45S 0 L326

L34 9 150.5 -5.8 -1.40 7.6 .83 1 02.5 -2.9 -.43 8.7 .01 45S e L349

L352 159.7 -.5 -.08 7.5 .82 1 10.7 5.3 .78 12. 1 1. 13 45S 0 L352

L36 0 162. 1 1.5 .26 5.6 .62 102.0 -3.4 -.51 12.8 1.20 45S 0 L360

L370 154.3 -5.5 -.85 4.2 .46 105.4 -.0 -.01 10.5 .98 45S 0 L370

L37 2 159.7 -.6 -.09 6. 1 .67 99.0 -6.4 -.95 5.5 .88 45S 0 L372 L376 178.5 18. 2 2.59 19. 1 2. 09 l 07.7 2.2 .33 4.9 .46 45S « L376

L3 80 156. 1 -4. 1 -.59 10.8 1.18 96.9 -8.5 -1.25 9.2 .85 45S 0 L380

L382 159.9 -.4 -.06 10.2 1. 1 1 1 10.5 5. 1 .75 12.6 1.19 45S 0 L382 L390 155.7 -4.6 -.66 5.0 .99 107.3 1.9 .26 19.5 1.82 45S 0 L390 L396M 154.7 -S.5 -.79 9.9 1. 09 96.3 -9.2 - 1.35 8.0 .74 45S 0 L396M L554 152.3 -8. 0 -1.14 9.7 1. 06 96.0 -9.4 -1.39 12.0 1.12 45S 0 L5 54 L56 7 159. 1 -1. 1 -. 16 6.8 .74 109.7 4.3 .63 7.1 .66 45S 0 L567

L575 169.0 8.7 1.24 11.0 1.20 1 09.9 4.4 .65 10.3 .96 45S 0 L575

L5 85 149.3 -10.5 -1.56 16. 8 1.83 93.3 -12. 1 -1.78 11.0 1.02 45S 0 L585

L587 169.0 8.7 1.24 9. 1 .59 1 04.3 -1. 1 -. 16 5.9 .55 4 5S 0 L587

L59 7 155.2 -5. 1 -.72 8.2 .90 103.4 -2.0 -.30 13.6 1.27 45S 0 L5 97 L600 154.5 -5.7 -.82 12.5 1.36 90. 1 -15.4 -2.26 12.9 1.21 45S 0 L600

L626 155.5 -4.7 -.68 7.7 .84 1 13.6 8.2 1.20 10.9 1.02 45S 0 L6 26

L64 8 154. 7 -S.5 -.79 9.4 1.03 100.2 -5.2 -.77 10.8 1.00 4 5S 0 L648

L65 1 145.9 -14.3 -2.04 7.8 . 86 107.6 2.2 .32 13.0 1.21 45S 0 L6 51 L670 175.6 15.3 2. 18 13.5 1.48 1 12.8 7.4 1. 08 12.7 1.18 4 5S 0 L670

L679 134.5 -25.7 -3.67 7.7 .84 83.0 -22.4 -3.29 7.9 .74 4 SS a L679

168 8 164. 3 4. 1 .58 1 1.3 1.24 103.9 -1.6 -.23 9.6 .91 4 5S 0 L088

GR, MEAN • 160.3 SHEFF. UNITS GRAND MEAN - 105.4 SBEFF. UNITS TEST DETERMINATIONS • 15 SD MEANS • 7.0 SHEFF. UNITS SD 6F MEANS * 6.8 SHEFF. UNITS 89 LABS IN GRAND MEANS

AVERAGE SDR - 9.2 SHEFF. UNITS AVERAGE SDR • 10.7 SBEFF. UNITS

L 1 74 245.5 65.2 12. 13 5.4 • 59 216.3 110.9 16. 27 6.5 .61 45R . L 1 74 TOTAL NUMBER OF LAE ORATORIES REPORTING - 91

Best values: K45 160 + 11 Sheffield units A83 105 + 11 Sheffield units

The following laboratories were omitted from the grand means because of extreme test results: 679.

15
REPORT NO, 58G TAPP I COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T45-1 TABLE 2 SMOOTHNESS, SHEFFIELD UNITS

SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG CODE F K45 A83 WAJ0E MINSK fi. SDK VAR PROPERTY- —TEST INSTRUMENT- --CONDITIONS

L675 0 134,5 83.0 -34. 1 1.2 .79 45 S SMOOTHNESS, SBEFFIELD

L321 * 140, 8 96.7 -18.8 8.4 . 88 45S SMOOTHNESS, SHEFFIELD

L651 0 145, 9 1 07.6 -9.0 1 1.4 1.03 45S SMOOTHNESS, SHEFFIELD

L213 0 146,3 103,2 -11.7 7.9 1.04 45 S SMOOTHNESS, SBEFriELD

L285 0 148,7 101.7 -11.1 S.2 1.04 45S SMOOTHNESS, SHEFFIELD

L585 0 149,3 93.3 -16.3 -1.4 1.43 45S SMOOTHNESS, SHEFFIELD

L21 I e 149,4 101,1 - 10.9 4.2 .90 45S SMOOTHNESS, SBEFFIELD

L226B 0 149, 9 96,1 -13.9 .3 1.02 45S SMOOTHNESS, SHEFFIELD

L24 1 o 150, 1 98.9 -11.9 2. 1 .82 45 S SMOOTHNESS, SBEFFIELD

L34 9 o 150,5 102.5 -9.2 4.6 .82 45S SMOOTHNESS, SBEFFIELD

L 1 34 o 15C.7 97.7 -12.3 .9 .70 45S SMOOTHNESS, SHEFFIELD

L554 Pi 152,3 96.0 -12.3 -1.4 1.09 45 S SMOOTBNESS, SHEFFIELD

L29 0 0 152,3 98.3 -10.7 .2 .75 45 S SMOOTHNESS, SHEFFIELD

LI 24 0 153,6 103. 1 -6.S 2.8 1. 1 1 45S SMOOTHNESS, SHEFFIELD

LI 66 o 153,9 109.3 -2.0 7.2 .87 45S SMOOTHNESS, SHEFFIELD L370 0 154,3 105.4 -4.4 4.0 .72 45S SMOOTHNESS, SBEFFIELD

L60 0 0 15 4,5 90.1 -14.7 -7.3 1.28 45S SMOOTHNESS, SHEFFIELD

L64 8 0 154,7 100.2 -7.6 -.0 1.02 45S SMOOTBNESS, SBEFFIELD

L396M 0 154,7 96 .3 -10.3 -2.9 .91 45 S SMOOTBNESS, SBEFFIELD

LI 0

8

o 155, 0 106.7 -3.0 4. 5 .75 45S SMOOTHNESS, SHEFFIELD

L597 0 155, 2 103.4 -5. 1 2.0 1.08 45S SMOOTHNESS, SHEFFIELD

L233 0 155,2 105.6 -3.6 3.6 1.13 45 S SMOOTHNESS, SBEFFIELD

L626 0 155,5 1 13.6 2. 1 9.2 .93 45 S SMOOTHNESS, SBEFFIELD

L390 0 155,7 107.3 -2. 1 4.5 1.40 45S SMOOTHNESS, SHEFFIELD

L380 0 156, l 96.9 -8.8 -3.4 1.02 45S SMOOTHNESS, SBEFFIELD

L24 9 o 156, 1 1 06 * 1 -2.6 3.3 .93 45 S SMOOTHNESS, SBEFFIELD

LI 2

1

o 156,3 106.1 -2.5 3.2 .94 45S SMOOTHNESS, SHEFFIELD

L26 1 0 156. 4 103.3 -4.3 1. 1 . 80 45S SMOOTHNESS, SHEFFIELD

L162 o 156,7 107.0 -1.6 3.6 .66 45S SMOOTHNESS, SHEFFIELD

L27 5 0 156,7 102.9 -4.3 . 5 1.30 45S SMOOTHNESS, SBEFFIELD

L30 8 e 156, 9 99.5 -6.6 -2.0 .91 45 S SMOOTHNESS, SBEFFIELD

L190R 0 157, l 93. 1 -10.7 -6.8 1.06 45S SMOOTHNESS, SBEFFIELD L257A o 157, 1 102. 8 -4.1 .2 .91 45S SMOOTHNESS, SBEFFIELD

L317 0 157.3 94.1 -10.0 -6.3 1.08 45S SMOOTHNESS, SBEFFIELD

L26 2 0 157, 6 102. 8 -3.8 -. 1 .84 45S SMOOTHNESS, SBEFFIELD L223 o 157.7 103.9 -2.9 .7 1.00 45S SMOOTHNESS, SHEFFIELD

Li 58 o 158. 0 110.7 1.9 5.4 .87 45S SMOOTHNESS, SHEFFIELD

L567 0 159. 1 109.7 2.1 3.9 .70 45 S SMOOTHNESS, SHEFFIELD

Li 9 OC 0 159.4 108.3 1.3 2.7 .83 45S SMOOTHNESS, SHEFFIELD

L372 0 159.7 99.0 -4.8 -4. 3 .78 45S SMOOTHNESS, SHEFFIELD

L326 0 159.7 1 10.8 3.2 4.3 .71 45S SMOOTHNESS, SBEFFIELD

L352 0 159.7 110.7 3.2 4.2 .97 45S SMOOTHNESS, SHEFFIELD

L38 2 0 159. 9 1 10.5 3.2 4.0 1. 15 45 S SMOOTHNESS, SHEFFIELD

L257C 0 160, 0 106.5 .S 1.0 .75 45S SMOOTHNESS, SBEFFIELD

L232S 0 160. 3 92.7 -8.7 -9.4 .73 45S SMOOTHNESS, SHEFFIELD

L128 0 160.5 102.9 -1 .6 1 fu • o 1.C5 45S SMOOTHNESS, SBEFFIELD

L26 0 o 160,6 111.4 4.3 4. 1 1.09 45S SMOOTHNESS, SBEFFIELD

L237 0 160, 8 106.0 .8 .0 . 48 45S SMOOTHNESS, SHEFFIELD

L31 8 0 160.9 1 17.5 8.7 8.4 1.38 45S SMOOTHNESS, SHEFFIELD

L25 5 0 16 1,3 120.6 11.1 10. 4 .35 45S SMOOTHNESS, SHEFFIELD

L31 2 a 161, 4 1 15.0 7.3 6. 2 1.17 45 S SMOOTHNESS, SHEFFIELD

L173B ft 161.7 88.7 -10.4 -13.2 .73 45S SMOOTHNESS, SHEFFIELD

Li 22 0 161,9 112.1 5.7 3.8 1.08 45 S SMOOTHNESS, SHEFFIELD

L230S 0 162, 1 101.5 -1.3 -4. 1 .97 45S SMOOTHNESS, SBEFFIELD

L36 0 0 162, 1 102,0 -1.0 -3.8 .91 45S SMOOTHNESS, SHEFFIELD

L167 0 162.3 112.7 6.4 3.9 .46 45S SMOOTHNESS. SHEFFIELD

L29IS 0 162. 4 1 03.9 .5 -2.6 .84 45S SMOOTHNESS, SHEFFIELD

LlOO 0 162,5 96.2 -4.7 -8.3 .60 45S SMOOTHNESS, SHEFFIELD

L28I 0 162. 7 109.9 4.8 1.6 1.23 45S SMOOTHNESS, SHEFFIELD

Li 83S 0 162.9 111.9 6.3 2.9 1. 26 45S SMOO THNESS

,

SBEFFIELD

L30 1 0 163,0 1 16.3 9.4 6. 0 .98 45S SMOOTHNESS, SBEFFIELD

Li 52 o 163. 2 111.7 6.4 2.6 .82 45S SMOOTHNESS, SHEFFIELD

L22 8 0 163, 3 108. 1 4. 1 -• 1 1.20 45S SMOOTHNESS, SHEFFIELD

Li 23 0 163. 4 10 1.9 -.2 -4 a 7 1.14 45S SMOOTHNESS, SHEFFIELD

L20 6 0 163. 6 114.4 8.5 4.3 . 88 45S SMOOTHNESS, SHEFFIELD

16
REPflRT NO. 58C TAPP I COLLABORATIVE REFERENCE PROCRAM FEBRUARY 1979 ANALYSIS T45-1 TABLE 2 SMOOTHNESS. SHEFFIELD UNITS SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG CODE F K45 A83 MAJOR MINOR R. SDR VAR PROPERTY- —TEST INSTRUMENT—ceNDITIGNS

L139S 0 163.9 116.5 11.6 7. 1 .79 45S SMOOTHNESS, SHEFFIELD

L323 0 164. 0 103.7 l.S -3.8 1.01 45S SMOOTHNESS, SHEFFIELD

Lll 4 o 164. 1 98.6 -1.9 -7.6 1.07 45S SMO0TBNESS, SHEFFIELD

L68 8 e 164. 3 103.9 1.9 -3.9 1.07 45S SMOOTHNESS, SHEFFIELD

LI 26 a 164. 5 106.2 3.6 -2.4 1. 53 45S SMOOTHNESS, SHEFFIELD L305 0 165.2 109.1 6. 1 -.7 .80 45S SM00TBNESS, SHEFFIELD

L257B e 165.3 103.2 2.2 -5. 1 .99 45S SMOOTHNESS, SHEFFIELD L254 o 166.7 106.5 5.4 -3.6 .95 45 S SMOOTHNESS, SHEFFIELD

L 1 25 0 167.0 103.0 3.2 -6.4 1.41 45S SMOOTHNESS, SHEFFIELD

L27 8 0 167.0 1 13.7 10.5 1.4 1.11 45 S SMOOTHNESS

,

SHEFFIELD

L231 0 167. 1 103.8 3.8 • -5. 8 1.12 45S SMOOTHNESS, SHEFFIELD

Li 57 o 168. 5 1 16.6 13.6 2.6 1.31 45S SMOOTHNESS, SHEFFIELD

L32 8 o i6e. 9 100.7 3.0 -9.4 1.17 45 S SMOOTHNESS, SHEFFIELD

LI 4 8 0 169.0 116.3 13.8 1.9 1. 13 45S SMOOTHNESS, SHEFFIELD

L587 0 169. 0 104.3 5.6 -6.8 .77 45S SMOOTHNESS, SHEFFIELD

L57 5 0 169. 0 109.9 9.4 -2.7 1.08 45 S SMOOTHNESS, SHEFFIELD

L288 0 169. 2 106.9 7.5 -5. 1 .94 45 S SMOOTHNESS, SHEFFIELD

L 1 32 0 169.5 101.3 3.9 -9.4 1.41 45S SMOOTHNESS, SHEFFIELD

LI 59 0 170. 1 1 14.9 13.6 .2 1.14 45 S SMOOTHNESS, SHEFFIELD

L219 0 170.2 108.3 9.2 -4.7 1.43 45S SMOOTHNESS, SHEFFIELD

L 1 5 0 0 170.9 105.5 7.8 -7.2 1.71 45S SMOOTHNESS, SHEFFIELD

L 153 O 173.7 114.7 16. 1 -2.4 .75 45S SMOOTHNESS, SHEFFIELD

L259 0 174.2 116. 4 17.7 -1.5 1. 29 45S SMOOTHNESS, SHEFFIELD

L670 0 175.6 1 12.8 16. 2 -5. 1 1.33 45S SMOOTHNESS, SHEFFIELD

L376 * 178.5 107.7 14.8 -10.8 1.27 45S SMOOTHNESS, SHEFFIELD

L i 7 4 245.5 216.3 1 38. 0 22.8 .60 45R SMOOTHNESS, SHEFFIELD. NUN— STANDARD INSTRUMENT

GMEANS: 160. 3 105.4 1.00 95* ELLIPSE: 20.8 13.0 RITH GAMMA - 43 DEGREES

17
HEFF,

UNITS

SM00THNESS , SHEFFIELD

SAMPLE K 45 = 160. SHEFF . UNITS SAMPLE A83 = 105. SHEFF . UNITS

18
REPORT NO* 58G TAPPI COLLABORATI VE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T45-2 TABLE 1 SMOOTBNESS , BEK K SECONDS

TAPPI SUGGESTED METHOD T479 SU-71, SMOOTHNESS OF PAPER (BEKK METHOD*

SAMPLE PRINTING SAMPLE WOVE ENVELOPE PAPER TEST D. 15 LAB K45 60 GRAMS PER SQUARE METER A83 75 GRAMS PER SQUARE METER

CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N.DEV SDK R. SDR VAR F LAB

L139B 31.9 1.8 • 45 2.6 1.00 47.8 -7. 1 -.94 7.3 .79 45K 6 LI39B

L162 24. 1 -6. 1 1.56 2.3 .90 48.2 -6.7 -.88 a. e .95 45K O L 162

LI 82K 26.5 -3.7 -.95 2.3 .90 48.5 -6.4 -.84 8.4 .91 4SK 0 L182K

L190C 33.2 3.0 .77 2.9 1. 10 61.7 6. 8 .89 14.0 1.51 45K © L190C

L23 0B 27.7 -2.4 -.63 3.6 1.38 52.9 -2.0 -.27 6.4 .69 45K 0 L230B

L23 2B 35. 1 4.9 1.26 1.7 .67 67.3 12.4 1.64 8. 1 .88 45K 0 L232B

L243K 30.9 . e • 19 3.0 1.16 50.4 -4.5 -.59 9.8 1.07 45K 0 L243K

L291 K 34.7 4. 5 !• 16 2.9 1.13 64.6 9.7 1.28 9.2 1.00 45K 6 L291K

L5 8 1 27.5 -2.7 -.70 2.0 .77 52.6 -2.3 -.30 1 1.0 1.19 45K 0 L5 8

1

GR* MEAN - 30.2 BEKK SECONDS GRAND MEAN * 54.9 BEKK SECONDS TEST DETERMINATIONS - 15 SD MEANS - 3.9 BEKK SECONDS SD OF MEANS - 7.6 BEKK SECONDS 9 LABS IN GRAND MEANS

AVERAGE SDR - 2.6 BEKK SECONDS AVERAGE SDR • 9.2 BEKK SECONDS L250M 28.3 -1.8 -.47 2.4 .91 40.5 -14.4 -1.89 6.0 .65 4 5L L250M

L251 30.2 .0 .00 2.4 .92 52.4 -2.5 -.33 1 1.2 1.21 45L L251 TOTAL NUMBER OF LABORATORIES REPORTING - 11

Best values: K45 30 Bekk seconds

A83 52 Bekk seconds

REPORT NO. 58G TAPPI COLLABORATI VE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T45-2 TABLE 2 SMOOTHNESS , BEKK SECONDS

TAPPI SUGGESTED METHOD T479 SU-71. SMOOTHNESS OF PAPER (BEKK METHOD 1 LAB MEANS COORDINATES AVG C0DE F K45 A83 MAJOR MINOR R. SDR VAR PROPERTY---TEST I NSTRUMENT-—-CONDITIONS

L162 0 24. 1 48.2 -8.6 2.9 .92 45 K SMOOTHNESS, BEKK L182K a 26. S 48.5 -7.3 .8 .91 45K SMOOTHNESS, BEKK

L58 1 0 27.5 52.6 -3.2 1.6 .98 45 K SMOOTHNESS, BEKK L230B 0 27.7 52.9 -2.8 1.4 1.04 45 K SMOOTHNESS, BEKK

L250M 28.3 40.5 -13.9 -4. 1 .78 45L SMOOTHNESS, BEKK, 20 C, 65% FH L251 • 30.2 52.4 -2.3 -1.0 1.06 45L SMOOTHNESS, BEKK, 20 C, 65% FH L243K 0 30.9 50.4 -3.8 -2.5 1. 1 1 45 K SMOOTHNESS, BEKK L139B 0 31.9 47.8 -5.8 -4.5 .90 45 K SMOOTHNESS, BEKK L190C a 33. 2 61.7 7.4 -.0 1.31 45K SMOOTHNESS, BEKK

L29 IK 0 34.7 64.6 10.7 -.2 1.06 45 K SMOOTHNESS, BEKK

L23 2B o 35. 1 67.3 13.4 .5 .77 45 K SMOOTHNESS, BEKK

GMEANS>: 30.2 54.9 1.00

95% ELLIPSE: 27.1 7.4 WITH GAMMA 66 DEGREES

19
REPORT NO. 58G TAPP I COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T47-1 TABLE 1 SMOOTHNESS, BENDTSEN

SAMPLE PRINTING SAMPLE WOVE ENVELOPE PAPER TEST D. - 10 LAB K4S 60 GEAMS PER SQUARE METER A63 75 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDB R. SDB MEAN DEV N. DEV SDB R. SDR VAR F LAB

L1C 0 193. -10. -.67 13. .70 91. -22. -£.69 12. .65 4 7B 0 LI 00 Lie~B 230. 28. 1.92 27. 1.46 122. 9. .71 26. 1.47 47B O LI 82B

L23 6 200. -2. 16 13. .71 117. 4. .32 12. .66 47B e L236

L242 189. -14. -.94 18. .97 1 10. -3. -.21 9. .53 47B 0 L242 L243B 212. 10. .67 17. .90 1 14. 1. • 07 14. • 77 47B a L243B

L24 4 189. -13. -.91 20. 1. 10 107. -6. -.45 23. 1.32 47B 0 L244 L248 195. -8. -.53 22. 1. 18 136. 23. 1.75 24. 1.34 47B e L248

L333 211. 9. .61 18. .96 106. -6. -.49 22. 1.25 47B 6 L3 33

GR. MEAN • 203. ML/MIN GRAND MEAN - 1 13. ML/MIN TEST DETERMINATIONS - 10 SD MEANS - 14. ML/MIN SD 0F MEANS • 13. ML/MIN 8 LABS IN GRAND MEANS AVERAGE SDR - 19. ML/MIN AVERAGE SDR - 18. ML/MIN

TOTAL NUMBER OF LABORATORIES REPORTING - 8

Best values: K45 .200 tnilliliter per minute

A83 120 milliliter per minute

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T47-1 TABLE 2 SMOOTHNESS, BENDTSEN

LAB CODE F MEANS

K45 A83 COORDINATESMAJOR MINOR

AVG

R. SDR VAR PROPERTY- --TEST I NSTRUMENT-- -CONDITIONS

L242 0 189. 1 10. -13. 5. .75 47 B SMOOTHNESS, BENDTSEN, WG 150 L244 0 189. 107. -14. 3. 1.21 4 7B SMOOTBNESS, BENDTSEN, WG 150 L100 O 193. 91. -20. -13. .68 47 B SMOOTHNESS, BENDTSEN, WG 150 L24 8 0 195. 136. 7. 23. 1.26 4 7B SMOOTBNESS, BENDTSEN, WG 150 L236 0 200. 117. 1. 5. .69 47 B SMOOTHNESS, BENDTSEN, WG 150 L333 0 211. 106. 4. -10. 1.1 1 47 B SMOOTHNESS, BENDTSEN, WG 150 L24 3B 0 212. 1 14. 9. -5. .83 47 B SMOOTHNESS, BENDTSEN, WG 150 L182B o 230. 122. 28. -8. 1.47 47B SMOOTHNESS, BENDTSEN, WG 150 GMEANS

:

203. 95%1 13. ELLIPSE

:

54. 40. 1.00 WITH GAM MA • 34 DEGREES

20
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T56-1 TABLE 1 KAN INK ABSORPTION

SAMPLE COATED GLOSS

LAB E48 91 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDR

LI 26 74.9 50.2 15.40 .6 .66

LI 49 23. 7 -1.0 -.29 .5 .60

LI 82 28.7 4.0 1.23 .6 • 70 L2 13 28. 4 3.7 1.13 1.0 U 14 L29 1 22.3 -2.4 -.73 1.3 1. 53 L333 20.5 -4.2 -1.28 .7 • 89 L339 28 .2 3. 5 1.09 .5 • 60 L616 23.7 -1.0 -.29 .5 .60 L643 22.0 -2.7 -.83 1.6 1.95

GR* MEAN - 24.7 K A N UNITS GRAND MEAN

SD MEANS 3.3 K A N UNITS SD OF MEANS AVERAGE SDR - .8 K A N UNITS

L65 1 61.5 36.8 11.30 . 8 1.00 L668 60. 2 35.5 10.90 .9 1. 10 TOTAL NUMBER OF LABORATeRIE S BEPOHTING » 1 1 Best values: E48 25 K & N units B58 61 K & N units

The following laboratories were omitted from the grand means because of extreme test results; 126.

SAMPLE HEAT SET OFFSET BOOK TEST D. 4 B5e 76 GRAMS PER SQUARE METER

MEAN DEV N® DEV SDR R« 3DR VAR F LAB

42.2 -19.2 -2.77 .6 .62 56K 0 LI 26 54.7 -6.6 -.96 1.0 1.28 56K O LI 49 61.9 .5 .08 .2 .23 56K 6 L 1 82 64.7 3.4 .49 .6 .66 56K O L213 64.9 3.5 .51 1.2 1.56 56K 0 L291

53. 1 -8.3 -1. 19 I. 1 1.46 56K e L333

71.6 10.2 1.48 .5 .64 56K o L339

66.7 5.4 .77 .5 .67 56K o L6 16 53.2 -8. 1 -l. 17 l.C 1. 23 56K 0 L643 61.4 K A N UNITS TEST DETERMINATIONS • 4 6.9 K A N UNITS 8 LABS IN GRAND MEANS AVERAGE SDR • .7 K 4 N UNITS

31.7 -29.6 -4.28 .« 1. 16 560 L651

30. 1 -31.3 -4.52 .3 .46 560 L686

REPORT NO* 58G TAPPI C6LLAB6RATI VE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS 156-1 TABLE 2 KAN INK ABSORPTION

LAB MEANS COORDINATES AVG CODE F E48 B58 MAJOR MINOR fi. SDR VAR PROPERTY TEST INSTRUMENT -CONDITIONS

L33 3 0 20.5 53. 1 -9.2 1.3 1. 18 56 K INK ABSORPTION, KAN INK TEST

L643 0 22.0 53.2 -8.6 -.0 1.62 56 K INK ABSORPTION, KAN INK TEST

L29 1 O 22.3 64. 9 2.6 3.4 1.55 56K INK ABSORPTION, KAN INK TEST

LI 49 0 23.7 54.7 -6.6 -1.2 .94 56 K INK ABSORPTION, KAN INK TEST

L616 o 23.7 66.7 4.8 2.6 .63 56 K INK ABSORPTION, KAN INK TEST

L339 0 28.2 71.6 10.8 -. 1 .62 56 K INK ABSORPTION, KAN INK TEST

L213 o 28.4 64.7 4.4 -2.4 1.00 56 K INK ABSORPTION, KAN INK TEST

L 1 82 0 28.7 61.9 1.8 -3.6 .46 56K INK ABSORPTION, KAN INK TEST

L688 60.2 30. 1 -18.3 -43.7 .78 560 INK ABSORPTION: OWN METHOD

L651 61.5 31.7 -16.3 -44.4 1.08 56© INK ABSORPTION

:

OWN METHOD

LI 26 0 74.9 4 2.2 -2.1 -53.7 .74 56 K INK ABSORPTION, KAN INK TEST GMEANS

:

24.7 61.4 1.00 95* :ELLIPSE: 25.2 6.3 WITH GAMMA - 71 DEGREES

21
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS 157-1 TABLE 1 BYDROGEN I6N CONCENTRATION (PH), COLD

TAPPI STANDARD T509 OS-77 SAMPLE PRINTING

LAB J78 89 GEAMS PER SQUARE METER

CODE MEAN DEV N• DEV. SDR B. SDR

LI 74C 8. 180 .84 1 5.86 .045 1.05

LI 820 7.300 -.039 -.27 • 014 .33

L251C 7.472 . 133 .93 .01 1 .26

L32 8 7. 120 -.219 1.53 .027 .64

L356 7.342 .003 • O .030 .71

L44 2 7.462 .123 .86 • 130 3.05

GR. MEAN - 7.339 PH UNITS GRAND MEAN

SD MEANS - .143 PH ONUS SD OF MEANS AVEBAGE SDR - .043 PH UNITS

TOTAL NUMBER OF LABORATORIES REPORTING - 6

Best values: J78 7.3 pH units

J75 6.2 pH units

The following laboratories were omitted from the grand means because of extreme test results: 174C.

SAMPLE PRINTING TEST D. - 5 J75 76 GRAMS PER SQUARE METER

MEAN DEV N .DEV SDR R. SDR VAR F LAB

7.200 1.011 4.46 .000 .00 57F ft L174C

6.240 • 051 .22 .055 1.92 57D 6 L182C

6.288 .099 .44 .01 1 .38 57P 0 L251C

5.800 -.389 1.72 .035 1.24 57M a L328 6.388 • 199 .88 .01 1 .38 57V a L356

6.231 .04 1 .18 .031 1.08 576 6 L4 42

6. 189 PH UNITS TEST DETERMINATIONS 5

• 226 PH UNITS 5 LABS IN GRAND MEANS AVERAGE SDR » • 029 PH UNITS

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T57-1 TABLE 2 HYDROGEN ION CONCENTRATION (PH), COLD

TAPPI STANDARD T509 OS-77 LAB MEANS C60RDINATES AVG C0DE F J78 J7 5 MAJ0R MINOR R. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L32 8 a 7. 120 5.800 -.447 -.00 1 • 94 57 M PH, COLD, BECKMAN ZER0MATIC

LI 82C 0 7.300 6.240 .025 ,059 1, 13 57 D PH, COLD, RADIOMETER TYPE PH M 28

L3 56 a 7.342 6.388 • 174 ,095 .55 57V PH, COLD, BECKMAN EXPAND0MATIC

L442 a 7.462 6.231 • 096 -.086 2,06 570 PH. C0LD, 6RI6N DIGITAL I0NALYZER

L251C a 7.472 6. 288 .151 -. 067 • 32 57 P PH, C0LD , RADIOMETER TYPE PH M64

LI 74C tt 8. 180 7.2C0 1,294 -• 234 .53 57F PH, C0LD, FISHER ACCUMET MODEL 220 GMEANS

7.339 6. 189 1.00 95% .ELLIPSE: 1,294 ,395 WITH GAMMA - 60 DEGREES

22
REPORT NO. S8G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS TS7-2 TABLE 1 HYDROGEN ION CONCENTRATION (PH), HOT

TAPPI STANDARD T435 OS-77 SAMPLE PRINTING SAMPLE PRINTING TEST D. - 5 LAB J78 89 GRAMS PER ,SQUARE METER J75 76 GRAMS PER SQUARE MBTER

CODE MEAN DEV N • DEV SDR R. SDR MEAN DEV N .DEV SDR R. SDR VAR F LAB

LI 28 7,812 103 -.49 • 046 1.32 5.756 -•085 -.22 .034 .98 S7L 0 LI 28

LI 62 7,926 • 012 • 06 .067 1.90 5* 470 -.371 -.94 .070 1.99 57C 0 LI 62 L174H 8.2C0 • 266 1 *37 • 000 .00 6.400 • 559 1.42 • 000 .00 57G 0 L174H

LI62H 7,720 194 -•93 .027 .78 5,738 -.103 -.26 .036 1.04 S7E 0 LI 82

H

GR» MEAN - 7.914 PH UNITS GRAND MEAN - 5.841 PH UNITS TEST DETERMINATIONS - 5 SD MEANS * , 208 PH UNITS SD OF MEANS - ,395 PH UNITS 4 LABS IN GRAND MEANS AVERAGE SDR • .035 PH UNITS AVERAGE SDR • .035 PH UNITS

TOTAL NUMBER OF LABORATORIES REPORTING * 4

REPORT NO, 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T57-2 TABLE 2 HYDROGEN ION CONCENTRATION (PH), HOT

TAPPI STANDARD T435 OS-77

LAB MEANS COORDINATES AVG CODE F J78 J7 5 MAJOR MINOR R. SDR VAR PROPERTY—-TEST INSTRUMENT-- -CONDITIONS

L182H 0 7.720 5.738 -. 173 • 137 .91 57 E PH. HOT, RADIOMETER TYPE PH M 28

LI 2 8 0 7.812 5.756 -.1 19 .060 1.15 57L PH. HOT, L»N

LI 62 0 7.926 5. 470 -.335 -• 160 1.94 57C PH, HOT, CORNING MODEL 12 RESEARCH METER

L174H 0 8.200 6.400 .627 -.036 .00 57G PH. HOT, FISHER ACCUMET MODEL 220 GUEANS 7.914 5. 841 1.00 95% ELLIPSE: 3.250 .972 WITH GAMMA - 66 DEGREES

23
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T60-1 TABLE 1 OPACITY <89% REFLECTANCE BACKING) IN PERCENT

TAPPI STANDARD 1425 OS-75. OPACITY OF PAPER <15 DEG. /DIFFUSE , ILL UM INANT A) - BAL TYPE

SAMPLE B6ND SAMPLE SEMI BLEACHED TEST D. 1 10 LAB £86 79 GRAMS PER SQUARE METER B21 65 GRAMS PER ;SQUARE METER

C0DE MEAN DEV N. DEV SDR 2. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

LI 05 90*40 .65 1.21 .59 1.66 74.00 1.64 1.54 .85 .04 60H G LI 05

LI 08 89*90 .15 .28 .41 1.16 72.25 -. 1 l -. 1 1 .44 .44 6 OB G L 1 08

LI 1 6 89.73 -.02 -.03 .35 1. 00 72.49 . .3 . 13 1.19 1. 17 60B O LI 18

LI 2 1 90.09 .34 .63 .51 1. 44 72.48 „ 12 . 12 1.56 1.53 60B 6 LI 2

1

LI 2 2 89.41 -.34 -.63 .30 .86 71.38 -.98 -.98 .74 .73 60D e LI 22

LI 23 89.25 -.50 -.92 .32 .91 72.79 .43 .43 1.09 1.07 60W G LI 23

LI 24 89.39 -.36 -.66 .49 1.40 72.63 .27 .27 .95 .94 60U e LI 24

LI 25 89.27 -.48 -.89 .30 . 85 71.02 -1.34 - 1. 34 1.13 1.11 60H G LI 25

L131 88.43 -1.32 -2.44 .21 .58 70.67 -1.69 -1.69 .91 .89 60R G L 1 3

1

LI32 89.4 8 -.27 -.50 .25 .72 71.02 -1.34 -1.34 1.21 1.19 60b G L 1 32

L 1 34 89.98 .23 .43 .28 .79 72. 84 .48 .48 1.05 1.03 6 0S G LI 34

LI 36 89.40 -.35 -.65 .33 .94 72. 41 .05 .05 1.00 .98 60 H G LI 36

LI 39 89.50 -.25 -.46 .35 .99 71.68 -.68 -.68 .85 .84 6 0a 0 LI 39

LI 4 6H 89.29 -.46 -.85 .30 • 84 71.20 -1.16 -1.16 1.22 1.20 6 OH 0 L148H

LI 50 90.20 .45 .64 .42 1.20 74. 10 1.74 1.74 .01 . 80 60B 0 LI 50

LI 52 90.05 .30 .56 .23 .64 73.08 .72 .72 .88 . 86 6CB 0 LI 52

LI 53 89.95 .20 .37 .64 1. 83 72.95 .59 .59 .69 .67 60B 6 LI 53

LI 57 90.35 .60 1.12 .41 1. 17 72.95 .59 .59 1.82 1.79 60B 0 LI 57

LI 58 90.38 .63 1.17 .50 1.41 73.80 1.44 1.44 1.19 1.17 60D 0 L158

LI 59 89.6 1 -. 14 -.26 .20 .57 71.04 -1.32 -1.32 1.03 1.01 6 OR 0 LI 59

LI 6 2 90.01 .26 .49 .33 • 93 72.22 -.14 -. 14 .89 .87 60W 0 L 1 62

Li 66 ee.76 -.99 -1.83 .58 1.63 71.37 -.99 -.99 1.57 1.54 60B 0 LI 66 L173A 90.30 .55 1.02 .48 1.37 72.20 -. 16 -. 16 .92 .90 60 B 0 LI 73

A

L190C 89.08 -.67 -1.24 .34 .97 70. 16 -2.20 -2.21 1.41 1. 39 6 OB 0 L190C

L190R 89.77 .02 .04 .37 1.04 7 2.64 .20 .28 1.21 1.19 60B 0 L190R

L20 6 90.00 .25 .47 .34 .95 73.38 1.02 1.02 1.29 1.26 6 OB 0 L206

L21 OB 89.93 . 1 8 .34 .29 .82 73.21 .85 . 85 .93 .92 60B 0 L210B

L21 OD 90.14 .39 .73 .35 1. 00 73. 07 .71 .71 .79 .78 60D 0 L210D

L21 IS 88.42 -1.33 -2.46 .38 1. 08 69.68 -2.68 -2.69 1.21 1. 19 60R «• L21 IS L212 90.50 .75 1.40 .71 2.0 l 72. 80 .44 .44 .79 .78 60B 0 L2 1

2

L21 3 90.11 . 36 .67 .45 1.26 72. 84 .48 .48 .91 .89 60B 0 L213 L223B 90.11 . 36 .67 .39 1.10 72.41 .05 .05 1.40 1.37 60B 0 L223B

L22 5 90 .91 1.16 2.16 .64 1. 82 74.62 2.26 2. 26 1.11 1.09 60B 0 L225 L226B 88.86 -. 89 -1.65 .30 . 86 70. 84 -1.52 - 1. 52 .74 .73 60B 0 L226B

L22 8 89.44 -.31 -.57 .27 .76 72.35 -.01 -.01 .91 .90 60H 0 L228

L230 89.92 . 17 .32 .18 • 51 72. 02 -.34 -.34 .50 .49 60B 0 L230 L236B 89.02 -.73 -1.35 .64 1.81 71.22 -1.14 -l. 14 .49 .49 6 OB 0 L236B

L238A 88.38 -1.37 -2.54 .24 • 69 70.79 -1.57 - 1.57 .54 .53 60R * L238A

L24I e9.55 -.20 -.37 .18 .52 72.77 .4 1 .41 1.06 1.04 60B 0 L241 L243 89.56 -.19 -.35 .44 1 • 24 72.01 -.35 -.35 .74 .73 60B 0 L243

L254 90.20 .45 .84 .41 1. 17 72.06 -.30 -.30 1.09 1.07 60H 0 L254 L255 89.87 .12 .23 .21 .60 72.00 -.36 -. 36 .65 .64 60B 0 L255

L259 89.99 .24 .45 .45 1. 28 73. 10 .74 .74 .04 .03 60B 0 L259

L26 1 90.47 .72 1.34 .35 1. 00 73.20 .04 .84 1.06 1 . 04 60B 0 L261 L262 90.36 .6 1 1.14 .27 • 77 72.80 .44 .44 .08 .87 60R 0 L262

L27 5 89.34 -.4 1 -.76 .37 1.05 71.53 -.83 -.83 .85 . 83 6 OR 0 L275

L27 8 90.00 .25 .47 .59 1.67 72.93 .57 .57 .90 .89 6 OB 0 L278

L28 l e9.77 .02 .04 .24 .68 72. 92 .56 .56 .91 .89 60D 0 L281

L2 85D 89.52 -.23 -.42 .28 . 80 72.08 -.28 -.28 1.38 1.35 6 OD 0 L285D

L2 85R 89.14 -.61 -1.13 .21 • 60 7 1.26 -1. 10 -1.10 .88 . 86 60R 0 L285R

L28 8 90.03 .28 .52 .46 1.30 72. 13 -.23 -.23 1.12 1.10 60D 0 L288

L30 l 89.61 -. 14 -.26 .23 • 66 72. 22 -.14 -. 14 .71 .70 60B 0 L301 L30 5 89.67 -.08 -. 14 .16 • 52 71. £2 -.84 -.84 .87 . 85 60S 0 L305

L30 8 90.45 .70 1.30 .22 • 62 73. 13 .77 .77 1.35 1.33 6 OH 0 L308

L3 1 5 89. 21 -.54 -1.00 .35 1.00 71.26 -1.10 -1.10 1.42 1.39 6 OD 0 L315

L317 90.04 .29 .54 .30 . 86 72.55 .19 . 19 .63 .62 60B 0 L317

L31 8 90.05 .30 .56 .44 1.24 73.35 .99 .99 .75 .73 6 OB 0 L318

L323 89.92 .17 .32 .36 1.01 72.36 -.00 -. 00 1.14 1. 12 60W 0 L3 23 L32 6 89.60 -.15 -.27 .44 1.25 72.84 .48 .48 1.71 1.68 60B 0 L326

L32 8 90.60 .85 1.58 .70 1.98 72.60 .24 .24 1. 43 1.41 60B 0 L3 28 L33 9 89.0 0 -.75 -1.39 .47 1.34 90.00 17.64 17.67 .00 .00 6 OB 0 L339 L349 89.75 .00 .00 .19 • 54 72. 80 .44 .44 .75 .74 60D 0 L349

L3 52 89.18 -.57 -1.05 .22 • 62 72. 10 -.26 -.26 .69 .68 60R 0 L352

L354 89.00 -.75 -1.39 .00 .00 71. 20 -1.16 -1.16 .79 .78 6 OB 0 L354

L39 0 89.92 . 17 .32 .27 • 75 73.92 1.56 1.56 1.92 1.89 60B 0 L390 24
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T60-1 TABLE I ePACITY <89* REFLECTANCE BACKING) IN PERCENT

TAPPI STANDARD T425 OS-75, OPACITY OF PAPER <15 DEG. /DIFFUSE . ILLUMINANT A) - B4L TYPE

SAMPLE BOND SAMPLE SEMI BLEACHED TEST D® ® 10 LAB E86 79 GRANS PER SQUARE METER B21 65 GRAMS PER SQUARE MBTER

CODE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB L396 89.60 -.15 -.27 .44 1. 24 71.38 -.98 -.98 .80 .79 60B 0 L396 L523 89.98 .23 .43 .18 • 50 72.60 .24 .24 .86 .84 60S <3 L523

L543 89. 40 -.35 -.65 .49 1 • 38 72.67 .31 .31 .53 .52 60D 0 L543

L567 91.02 1.27 2.36 .38 1.08 75.25 2.89 2.89 1.50 1.47 60D e L567

L573 89.81 .06 .12 .22 • 63 73. 24 .88 .88 .50 .49 60H 0 L573

L58 1 89.92 .17 .32 .42 1*20 72. 13 -.23 -.23 1.89 1.86 60B 0 L581 L587 89.68 -.07 -. 13 .43 1.21 71.79 -.57 -.57 1.22 1. 20 60B 0 LS87 L592 88.64 -1.11 -2.06 .37 1. 06 71.11 -1.25 -1.25 .86 .84 60W 0 L592

L594 89.73 -.02 -.03 .35 .99 73.68 1.32 1.32 1.72 1.69 60D 0 L594

L59 7 e9.98 .23 .43 .06 • 18 71.35 -1.01 -1.01 .88 .87 60B 0 L597 L599 89.60 -. 15 -.27 .32 .90 74.35 1.99 1.99 1.31 1.29 60B X L599

L608 91. 28 1. 53 2. 84 .32 .91 76.65 4.29 4.30 .72 .71 60D 0 L608 L673R 69.93 . 1 8 .34 .21 • 60 72.71 .35 .35 .81 . 80 60B 0 L673R

L673T 89.75 .00 .00 .20 • 56 73.08 .72 .72 .91 .89 60B 0 L673T

L688 90.51 .76 1.41 .22 .63 73.33 .97 .97 .79 .77 60B 0 L688

L692 89.87 .12 .23 .44 1. 26 72.61 .25 .25 1.57 1.55 60D 0 L692

GR. MEAN • 89.75 PERCENT GRAND MEAN - 72.36 PERCENT TEST DETERMINATIONS * 10 SD MEANS • .54 PERCENT SD OF MEANS • 1.00 PERCENT 78 LABS IN GRAND MEANS AVERAGE SDR - .35 PERCENT AVERAGE SDR • 1.02 PERCENT

LlOO 89. 70 -.05 -.09 .21 . 58 72.01 -.35 -.35 .43 .43 60E LiOO

L232 89.05 -.70 -1.29 .44 1.24 71.30 -1.06 -1.06 .26 .25 60P L232 L249 88.90 -.85 -1.57 .32 .90 71.28 -1.08 -1.08 1.17 1. 15 60P L249

L256 88.70 -1.05 -1.94 .19 . 53 71.44 -.92 -.92 1.53 1.51 6 ON L256

L2t> 0 89.75 . 00 .00 .42 1.21 72.00 -.36 -.36 .67 .66 60P L260

L312 88.30 -1.45 -2.69 .26 .73 70. 10 -2.26 -2.27 .88 . 86 60P L3I2 L380 89.00 -•75 -1.39 .47 1.34 70.40 -1.96 - 1.96 .84 .83 60P L380

L687 89. 25 -.50 -.92 .35 1. 00 71.60 -.76 -.76 .84 .83 60P L6 87 TOTAL NUMBER OF LAB 6 KATOR I E S REPORTING » 89

Best values: E86 89.8 + 0.9 percent

B21 72.4 + 1.5 percent

The following laboratories were omitted from the grand means because of extreme test results: 339,

608.

25
REPORT NO. 58G TAPPl COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T60-1 TABLE 2 OPACITY ( 89* REFLECTANCE BACKING) IN PERCENT

TAPPl STANDARD T425 OS-75, OPACITY OF PAPER <15 DEG# /DIFFUSE , ILLUMINANT A) - BAL TYPE

LAB MEANS COORDINATES AVG CODE F E86 B2 1 ja-Ajes MINOR E. SOB VAR PROPERTY TEST INSTRUMENT CONDITIONS

L312 88*30 70. 10 -2.66 .35 .60 60P OPACITY < WHITE BACKING ), PHOTOVOLT

L23 8A * ee#38 70. 79 -2.00 .57 .61 60R OPACITY < WHITE BACKING , , THY I NG— ALBERT < FORMERLY SRL ) L2! 1 S * 88*42 69.68 -2.99 .07 1.14 60 R OPACITY < WHITE BACKING), THWING-ALBERT < FORMERLY SRL ) LI 3 1 0 88.43 70.67 -2.09 .48 .74 60R OPACITY < WHITE P^CKJIw ), THWING-ALBERT < FORMERLY SRL)

L59 2 0 88*64 71. 1 1 -1.60 .47 .95 60W OPACITY < WHITE BACKING ), HUYGEN,DIGI TAL L256 88*70 71.44 -1.28 .56 1.02 oON OPACITY i WHITE BACKING ), HUNTER

L 166 o e8.76 71.37 -1.32 .48 1.59 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L226B o 88.86 70.84 -1.75 .16 .79 60B OPACITY < WHITE BACKING ) , BAUSCH LOMB

L249 88*90 71. 28 -1. 34 .31 1.03 60P OPACITY < WHITE BACKING ). PHOTOVOLT

L380 89*C 0 70.40 -2.09 -.15 1.08 60P OPACITY < WHITE BACKING ). PHOTOVOLT

L354 o 89 .0 0 71.20 -1.37 . 19 .39 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L339 it 89.00 90.00 15.66 8.15 .67 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L23 6B 0 89.02 71. 22 -1.34 .18 1.15 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L232 89.05 71.30 -1.26 .18 .75 60P OPACITY < WHITE BACKING ), PHOTOVOLT

L19 0C 0 89.08 70. 16 -2.28 -.33 1.18 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L285R 0 89. 14 71.26 -1.25 .08 .73 60 R OPACITY ( WHITE BACKING ), THWING-ALBERT ( FORMERLY SRL ) L3 52 0 89.18 72. 10 -.48 .40 .65 60 R OPACITY ( WHITE BACKING), THWING-ALBERT < FORMERLY SRL ) L31 5 o 89.21 71. 26 -1.23 .02 1.19 60D OPACITY ( WHITE BACKING ), BNL-2

L687 89.25 71. 60 -.90 . 13 .92 60P OPACITY ( WHITE BACKING ), PHOT0V0IT

LI 23 o 89.25 72.79 . 18 .63 .99 60 W OPACITY ( WHITE BACKING ), HUYGEN, DIGITAL

L 1 25 0 89.27 71.02 -1.42 -.13 .98 6CH OPACITY ( WHITE BACKING ) , HUYGEN L148H o 89.29 71. 20 -1.25 -.08 1.02 60 H OPACITY ( WHITE BACKING ), HUYGEN

L275 0 89.34 71.53 -.93 .02 .94 60 R OPACITY < WHITE BACKING ), THWING-ALBERT < FORMERLY SRL ) Ll 24 0 89.39 72. 63 .09 .44 1. 17 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L543 0 89. 40 72.67 . 13 .45 .95 60D OPACITY < WHITE BACKING ), BNL-2

Ll 36 o 89.40 72. 4i -. 10 .34 .96 60H OPACITY < WHITE BACKING ), HUYGEN

Ll 22 0 89.41 71.38 -1. 03 -. 1 1 .79 60D OPACITY < WHITE BACKING ), BNL-2

L228 0 89.44 72.35 -. 14 .27 .83 60H OPACITY < WHITE BACKING ), HUYGEN

Ll 3 2 0 89.48 71.02 -1.33 -.33 .95 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

Ll 39 0 89.50 71. 68 -.72 -.06 .91 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L285D 0 89.52 72.08 -.35 .09 1.08 60 D OPACITY ( WHITE BACKING ) , BNL-2

L24 1 0 89.55 72.77 .29 .35 .78 60B OPACITY ( WHITE BACKING ). BAUSCH LOMB

L243 0 89.56 72.01 -.40 .02 .99 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L599 X 89.60 74.35 1.74 .98 1.09 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L396 0 89.60 71. 38 -.95 -.28 1.01 60B OPACITY < WHITE BACKING ), BAUSCB LOMB L326 0 CD • O' O 72. 84 .37 .34 1.46 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L 1 59 0 89.61 71.04 - 1.26 -.43 .79 60R OPACITY < WHITE BACKING ). THWING-ALBERT < FORMERLY SRL ) L30 1 o 89.61 72.22 -. 19 .07 .68 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L305 0 89.67 71. 52 -. 80 -.29 .69 60R OPACITY < WHITE BACKING ), THWING-ALBERT < FORMERLY SRL ) L587 0 89.68 71.79 -.55 -.18 1.20 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L100 89.70 72.01 -. 34 -. 1 1 .50 6CE OPACITY ( WHITE BACKING), ZEISS ELREPHO, FMY—C( 10 ) FILTER

Ll 1 8 0 89.73 72.49 . 1 1 .07 1.08 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L59 4 o 89.73 73.68 1.19 .57 1.34 60D OPACITY < WHI TE BACKING ), BNL-2

L26 0 89.75 72.00 -.33 -.15 .93 60P OPACITY < WHITE BACKING ), PHOTOVOLT L673T 0 89.75 73.08 .65 .30 .72 60B OPACITY < WHITE BACKING ), BAUSCH LOMB L349 0 89.75 72. 80 .40 .18 .64 60D OPACITY < WHITE BACKING )

,

BNL-2 L19CR 0 89.77 72.64 .26 .10 1.1 1 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L281 0 89.77 72. 92 .52 .22 .79 60D OPACITY < WHITE BACKING ), BNL-2

L573 0 89.8 1 73. 24 .82 .32 .56 6 OH OPACITY < WHITE BACKING ), HUYGEN

L25 5 0 89.87 72.00 -.28 -.26 .62 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L69 2 0 89.87 72. 61 .28 -.01 1.40 60D OPACITY < WHITE BACKING ), BNL-2

Ll 0 8 o 89.90 72. 25 -. 04 -.18 .80 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L58 1 0 89.92 72. 13 -. 14 -.25 1. 53 60 B OPACITY < WHITE BACKING ), BAUSCH LOMB

L39 0 6 89.92 73. 92 1.49 .50 1.32 60 B OPACITY < WHITE BACKING ), BAUSCH LOMB

L23 0 0 89.92 72.02 -.24 -.30 . 50 6 OB OPACITY < WHITE BACKING ), BAUSCH LOMB

L323 0 89.92 72.36 .07 -.16 1.06 60 W OPACITY ( WHITE BACKING ), HUYGEN, DIGITAL

L673R 0 89.93 72. 71 .39 -.02 .70 60B OPACITY < WHITE BACKING ), BAUSCH LOMB L210B o 89.93 73. 21 . 85 . 19 .67 60b OPACITY < WHITE BACKING ), BAUSCH LOMB

Ll 53 0 89.95 72.95 .62 .07 1.25 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

Ll 3 4 o 89.98 72. 84 . 53 -.01 .91 60R OPACITY < WHITE BACKING )

,

THWING-ALBERT < FORMERLY SRL ) L59 7 0 89.98 71.35 -.82 -.64 .52 60B OPACITY < WHITE BACKING ), BAUSCH LOMB L523 0 89.98 72.60 .31 -. 1 1 .67 60R OPACITY < WHITE BACKING ), THWING-ALBERT < FORMERLY SRL ) L259 0 89.99 73. 10 .77 .09 1.05 60 B OPACITY < WHITE BACKING )

,

BAUSCH LOMB L206 0 90.00 73. 38 1. 03 .20 1.11 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L2 78 6 90.00 72.93 .62 .01 1.28 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

26
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T60-1 TABLE 2 OPACITY (89* REFLECTANCE BACKING! IN PERCENT

TAPPI STANDARD T425 OS-75, OPACITY OF PAPER (15 DEG. /DIFFUSE, ILLUMINANT A) - BAL TYPE LAB MEANS COORDINATES A VG CODE F E86 E21 MAJOR MINOR R, SDR VAN PROPERTY TEST INSTRUMENT— -—CONDITIONS

L 1 6 2 6 90.01 72.22 -.02 -.30 .90 60W GPACITY (WHITE BACKING ). HUYGEN, DIGITAL

L288 ft 90.03 72. 13 -.09 -.35 1.20 60D aPACITY ( WHITE BACKING ). BNL-2

L31 7 fl 90.04 72.55 .29 -.18 .74 60 B 6PACITY ( WHITE BACKING ), BAUSCH LOMB

L 1 52 O 90.05 73.08 .78 .03 .75 60B aPACITY ( WHITE BACKING >, BAUSCH LOMB

L3 1 6 o 90.05 73.35 1.02 .15 .99 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

Li 2

1

a 90.09 72.48 .25 -.26 1.48 60B OPACITY ( WBITE BACKING ), BAUSCH LOMB

L22 3B a 90. 1 1 72.4 1 .20 -.31 1.24 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L2i 3 a 90. 1 1 72. 84 .59 -. 12 1.08 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L21 OD a 90. 14 73.07 .81 -.05 .89 60D OPACITY ( WHITE BACKING >, BNL-2

L i 50 a 90.20 74. 10 1.77 .33 1.00 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L254 6 90.20 72.06 -. 08 -.54 1. 12 60B OPACITY < WHITE BACKING ), HUYGEN

Li 73A 6 90.30 72. 2 0 .09 -.57 1.14 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

LI 57 a 90.35 72.95 .79 -.30 1.48 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L262 a 90.36 72. 80 .66 -.37 .82 60 R OPACITY ( WHITE BACKING ), THWING-ALBERT (FORMERLY

Li 58 a 90.38 73.80 1. 57 .04 1.29 60D OPACITY ( WHITE BACKING >, BNL-2

L1C5 a 90.40 74.00 1.76 .10 1.25 60 H OPACITY ( WHITE BACKING ), HUYGEN

L30 8 a 90.45 73. 13 .99 -.31 .97 60H OPACITY ( WHITE BACKING ), HUYGEN

L261 a 90.47 73.20 1. 07 -.30 1.02 60B OPACITY ( WHITE BACKING ), BAUSCH • LOMB

L212 a 90.50 72. 80 .72 -.50 1.39 60 B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L68 8 a 90.51 73.33 1.20 -.28 .70 60B OPACITY ( WHITE BACKING ), BA USC

H

LOMB

L328 a 90.60 72.60 . 58 -.67 1.69 60 B OPACITY ( WHITE BACKING )

,

BAUSCH LOMB

L225 a 90.91 74.62 2.54 -.10 1.46 60B OPACITY ( WHITE BACK ING ), BAUSCH LOMB

L56 7 * 91.02 75. 25 3. 16 .07 1.28 60D OPACITY ( WHITE BACKING ), BNL-2

L608 * 9 1.28 76.65 4. 53 .43 .61 60D OPACITY ( WHITE BACKING ), BNL-2 GMEANS

:

89.75 72.36 1.C0 95% ELLIPSE: 2.75 .77 WITH GAMMA - 64 DECREES

27
PERCENT

OPACITY 9 B4L TYPE, 897. BACKING

SAMPLE E86 = 89.7 PERCENT SAMPLE B21 = 72.4 PERCENT

PERCENT

28
REPORT NO. 58G TAPPI CO LLAB0RAT I VE REFERENCE PROGRAM FEBRUARY 1975 ANALYSIS T60-2 TABLE 1 OPACITY (PAPER BACKING) IN PERCENT

TAPPI STANDARD T425 0S-7S, OPACITY OF PAPER (15 DEG. /DIFFUSE, ILLUMINANT A) - B4L TYPE

SAMPLE BOND

LAB E86 79 GEAMS PER SQUARE METER

CADE MEAN DEV N. DEV SDR R. SDR

LI 18 51.40 -•09 -•32 .37 1.24 L190C 91.50 .01 .04 .30 1.01 L190R 91.83 .34 1 .23 .24 . 80 L236B 51.43 -.06 -.21 .43 1.44

L24 3 91.73 • 24 • 87 .21 .71 L543 51.04 -.45 1.61 .24 . 80

GR. MEAN - 51.49 PERCENT GRAND MEAN

SD MEANS • .28 PERCENT SD OF MEANS AVERAGE SDR • .30 PERCENT

TOTAL NUMBER OF LABORATORIES REPORTING - 6

Best values: E86 91.5 percent

B21 75.5 percent

SAMPLE SEMI BLEACHED TEST D. - 10 B21 65 GRAMS PER SQUARE METER

MEAN DEV N.DEV SDR R. SDR VAR F LAB

75.61 .00 .01 .91 .83 60C 0 LI 18 75*59 -.02 -.06 1.03 .93 6 OC 0 L190C

76.06 .45 1.66 1.71 1.55 6 OC <5 L & 90R 75.67 .06 .23 .66 .60 6 OC 0 L236B

75.49 -.12 -.43 .97 .89 60C 0 L243 75.22 -.39 -1.42 1.32 1.20 6 0V 0 L543

75.61 PERCENT TEST DETERMINATIONS - 10 .27 PERCENT 6 LABS IN GRAND MEANS AVERAGE SDR » 1. 10 PERCENT

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T60-2 TABLE 2 OPACITY (PAPER BACKING) IN PERCENT

TAPPI STANDARD T425 OS-75, OPACITY OF PAPER (15 DEG./D IFFUSE , ILLUMINANT A) - BAL TYPE

LAB MEANS COORDINATES AVG C0DE F E86 B2I MAJ0R MINOR R. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L543 0 91.04 75.22 -.59 .04 1.00 60V OPACITY < PAPER BACKING DIANe/BNL

LI 1 8 0 91.40 75.61 -. 06 .06 1.03 60C OPACITY ( PAPER BACKING

)

# BAUSCH LOMB

L236B 0 91.43 75. 67 . 00 .09 1.02 60C OPACITY ( PAPER BACKING

)

# BAUSCH LOMB

LI 9 OC 0 91.50 75. S9 -.00 -.02 • 97 60C OPACITY < PAPER BACKING ), BAUSCH LOMB

L243 0 91.73 75.49 • 09 -.25 . 80 60C OPACITY ( PAPER BACKING ), BAUSCH * LOMB

L190R 0 91.63 76.06 • 56 .09 1.17 60C OPACITY ( PAPER BACKING ), BAUSCH LOMB

GMEANS

:

91.49 75.61 1«00 95% ELLIPSE: 1. 53 .54 MITH GAMMA • 44 DEGREES

29
REPORT Nd 0 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T60-3 TABLE 1 OPACITY (PAPER BACKING) IN PERCENT

TAPPI SUGGESTED METHOD T519 OS-78, DIFFUSE OPACITY OF PAPER - ILLUMINANT C, ELREPH6 TYPE

SAMPLE BOND SAMPLE SEMI BLEACHED TEST D. » 10 LAB E86 79 GSAMS PER SQUARE METER B21 65 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDR MEAN DEV N . DEV SDR Re SDR VAR F LAB

L100 92o 0

7

.00 .02 .22 1.14 76.65 -.43 -.66 .46 .60 60J 0 L100

LI 50 92.05 -.0 1 -.08 .21 1.08 77 o 05 -.03 -.04 .94 1. 23 6 0J 0 L 1 50 L182E 92.04 -.03 -. 13 .20 1. 04 77. 15 .07 . 10 .69 .91 60J 0 LI 82E L233F 91 .85 -.22 -1.13 .17 . 88 76.22 -.86 - 1.31 .80 1.05 6 OF 6 L233F L236 91.93 -.14 -.71 .19 .97 76o 74 -.34 -.52 . 86 1.14 60J O L236

L242 92.17 .10 .55 .22 1.14 77.65 .57 . 86 .93 1.22 6 0J O L242

L24 4 91 .95 -.12 -.60 .25 1.29 76. 88 -.20 -.31 .73 • 95 6 OF 0 L244 L250T 91.98 -.09 -.45 .27 1.37 76.83 -.25 -.38 .78 1.02 60J o L250T

L25 1 92.04 -.02 -.12 .22 1. 13 76.46 -.62 -.95 .89 1.17 6 OF 0 L251 L309 68.88 -3. IS - 16.69 .30 1. 53 70.36 -6.72 -10.20 .42 .55 60J * L309

L36 0 91.77 -.30 -1.55 .12 .60 76.41 -.67 -1.02 .68 • 89 60F o L360 L446 92.01 -.05 -.28 .19 .96 77. 14 . 05 .08 .67 .88 60J 0 L446

L57 5 92.21 .14 .76 .18 .92 77.42 .34 .51 .97 1.27 6 0 J 0 L575

L59 8 92.50 .43 2.28 .15 .77 78.69 1.61 2.44 .63 .83 60J 0 L598

L67 8 92.34 .28 1.44 .13 .69 77.87 .79 1. 19 .64 • 84 60J 0 L678

GRo MEAN 92.07 PEECEN1 GRAND MEAN - 77.08 PERCENT TEST DETERMINATIONS - 10 SD MEANS “ • 19 PERCENT SD OF MEANS - .66 PERCENT 14 LABS IN GRAND MEANS AVERAGE SDR - .19 PERCENT AVERAGE SDR * .76 PERCENT

L626 91.25 -.82 -4.27 .26 1.36 75.70 -1.38 -2. 10 .59 .77 6 0Q L626 TOTAL NUMBER OF LABORATORIES REPORTING - 16

Best values: E86 92.1 + 0.3 percent

B21 77.0 + 1.0 percent

The following laboratories were omitted from the grand means because of extreme test results: 309.

REPORT NO# 56G TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T60-3 TABLE 2 OPACITY (PAPER BACKING) IN PERCENT

TAPPI SUGGESTED METHOD T519 OS-78, DIFFUSE OPACITY OF PAPER - ILLUMINANT C, ELREPHO TYPE

FEBRUARY 1979

LAB MEANS CeSRDINAlES AVG CODE F E86 B2 1 MAJOR MINOR S. SDR VAR PROPERTY TEST INSTRUMENT-—-CONDITIONS

L309 tt 88.88 70. 36 -7. 32 1.32 1 .04 60 J OPACITY < PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10

)

FILTER

L626 91.25 75. 70 -1.55 .43 1.06 60Q OPACITY < PAPER BACKING ), PHOTOVOLT

L36 0 0 9i .77 76.4 1 -•73 . 1 1 • 74 60F OPACITY i PAPER BACKING), ZEISS ELREPHO, FMY-Cl 10

)

NO TRAP

L233F 0 91.85 76.22 -.89 -.02 o 97 60F OPACITY < PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 ) NO TRAP

L236 0 91.93 76. 74 -.37 .04 1 o 05 60 J OPACITY t PAPER BACKING )

,

ZEISS ELREPHO, FMY-Cl 10 1 FILTER

L244 o 91.95 76. 88 -.23 .06 1.12 60F OPACITY i PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 ) NO TRAP

L2 50T 0 91.98 76. 83 -•27 .02 1.20 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO. FMY-Cl 10

)

FILTER

L446 0 92.01 77. 14 • 04 .07 • 92 60 J OPACITY i PAPER BACKING ), ZEISS ELREPHO. FMY-Cl 10

)

FILTER

Li 82E 0 92.04 77. 15 • 06 .04 • 97 60 J OPACITY < PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 ) FILTER

L251 0 92.04 76.46 -.61 -.14 1.15 60F OPACITY < PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 ) NO TRAP

LI 50 o 92.05 77.05 -. 03 .01 1. 16 60J OPACITY i PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 ) FILTER

Li 0 0 o 92.07 76.65 -•42 -.12 • 87 60J OPACITY i PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10

1

FILTER

L24 2 0 92.17 77.65 .58 .05 1« 18 60 J OPACITY < PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10

)

FILTER

L57 5 0 92.21 77.42 .36 -.05 1.10 60 J OPACITY i PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 > FILTER

L67 8 O 92.34 77.87 . 83 -.06 • 77 60 J OPACITY i PAPER BACKING ). ZEISS ELREPHO, FMY-Cl 10

)

FILTER

L59 8 O 92.50 78.69 1.67 -.00 . 80 60 J OPACITY < PAPER BACKING ), ZEISS ELREPBO, FMY-Cl 10 ) FILTER

GMEANS: 92.07 77.08 1.00 95* .ELLIPSE: 1.96 .21 WITH GAMMA - 74 DEGREES

30
PERCENT

75.0

76.0

77.0

78-0

79

-

OPACITY , ELREPH0 TYPE, PAPER BACKING

SAMPLE E86 = 92.07 PERCENT SAMPLE B21 = 77.08 PERCENT

o _ + . X , « NOT IN GRAND MEANS

C\J

CD ANALYSIS T60-3

LxJ

I Q_

CT

CQ

"nr

o

o

©

©

%

©

©

o

(I ©

SAMPLE E86

90.0 91.0 92.0

PERCENT

93.0 94.0

31
REPORT NO* 58

G

TAPP I COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T65-1 TABLE 1 DIRECTIONAL BLUE REFLECTANCE IN PERCENT

TAPPI STANDARD T452 es -77. 'BRIGHTNESS •; MARTIN SHEETS ( ACBT & GE ) IS STANDARD FOR THIS ANALYSIS

SAMPLE PRINTING SAMPLE PRINTING TEST D. ' 8 LAB J36 94 GEAMS PEE SQUARE METER J79 73 GRAMS PER :SQUARE METER CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

LI 0 8 83*96 .03 .05 .12 .96 68.59 .45 1. 26 .24 1.09 65M © L 1 06

L! 2 2 83*40 -.53 -.68 .09 .75 66. 01 -.13 -.36 . 16 .76 65N © LI 22

LI 52 83*45 -.48 -.80 . 13 1. 06 68.01 -. 13 -.36 .26 l. 20 65N 6 LI 32

LI 58 84* 10 . 17 .28 .09 .75 68.47 .34 .96 .16 .73 65N 6 L l 58

LI 9 OC 83*69 -.24 -.40 .08 .68 68 *r 24 . 10 .28 .18 . 85 65A © L190C

L210M 84.30 .37 .62 .12 .97 68.21 .07 .21 .20 .91 65M © L21CM

L21 ON 84*32 .40 .66 .18 1.48 67.76 -.38 -1. 07 .28 1.28 65N e L210N

L21 1 81*64 -2.29 -3.82 .19 1. 56 68.02 -. 1 1 -.32 .35 1.63 65N a L211 L22 5 83.49 -.44 -.74 . 1 1 .91 68.29 .15 .43 .40 1.85 65N 0 L225 L243 83.31 -.62 -1.03 .17 1.40 67.80 -.34 -.97 .21 .96 65A © L243

L259 83.84 -.OS -. 15 .12 .96 67.61 -.53 -1.50 . 1 1 .52 65M © L259

L27 5 83.70 -.23 -.38 .12 .97 68.57 .44 1.25 .10 .48 65M © L275 L285 65.56 1.63 2.72 .05 .42 68. 17 .04 . 1 1 .17 .77 6 5N * L285

L288 83.72 -.20 -.34 .09 .72 67. 76 -.38 -1.07 .30 1.37 65N © L288

L30 8 65. i 1 i. i a 1.97 .14 1.10 68. 86 .72 2.07 .14 .65 65N © L308

L31 5 63.61 -.32 -.53 .06 .52 67.95 -. 19 -.54 .37 1.71 65N a L3I5

L31 7 83.69 -.24 -.40 .19 1.53 68.00 -.14 -.39 . 1 1 .49 6 5M © L3 17 L523 83.91 -.02 -.03 .11 .91 68. 32 .19 .53 .23 1.04 65N L5 23 L54 3 83.29 -.64 -1.07 .24 1.96 68.55 .41 1. 18 .23 1.08 6 5M © L5 43 L565 83. 56 -.37 -.61 .07 .60 68.27 . 14 .39 .07 .33 65A © L565

L59 8 NO DATA REPORTED FOR SAMPLE J36 67.65 -.49 -1.39 . 17 .78 65M M L598

L636 84. 82 .90 1.49 .07 .57 67.57 — . 56 - 1.6 1 .14 .64 65M © L636

L673R 83.67 -.25 -.42 .15 1.21 67. 85 -.29 -.82 .45 2.07 65N © L673R

L692 80.51 -3.42 -5.69 .38 3. 04 66.36 -1 .78 -5.07 .46 2.12 65N ft L6 92

GR. MEAN • 63.93 PE TCENT GRAND MEAN " 68. 14 PERCENT TEST DETERMINATIONS - 8 SD MEANS • .60 PERCENT SD 8F MEANS -

• 35 PERCENT 21 LABS IN GRAND MEANS AVERAGE SDR - . 12 PERCENT AVERAGE SDR - .22 PERCENT

L 1 0 5 83.65 -.28 -.47 .08 .61 67.49 -.65 -1.86 .11 • 52 65T L 1 05

L21 3 84.25 .32 .53 .09 .75 67.87 -.26 -.75 .22 l • 0 1 6 5T • L2 13 L21 9 85. 20 1.27 2 . 12 . 13 1.06 68.81 • 67 1.93 .37 1.72 65P L219 L223 85.86 1.93 3.22 .07 .60 68.75 .61 1.75 .13 .60 65G L223 L232 85.00 1.07 1.78 .00 . 00 67.94 -.20 -.57 .18 .82 65P L232

L241 84. 16 .23 • 39 .23 1. 88 68.51 .37 1. 07 .10 .46 651 L241 L249 84.51 .58 .97 .11 .91 69.22 1.09 3. 10 .16 • 73 65P L249 L256 83.41 -.52 -.86 .10 . 80 67.34 -.80 -2.29 .12 .55 6 5H L2 56 L260 84.26 .33 .55 . 13 1. 05 69.05 .91 2.60 .08 .35 65P * L260 L278 85.56 1.63 2.72 .32 2. 59 71.15 3.01 8.60 .35 1.62 6 5P L278

L30 1 84.05 .12 .20 .14 1.15 68.32 .19 .53 . 13 .59 65G L301

L31 2 84.87 .95 1.57 .23 1. 87 70.94 2.60 7.99 .18 • 82 65 P L312

L32 1 85.94 2.0 1 3.34 .18 l. 43 70. 00 1.66 5.32 .00 .00 65P L321 L32 8 87.65 3.72 6.20 .18 1.44 71.64 3.50 9.99 .23 1.07 65P L328

L33 9 86.62 2.70 4.49 .35 2. 86 71.87 3.74 1 0.67 .23 1. 07 65P L339

L3 80 84. 12 .20 .33 .23 1.87 72.00 3.86 1 1.03 .00 .00 6 5P L3Q0 L442 91.00 7.07 1 1.77 .17 1.37 72.97 4. 84 13.81 .24 1 • 1 2 6 5T L442

L56 2 87.00 3.07 5. 1 1 .00 . 00 74. 50 6.36 18.17 .00 .00 65P L562

LS 8 7 84.37 .45 • 74 .07 • 57 68. 01 -.13 -.36 .30 1.41 6 51 L587

L59 1 e3. 85 -.08 -. 13 .08 .63 66.79 -1.35 -3. 85 .09 .39 65H L59

1

L626 86.34 2.4 1 4.01 .19 1. 56 70.24 2. 10 6.00 .23 i . 07 65P L6 26 L684 83.77 -.15 -.26 . 16 1.28 66.79 -1 .35 -3.86 .83 3. 84 65H L6 84 TOTAL NUMBER OF LABORATORIES REPORTING - 46

Best values: J36 83.7 + 1.2 percent

J79 68.0 + 0.6 percent

The following laboratories were omitted from the grand means because of extreme test results: 211,

692.

32
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T65-1 TABLE 2 DIRECTIONAL BLUE REFLECTANCE IN PERCENT

TAPPI STANDARD T452 OS-77. fl BRIGHTNESS *

l

MARTIN SWEETS < ACBT & GE > IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG CODE F J36 J79 MAJOR MINOR fi. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L59 8 M 67.65 .78 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE), S-l L692 * 80# 5 1 66. 36 -3. 58 -1.43 2. 58 65N BLUE REFLECTANCE < DIRECTIONAL ). TECHNIDYNE/D I AN0/M. s.. S-4

L2I 1 U 8 1 #6 4 68.02 -2.29 .12 1.60 65N BLUE REFLECTANCE < DIRECTIONAL ), TEC HN I DYNE/D I AN0/M. s.

,

S—

4

L543 0 83.29 66.55 -.60 .47 1.52 65M BLUE REFLECTANCE ( DIRECTIONAL), MARTIN SWEETS ( GE ), S-l L24 3 0 83.31 67. 80 -.65 -.27 1. 1 8 65 A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT).S- 2

Li 22 0 83.40 68. 01 -.54 -.07 .75 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNI DYNE/DI ANO/M. S.. S-4

L25 6 83.41 67. 34 -.59 -.74 .68 65H BLUE REFLECTANCE < DIRECTIONAL ), HUNTER

LI 32 0 83.45 66.01 -.49 -.08 1. 13 65N BLUE REFLECTANCE ( DIRECTIONAL ). TECHNIDYNE/DI ANO/M. s.

,

S-4 L225 0 83.49 68. 29 -.43 .19 1.38 65N BLUE REFLECTANCE (DIRECTIONAL ), TECHNI DYNE/DIANO/M. S.. S-4 L565 0 83.56 68. 27 -.35 .17 .46 65A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT).S- 2

L3i 5 0 83.61 67.95 -.33 -.16 1.1 1 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S-4

L 1 0 5 83.65 67.49 -.34 -.62 • 57 65T BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2M

L673R 0 63.67 67. 85 -.28 -.26 1.64 65N BLUE REFLECTANCE < DIRECTIONAL ), TECHNIDYNE/DI ANO/M. 5. , S-4

LI 9 OC 0 83.69 68.24 -.23 .12 .76 65A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT).S- 2 L3 17 0 83.69 68.0C -.25 -. 1 1 1.01 65 M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE), S- 1 L275 0 83.70 68. 57 -. 18 .46 • 72 65M BLUE REFLECTANCE ( DIRECTIONAL >, MARTIN SWEETS < GE ), S-l L288 0 83.72 67.76 -.24 -.35 1.05 65 N BLUE REFLECTANCE < DIRECTIONAL ), TECHNI DYNE/D I AN0/M. s.. S-4

L68 4 83.77 66. 79 -.29 -1.33 2.56 65H BLUE REFLECTANCE ( DIRECTIONAL >, HUNTER

L259 0 83.8 4 67. 61 -. 14 -.51 • 74 65k BLUE REFLECTANCE < DIRECTIONAL ), MARTIN SWEETS ( GE ), S-l L59 i 83.85 66. 79 -.22 -1.33 • 51 65H BLUE REFLECTANCE ( DIRECTIONAL >. HUNTER

L52 3 0 83.91 68.32 .00 .19 .98 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNI DYNE/D I AN0/M. C

e a S-4

Li 08 0 83.96 68.59 .08 .44 1.03 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE), S- 1 L301 84.05 68.32 . 14 .17 • 87 65G BLUE REFLECTANCE ( DIRECTIONAL ), GARDNER

Li 5 8 0 84.10 68. 47 .20 .32 .74 65N BLUE REFLECTANCE ( DIRECTIONAL >, TECHNI DYNE/DI AN0/M. s.

.

S-4

L38 0 84.12 72.00 . 58 3.82 • 94 65 P BLUE REFLECTANCE ( DIRECTIONAL ). PH0T0V0LT

L24 i 84. 16 68.51 .27 .35 1. 17 651 BLUE REFLECTANCE < DIRECTIONAL ), HUNTER D25D2A

L213 84.25 67. 87 .29 -.29 .88 65T BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2M

L26 0 84.26 69. 05 .42 .87 .70 65 P BLUE REFLECTANCE < DIRECTIONAL ), PH0T0V0LT

L2i OM 0 84.30 68. 21 . 38 .04 .94 6514 BLUE REFLECTANCE < DIRECTIONAL ), MARTIN SWEETS (GE), S-l L21 ON 0 84.32 67. 76 .36 -.41 1.38 65N BLUE REFLECTANCE < DIRECTIONAL ), TECHNID YNE/DI AN0/M. S.. S-4

L58 7 84.37 68.01 .43 -.17 .99 651 BLUE REFLECTANCE < DIRECTIONAL ), HUNTER D25D2A

L249 84.51 69.22 .69 1.02 .82 65 P BLUE REFLECTANCE ( DIRECTIONAL ), PH0T0V0LT

L636 0 84. e2 67. 57 .83 -.65 .61 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE). S-l L3 1 2 84.87 70.94 1. 22 2.69 1.35 65P BLUE REFLECTANCE ( DIRECTIONAL ), PH0T0V0LT

L23 2 85.00 67.94 1.04 -.31 • 41 65P BLUE REFLECTANCE ( DIRECTIONAL >, PH0T0V0LT

L30 8 0 85. 1 1 68. 86 1. 25 .60 .87 65 N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNI DYNE/D I AN0/M. s.

,

S-4

L21 9 85.20 68. 81 1.33 .54 1.39 65 P BLUE REFLECTANCE ( DIRECTIONAL ), PH0T0V0LT

L27 8 85.56 71.15 1. 93 2.83 2.11 65P BLUE REFLECTANCE ( DIRECTIONAL ), PH0T0V0LT

L285 * 85.56 68. 17 1.63 -.13 .60 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNI DYNE/D I AN0/M. s.

.

S-4 L223 85.86 68. 75 1.98 .42 .60 65G BLUE REFLECTANCE ( D I RECTI ONAL ), GARDNER

L321 85.94 70. CO 2. 18 1.65 • 72 65 P BLUE REFLECTANCE l DIRECTIONAL ), PH0T0V0LT

L626 86.34 70.24 2.61 1.85 1 .32 65P BLUE REFLECTANCE ( DIRECTIONAL ), PH0T0V0LT

L339 86.62 71.87 3.06 3.45 1.97 65P BLUE REFLECTANCE ( DIRECTIONAL ), PH0T0V0LT

L562 * 87.00 74. 50 3.69 6.02 .00 65P BLUE REFLECTANCE ( DIRECTIONAL ), PH6T0V0LT

L32 8 87.65 7 1. 64 4. 05 3. 1 1 1. 26 65P BLUE REFLECTANCE ( DIRECTIONAL ). PHOT0V0LT - L44 2 vfl • O O 72. 97 7.52 4. 1 1 1.25 65T BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2M

GME ANS

:

83.93 68. 14 1.00 95* ELLIPSE: 1.64 .94 WITH GAMMA » 5 DEGREES

33
blue reflectrnce, directional

34
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T65-2 TABLE 1 DIFFUSE BLUE REFLECTANCE IN PERCENT (GLOSS TRAP)

TAPPI SUGGESTED METHOD T525 SU-72, BRIGHTNESS OF SAMPLE PRINTING

LAB J36 94 GRAMS PER SQUARE METER

CODE MEAN DEV N. DEV SDR R. SDR

LiCO 64.62 .17 . 36 .09 1. 10 LI 2 i e4.58 .13 .28 .08 .89

LI 36 84.53 .08 .17 .16 1.85

LI 50 84. 15 -.30 -.64 .06 .77

LI 7 0 84.00 -.45 -.96 .00 • 00 L210K 85.05 .60 1.27 .05 .61 L236 84. 82 .37 .76 .08 .90 L242 84.30 -.15 -.31 .08 1.00

L2 5 0T 84.36 -.10 -.21 .13 1. 55 L280 84^29 -.16 -.35 .09 1. 06

L32 5 85.08 .62 1.32 .09 1.10 L349 84.00 -.46 -.97 .16 1. 94 L446 84.09 -.36 -.77 .11 1. 28

L57 3 85.53 1.08 2.29 • o 00 • 90

L57 5 83.98 -.48 -1.01 .05 .62 L598 84. 25 -.21 -.44 .05 .61 L636 84.83 .38 .81 .05 • 63

L680 £3.70 -.76 -1.61 .10 1* 17

GR. MEAN - 84.45 PE HCENT GRAND MEAN

SD MEANS • .47 PERCENT SD OF MEANS AVERAGE SDR a O CD • PERCENT

L289 83.37 -1.08 •2 • 29 • 05 • 55 TOTAL N UMBEfi OF LAE ORATOR IE £ REPOR TI NG - 19

Best values : J36 84.4 + 0 . 7 percent

J79 67.8 ± !• 0 percent

PULP (DIFFUSE ILLUMINATION AND 0 DEG. OBSERVATION)

SAMPLE

J79 73 GRAMS

PRINTING

PER SQUARE METER

TEST D. • 8 MEAN DEV N .DEV SDR R. SDR VAR F LAB 67,47 -.40 -.55 . 16 .92 65F e L100

68, 74 .87 1.21 . 13 .73 65k 6 L 1 2

1

67.65 -.22 -.31 .17 .95 65F O LI 36 67.01 -.87 1. 20 .14 .82 65Q o Li 50 67,60 -.27 -.38 .23 1.33 6 5B 0 LI 70 69,28 1.41 1.95 .20 1.12 6 5 K o L2 10K 67, 94 .07 .09 .09 .53 65F 6 L236 66,75 -1.12 1.55 .32 1.82 65F 0 L242 67.66 -.21 -.29 . 16 .91 65F o L2 50T 67.72 -.15 -.21 .23 1.33 65Q 0 L280 67.98 . 10 . 15 .25 1.41 65F o L325

67. 17 -.71 -.96 .20 1.14 65K 0 L349

67. 38 -.49 -.68 .15 . 85 6 5F 0 L446 68.33 .46 .64 .11 .65 65F 0 L573

67. 56 -.31 -.43 .25 1.41 65F e L5 75 69.21 1.33 1. 85 .09 .52 65K 0 L598

68. 76 . 88 1.22 .16 .89 65K e L636

67. 49 -.38 -.53 . 12 .67 65K o L6 80

67. 87

• 72 PERCENT PERCENT AVERAGE SDR *

TEST DETERMINATIONS - 8 18 LABS IN GRAND MEANS

.18 PERCENT

67.34 -.53 -.74 .07 .42 650 L289

REPORT NO. S8G TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T65-2 TABLE 2 DIFFUSE BLUE REFLECTANCE IN PERCENT (GLOSS TRAP)

TAPPI SUGGESTED METHOD T52S SU-72. BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND 0 DEG.

FEBRUARY 1979

OBSERVATION

)

LAB MEANS CeORD INATES AVG CODE F J36 J79 MAJOR MINOR R. SDR VAR PROPERTY TEST INSTRUMENT- --CONDITIONS

L28 9 83.37 67. 34 -. 94 .75 .49 650 DIFFUSE REFLECTANCE, ELHEPH0, GL. TRAP

,

SPECIFIC CAL I BRAT I AN L680 O 83.70 67. 49 -.67 .52 .92 65K DIFFUSE REFLECTANCE, ELREPHO, GL. T RAP. MGO (ZEISS) BASE L575 o 83.98 67.56 -.48 .30 1.01 65F DIFFUSE REFLECTANCE, ELREPHO, GL. T RAP

,

NPC-PTB ABSOLUTE BASE

L349 o 84.00 67. 17 -. 83 . 1 1 1.54 65 K DIFFUSE REFLECTANCE, ELREPHO. GL. TRAP , MG0 ( ZEISS ) BASE

L 1 7 0 0 84. CO 67.60 -.44 .29 • 66 65 B DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP

,

NBS ABSOLUTE BASE

L44 6 0 84.09 67. 38 -.60 .12 1.07 65F DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP

,

NHC-PTB ABSOLUTE BASE

LI 50 0 84.15 67.01 -.91 -.09 .79 65Q DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP, ZEISS ABSOLUTE BASE

L59 8 o 84.25 69.21 1.12 .75 .57 65K DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP

,

MGO ( ZEISS ) BASE

L280 0 84.29 67.72 -.21 .09 1.19 65Q DIFFUSE REFLECTANCE, ELREPHO, GL.TRAP, ZEISS ABSOLUTE BASE

L242 0 84.30 66. 75 -1. 08 -.34 1.41 65F DIFFUSE REFLECTANCE, ELREPHO, GL® TRAP , NRC-PTB ABSOLUTE BASE

L25 0T 0 64.36 67.66 -.23 -.00 1.23 65F DIFFUSE REFLECTANCE, ELREPHO. GL. TRAP

,

NRC-PTB ABSOLUTE BASE

LI 36 0 84.53 67.65 -.17 -.17 1.40 65F DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP

,

NRC-PTB ABSOLUTE BASE

LI 2 1 o e4.58 68. 74 .84 .25 .81 65k DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP, MGO (ZEISS) BASE

LI 0 0 0 84.62 67. 47 -.29 -.32 1.01 65F DIFFUSE REFLECTANCE, ELREPHO, GL. TRAP, NRC-PTB ABSOLUTE BASE

L236 0 84.82 67.94 .22 -.31 .72 65F DIFFUSE REFLECTANCE, ELREPHO, GL.TRAP. NRC-PTB ABSOLUTE BASE

L636 0 84.83 68. 76 .96 .03 .76 65K DIFFUSE REFLECTANCE, ELREPHO. CL. TRAP, MGO (ZEISS) BASE

L21 OK 0 85.05 69. 28 1. 53 .06 .87 65K DIFFUSE REFLECTANCE, ELREPHO, GL.TRAP, MGO (ZEISS) BASE

L325 0 85.08 67.98 . 36 -.52 1.26 65F DIFFUSE REFLECTANCE, ELREPHO, GL.TRAP, NRC-PTB ABSOLUTE BASE

L573 0 85.53 68.33 .87 -.78 .78 65F DIFFUSE REFLECTANCE, ELREPHO. GL.TRAP, NRC-PTB ABSOLUTE BASE

GMEANS

:

84.45 67.87 1.00 95% ELLIPSE: 2. 16 1.03 WITH GAMMA - 64 DEGREES

35
PERCENT

BLUE REFLECTANCE, DIFFUSE, WITH TRAP

SAMPLE J36 = 84.5 PERCENT

i i i i SAMPLE J79 = 67.9 PERCENT

J I I L

O

r-~

o

cnCD

o

oo

CD

m + .X.* N0T IN GRAND MEANS

OANALYSIS T65-2

LlJ

I Q_

21

CL

CQ O

O

O O

O

O O

rCD

CD

CD

Q

O &

O o

+ o

o

o

o

o

SAMPLE J36

82.0 83.0 84 .0

PERCENT

85.0 86 .0 87-0

36
REPORT NO. 58G TAPP I C6 LLAB6RAT I VE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T65-3 TABLE 1 DIFFUSE BLUE REFLECTANCE IN PERCENT ( NO GLOSS TRAP ) TAPPI SUGGESTED METHOD T525 SU-72, BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND 0 DEG. OBSERVATION)

SAMPLE PRINTING SAMPLE PRINTING TEST D. -1 8 LAB J 36 94 G5AMS PER SQUARE METER J79 73 GRAMS PER SQUARE METER CODE MEAN DEV N • DEV SDR R. SDR MEAN DEV N .DEV SDR R. SDR VAR F LAB

LI 52 83.40 -.65 1.06 .05 .65 68.23 -.24 -.37 .09 • 66 65E 0 LI 52

Li 57 84.4 1 .36 .60 .05 .63 68. 82 .35 .53 . 13 • 93 6 5E 0 LI 57

Li 6 1 e3.92 -• 13 -•21 .05 • 64 68. 97 • 50 .76 .08 .61 65E 0 Li 6

1

L173A 83.76 -.28 -.47 .10 1 • 20 68.44 -.03 -. 04 .11 • 77 65E 0 L 1 73A

LI 94 85.34 1.30 2. 13 .08 • 92 73.30 4.83 7.42 .10 • 75 65E * LI 94 L219 84.20 • 15 • 25 .11 1 • 30 68.68 • 21 .32 .22 1*61 65E 0 L219 L238A 84.25 • 20 .33 .05 .65 69.09 .62 .95 .08 .55 65E 0 L238A

L241 83. 12 -.92 1.51 .14 1.68 66.75 -1.72 2.64 .20 1.44 65E 0 L24 1 L24 4 84.65 • 61 1.00 .09 1« 10 68. 16 -.31 -.48 .20 1.45 65D 0 L244

L251 83.79 -•26 -.43 .15 1. 83 68.32 -.15 -.23 .05 .33 65E 0 L25

1

L255 85.25 1.21 1.98 .08 • 92 69.44 • 97 1. 50 .13 .97 65D 0 L255

L3C5 80.70 -3.34 5.49 .17 2. 10 67. 83 -•64 -.99 .09 .68 65D * L3 05 L309 84.71 .66 1.09 .09 1. 12 68. 09 -.38 -.58 .30 2. 14 65J 0 L309

L36 0 83.79 -.26 -.43 .05 .63 68.42 -.05 -.08 .14 1.00 6 5E 0 L360

L384 80. 10 -3.95 6.48 .12 1. 45 67.32 -1.15 1.76 .09 .64 65S ft L384 L565 83.35 -.70 1.14 .05 .65 68.70 • 23 .35 o CO • .55 65W 0 L565

GR. MEAN - 84.05 PERCENT GRAND MEAN - 68.47 PERCENT TEST DETERMINATIONS - 8 SD MEANS - .61 PERCENI SD OF MEANS - .65 PERCENT 13 LABS IN GRAND MEANS AVERAGE SDR - o CD • PERCENT AVERAGE SDR - .14 PERCENT

TOTAL NUMBER OF LABORATORIES REPORTING - 16

Best values: J36 84.0 +1.2 percent

J79 68.5 +1.1 percent

The following laboratories were omitted from the grand means because of extreme test results: 194,

305, 384.

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T65-3 TABLE 2 DIFFUSE BLUE REFLECTANCE IN PERCENT (NO GLOSS TRAP)

TAPPI SUGGESTED NETBOD T52S SU-72. BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND O DEG. OBSERVATION)

LAB MEANS COORDINATES AVG C0DE F J36 J79 MAJOR MI NCR ft* SDR VAR PROPERTY TEST INSTRUMENT- CONDITIONS

L3 84 * 80.10 67. 32 -3. 47 2.20 1.05 65 S DIFFUSE REFLECTANCE, ELBEPH0, N0 TRAP, ABSOLUTE-UNKNOWN

L305 ft 80,70 67. 83 -2.69 2.08 1.39 65D DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, N3C-• PTB ABSOLUTE

L24 1 0 83,12 66.75 -1.90 -.45 1.56 65E DIFFUSE REFLECTANCE, ELREPH0

,

N0 TRAP, MG0 ( ZEISS ) BASE

L565 0 83.35 68. 70 -.29 .67 .60 65 W DIFFUSE REFLECTANCE, ELREPH0

,

N0 TRAP. NBS MGO BASE

LI 52 0 83.40 68. 23 -.61 .33 .65 65E DIFFUSE REFLECTANCE. ELREPH0

,

N0 TRAP, MGO ( ZEISS ) BASE L173A 0 83.76 68. 44 -.21 .20 • 99 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP. MGO ( ZEISS ) BASE

L36 0 0 83,79 68.42 -.21 . 16 .82 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO ( ZEISS ) BASE

L251 0 83.79 68.32 -.29 .09 1,08 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO ( ZEISS ) BASE

L16 1 0 83,92 68.97 .29 .43 • 63 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO ( ZEISS ) BASE

L2 19 0 84.20 68.68 .26 .03 1.45 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO ( ZEISS ) BASE L238A 0 84.25 69.09 .60 .26 • 60 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO ( ZEISS

)

BASE

LI 57 0 84.41 68. 82 .50 -.04 • 78 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO ( ZEISS

)

BASE

L244 0 64.65 68. 16 . 17 -.66 1,27 65D DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, NRC- PTB ABSOLUTE

13 09 0 84,71 68.09 . 16 -.75 1,63 65 J DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP. NBS ABSOLUTE

L255 0 85.25 69.44 1.53 -.26 • 94 65D DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP. NRC- PTB ABSOLUTE

L194 * 85,34 73. 30 4.46 2.23 • 83 65E DIFFUSE REFLECTANCE. ELREPH0, N0 TRAP, MG0 ( ZEISS ) BASE GMEANS

:

84.05 68.47 1,00 95* ELLIPSE: 2.31 1.25 WITH GAMMA - 48 DEGREES

37
PERCENT

BLUE REFLECT RNCE , DIFFUSE, N0 TRAP

SAMPLE J36 — 84.0 PERCENT

i —

j

i L

LDOO

LQCD

CD

LD

0

O

CD

SAMPLE J79

i m + . X , » NOT IN GRAND MEANS

[-" ANALYSIS T65-3

LJ

_J

CL. CE

CQ

O

O

o

68.5

i PERCENT

O

O

O

©

LD

l>

CD

LD

LD

CD

©

©,©

©

SAMPLE J36

82.0 83.0 84.0

PERCENT

85.0 ' 86.0

38
REPORT NO. 58G TAPPI Cfl LLAB9RAT I VE REFERENCE PROGRAM

ANALYSIS T75-1 TABLE 1 SPECULAR GLOSS AT 75 DEGREES, IN GLOSS UNITS

TAPPI STANDARD 1480 OS-78, SPECULAR GLOSS OF PAPER AND PAPERBOARD AT 75 DEGREES

FEBRUARY 1979

SAMPLE COATED OFFSET SAMPLE COATED BOOK TEST D. . 10 LAB E6 7 117 GRAMS PER SQUARE METER E51 118 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDK MEAN DEV N.DEV SDR R. SDR VAR F LAB

LI 0 8 68.0 -.3 -.20 2.4 1. 25 69.3 1.2 .75 .6 .56 75H 0 L 1 08

Li 2 1 69.8 1.5 .86 2.9 1.50 70.0 1.9 1. 20 1.3 1. 17 75H 0 Li 2 1 LI 22 68.5 . 1 .08 2.7 1.40 67.3 -.8 -.54 .8 .74 75H 0 L 1 22

LI 2

8

66. 8 -1.5 -.89 2.5 1. 29 68.7 .6 . 38 .9 .87 75G 6 L 1 28

LI 34 69 ,2 .9 .51 2.0 1.06 69.5 1.4 . 89 1.3 1. 16 75H 0 LI 34

Li 36 70.5 2.2 1.27 1. 7 . 86 71.2 3. 1 1.99 .6 .58 7 5G 0 L 1 3b

LI 49 61.9 -6. 4 -3.76 2.2 1.13 62.9 -5.2 -3.33 1.2 1.09 75G U LI 49 L153 70.4 2. 1 1.21 2.0 i .04 70.7 2.6 1.65 .7 .62 75G 0 L 1 53

LI 62 73.0 4.7 2.74 2.1 i . 09 72.4 4.3 2.74 1.0 .92 7 5G * L 1 62

LI 7 3

A

64. 8 -3.5 -2. 06 2.7 1.40 65.6 -2.5 -1.60 1.3 1.23 75G 0 L173A

LI 82 69. i . e .47 1.8 .95 67.7 -.4 -.26 1.0 .96 7 5E 0 L 1 82

Li 89 68.2 -. i -.05 .9 .46 65. 1 -3.0 - 1.92 1.7 1.55 75P 0 LI 89

LI 9 0C 65.4 -2.9 -1.71 1.9 .98 66.6 -1.5 -.97 1.7 1.56 7 5G 0 L190C

LI90R 67.3 -1. 1 -.62 1.8 • 95 66. 1 -.0 -. 03 1.5 1.37 75G 0 L190R L206 68.6 .3 .16 1.4 • 73 67.7 -.5 -.29 1.3 1.14 75H 0 L2 06

L21 0 72. 2 3.9 2.26 1.6 .84 69.4 1.3 . 83 1.4 1.31 75H 0 L2 10 L21 1 69.5 1.2 .71 1.2 .63 68.8 .7 .43 .9 .79 75H 0 L2 1 1 L212 71.6 3.3 1.91 2.3 1.20 69.4 1.3 .82 1.0 .88 75P 0 L212 L2I3 68.5 .2 .11 1.6 • 82 67. 1 -1.0 -.61 . 8 .70 75H 0 L213

L223 68.7 .4 .22 1.5 • 79 68.0 -. 1 -.08 .9 .84 75H 0 L223

L230 68.6 .3 . 16 1.3 .66 66.7 -1.4 -.90 .9 .87 75H 0 L230 L243 69.8 1.5 . 86 1.9 • 97 69.3 1.2 .76 1. 1 .97 75B 0 L243

L2S 1 69.4 1.1 .63 1.8 • 9 i 67.4 -. 7 -.42 1. 1 1.04 75G 0 L251 L25 5 67. 8 -. 5 -.31 1.2 .64 69.5 1.4 .89 .8 .78 75G 0 L2 55 L256 69.2 .9 .52 1.7 .90 68.0 -. 1 -.05 1.0 .92 75H 0 L256 L259 67.7 -.6 -.37 2.8 i.47 68.8 .7 .44 1.6 1.48 75H 0 L259

L26 2 68.9 .6 .33 2.5 1. 29 70.8 2.7 1.75 .9 .83 75K 0 L262

L278 62.9 -5.4 -3.18 2.8 1. 45 61.8 -6.3 -4.00 1.7 1.55 75G # L278

L29 1 66.6 -1.7 -1.02 3. 1 1. 59 67. 1 -1.0 -.62 2.0 1.85 75K 0 L29 1 L30 1 67.4 -1.0 -.57 2.4 1.27 68.5 .3 .22 .9 ,79 75H 0 L301

L31 5 67.9 -.4 -.25 2.6 1.35 67. 1 — 1 .

0

-.65 1.0 .91 75G 0 L3 15 L3 i 7 68.2 -. 1 -.09 2.2 1.14 67.9 -.2 -. 14 1. 1 1.02 75B 0 L317

L321 69.4 1. 1 .63 2.0 1. 06 70. 1 2.0 1.30 1. 1 1.01 75G 0 L321 L32 3 66.9 -1.4 -.82 2.7 1. 38 68.5 .4 .27 .7 .67 7 5H 0 L323

L32 8 67.2 -1.1 -.65 1.4 .70 66.2 -1.9 - 1.21 1. 1 1.04 7 5H 0 L3 28

L33 9 65.4 -2.9 -1.71 3.2 1.64 66.6 -1.5 -.97 2.0 1.83 75P 0 L339

L349 65.8 -2.5 -1.46 1.3 .70 67.9 -.2 -. 10 1. 1 .96 75H 0 L349

L372 67.7 -.6 -.34 1.6 • 84 67.2 -. 9 -.58 1. 1 .97 75B 6 L372

L36 8 60.3 -8. 0 -4.70 1.1 . 55 59.9 -8.2 -5.25 1.0 .91 75P tt L388 L396 69.3 1.0 .57 1.0 • 51 69.2 1.1 .70 1.0 .89 75G 0 L396 L456 68.7 .3 .19 1.6 • 84 67.3 -.8 -.53 1.0 ,95 75H 0 L456

L483 68.0 -.3 -.20 1.7 . 86 67.9 -.2 -. 15 1.3 1.19 75H 0 L483

L573 65.4 -2.9 -1.71 2.2 1.15 66.4 -1.7 -1.09 1.0 . 88 75G 0 L573

L574 66.9 -1.5 -.85 1.7 . 88 66.7 -1.4 -.88 1.0 .93 75G 0 L574 L583 69.5 1. 1 .66 2.0 1.02 69. 1 1.0 .66 .6 .53 75H 0 L583

L587 69.6 1.3 .74 .8 .44 69.4 1.3 .82 1.0 . 88 75H 0 L5 87 L592 68.6 .3 .18 1. 5 . 76 67. 1 -1.0 -.62 1.4 1.27 75H 0 L592

L59 8 67.8 -.5 -.29 1.2 .62 66.9 -1.2 -.78 1. 1 1.05 75H 0 L598

L643 68.3 -.0 -.03 1.7 .87 65.7 -2.5 - 1.57 .9 .78 75H 0 L643

L66 8 68.4 .0 .02 2.5 1.32 66. 0 -2.2 -1.37 1. 1 1.05 75G 0 L668

L670 65.2 -3. 1 -1.83 2.8 1.43 66.6 -1.5 -.95 .8 .70 75H 0 L670

L688 68.4 .0 .02 1.2 .63 68.7 .6 .40 1. 1 .97 75G 0 L688

GR. MEAN - 68.3 GLOSS UNITS GRAND MEAN - 68. 1 GLOSS UNITS TEST DETERMINATIONS - io SD MEANS • 1,7 GLOSS UNITS SD OF MEANS • 1 .6 GLOSS UNITS 49 LABS IN GRAND MEANS AVERAGE SDR - 1.9 GLOSS UNITS AVERAGE SDR - 1.

1

GL9SS UNITS L250 63.4 -4.9 -2*88 1.3 .70 59.5 -8.6 -5.50 1.2 1.08 75Q L250 L288 68.0 -.3 -.20 2.8 1.44 68.7 • 6 .41 .8 .71 7 51 L288

TOTAL NUMBER OF LABORATORIES REPORTING • Best values: E87 68+3 gloss units

E51 68+2 gloss units

The following laboratories were omitted from the grand means because of extreme test results: 149,

278, 388.

39
REPORT NO® 58

G

TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T75 - 1 TABLE 2 SPECULAR GLOSS AT 75 DEGREES , IN GLOSS UNITS

TAPPI STANDARD T480 OS-78, SPECULAR GLOSS OF PAPER AND PAPERBOARD AT 75 DEGREES

LAB CODE F MEANS

E87 E51 COORDINATES

MAJOR MINOR

AVG

S. SDB VAR PROPERTY TEST INSTRUMENT CONDITIONS

L388 ft 60® 3 59.9 -11.5 -.9 .73 75 P SPECULAR GLOSS (75 DEGREE )

,

PHOT0V0LT

LI 4 9 ft 61,9 62.9 -8.3 .3 1.11 75 G SPECULAR GLOSS ( 75 DE^EE ), GARDNER

L278 ft 62.9 61.8 -8.2 -1. 1 1.50 75 G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L25 0 63. 4 59.5 -9.4 -3.2 .89 75Q SPECULAR GLOSS C 75 PLGREE ), PHOTOVOLT, 20 C, 65* L173A O 64. 8 65.6 -4.3 .4 1.32 75G SPECULAR GLOSS ( 75 DEGREE), GARDNER

L670 o 65.2 66.6 -3.3 .9 1.07 75H SPECULAR GLOSS C 75 DEGREE ), HUNTER L573 0 6 5.4 66.4 -3.3 .6 1.02 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L3 39 0 65.4 66.6 -3.2 .8 1.74 75P SPECULAR GLOSS ( 75 DEGREE ), PHeTOVOLT

L190C 0 6 5.4 66.6 -3.2 .8 1.27 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L349 0 6 5.8 67.9 -2.0 1.5 .83 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L291 0 66. 6 67. 1 -1.9 .4 1.72 75 H SPECULAR GLOSS (75 DEGREE ), HUNTER

LI 28 o 66.8 68.7 -.8 1.5 1.08 75 G SPECULAR GLOSS ( 75 DEGREE), GARDNER

L574 o 66.9 66.7 -2.0 -. 1 .90 75 G SPECULAR GLOSS (75 DEGREE ), GARDNER

L323 0 66.9 68. 5 -.8 1.2 1.02 75 H SPECULAR GLOSS ( 75 DEGREE )

,

HUNTER

L32 8 O 67.2 66.2 -2. 1 -.7 .87 75 H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L190P 0 67.3 68.1 -.8 .7 1.16 75G SPECULAR GLOSS (75 DEGREE ), GARDNER

L301 0 67.4 68. 5 -.5 .9 1.03 75H SPECULAR GLOSS (75 DEGREE ), HUNTER L259 0 67.7 68. 8 -.0 .9 1.47 75B SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L37 2 0 67.7 67. 2 -1.0 -.3 .90 75B SPECULAR GLOSS ( 75 DEGREE ), BAUSCH LOMB

L25 5 0 67. 8 69. 5 .5 1.4 .71 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L59 8 0 67. 8 66.9 -1.2 -.6 .83 75 H SPECULAR GLOSS (75 DEGREE ), HUNTER

L31 5 0 67.9 67. 1 -1.0 -.5 1.13 75 G SPECULAR GLOSS ( 75 DEGREE ), GARDNER L483 0 68. 0 67.9 -.4 . 1 1.03 75 H SPECULAR GLOSS (75 DEGREE ), HUNTER

L28 8 68.0 68. 7 .2 .7 1.07 751 SPECULAR GLOSS ( 75 DEGREE ), HUNTER, 20 C, 65* RH

LI 08 0 68.0 69. 3 .5 1.1 .90 75 H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L317 0 68.2 67.9 -.3 -. 1 1.08 75 H SPECULAR GLOSS ( 75 DEGREE ). HUNTER

Li 89 0 68.2 65.1 -2.0 -2.2 1.00 75 P SPECULAR GLOSS ( 75 DEGREE ), PHOTOVOLT

L643 0 68.3 65. 7 -i.7 -1.8 .83 75 H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L68 8 0 68.4 68.7 .4 .4 . 80 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L66 8 6 68. 4 66. 0 -1.4 -1.6 1.18 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L 12 2 0 68.5 67.3 -.4 -.7 1.07 75 H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L213 0 66.5 67. 1 -.5 -.8 ,76 75 H SPECULAR GLOSS ( 75 DEGREE), HUNTER L230 0 68.6 66.7 -.7 -1.2 .76 75 H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L206 0 68.6 67.7 -.1 -.5 .94 75H SPECULAR GLOSS ( 75 DEGREE), HUNTER

L592 0 6e.6 67. 1 -.4 -.9 1.01 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L456 0 68. 7 67.3 -.3 -.8 .89 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L22 3 0 68.7 68.0 ,2 -.3 .82 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

L262 0 68.9 70. 8 2.2 1.7 1.06 75 K SPECULAR GLOSS ( 75 DEGREE ), GAERTNER ( K-C TYPE > LI 82 0 69. 1 67.7 .3 -. 8 .95 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER

LI 34 0 69. 2 69. 5 1.6 .5 1.11 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER L256 0 69. 2 68.0 • 6 -.6 .91 75H SPECULAR GLOSS ( 75 DEGREE ), HUNTER L396 0 69.3 69.2 1.4 .2 .70 75 G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L25 1 0 69. 4 67.4 .4 - 1.2 .98 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L321 0 69. 4 70. 1 2. 1 .8 1.03 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L583 0 69. 5 69. 1 1.5 .0 .77 75H SPECULAR GLOSS ( 75 DEGREE ), PUNTER

L21 1 0 69.5 68.6 1.4 -.3 .71 75 H SPECULAR GLOSS ( 75 DEGREE ), HUNTER L587 0 69.6 69.4 1.8 O 1 .66 75 H SPECULAR GLOSS (75 DEGREE ), HUNTER

LI 2 1 0 69.8 70.0 2.3 .4 1.34 75H SPECULAR GLOSS (75 DEGREE ), HUNTER

L243 0 69.8 69.3 1.9 -. 1 .97 75B SPECULAR GLOSS ( 75 DEGREE ), BAUSCH LOMB

LI 53 0 70.4 70.7 3.3 .6 .83 75G SPECULAR GLOSS (75 DEGREE ), GARDNER

LI 36 0 70.5 71.2 3.7 .9 .72 75 G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

L212 0 71.6 69.4 3.3 - 1.2 1.04 75P SPECULAR GLOSS ( 75 DEGREE ), PHOTOVOLT

L21 0 0 72.2 69. 4 3.8 - 1.6 1.07 75H SPECULAR GLOSS ( 75 DEGREE >, HUNTER

LI 62 o 73.0 72.4 6.3 . 1 1.01 75G SPECULAR GLOSS ( 75 DEGREE ), GARDNER

GMEANS

68.3 68.1 95% ELLIPSE: 5.4 2.4

1.00 WITH GAMMA - 41 DEGREES

40
GL0SS

UNIT

5

SPECULRR GLOSS, 75 DEGREE

SAMPLE E87 = 68-3 GLOSS UNITS SAMPLE E51 = 68.1 GLOSS UNITS

GL0SS UNITS

41
REPORT NO© 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T90-1 TABLE 1 THICKNESS (CALIPER), THOUSANDTHS OF AN INCH TAPPI STANDARD T41 1 OS-76 SAMPLE PRINTING SAMPLE PRINTING TEST D. - 10 LAB J64 85 GFAMS per :SQUARE METER J 83 73 GRAMS PER SQUARE METER

CODE MEAN DEV N.DEV SDR R® SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

LiC 5*409 • 150 1.66 .044 .99 2.806 .08 3 • 83 .028 .71 90V 6 L100

LI 0

5

5*244 -.015 17 .027 .61 2.783 • 045 .55 .050 1.27 9 0Q 6 LI 05

LI 1 a 5*379 .120 1.33 . 033 .74 2. 759 * >'2 1 • 26 .043 1.10 90Q 0 LI 18

LI 22 5*375 • 1 16 1.29 .066 1.48 2.330 * 092 1. 13 .034 .85 90V 0 L 1 22 L123F 5* 356 .097 1.08 .028 .64 2.880 . 142 1.73 .046 1.22 9 OF 0 L123F

LI 25 5* 266 .007 .08 .053 1. 19 2.781 .043 .53 .035 .89 9 OT 0 L 1 25

LI 28 5*292 . 033 .37 . 050 1. 13 2.751 .013 .16 .038 .95 90T 0 LI 26

LI 4 1 5* 199 -.060 -.67 . 057 1.28 2.734 -.004 -.04 .03 8 .97 90T 0 L 1 4 1 LI 53 5.388 . 129 1.43 . 054 1.21 2.937 .199 2.43 .040 1.01 90T * LI 53

L l 58 5*254 -.005 -.06 .046 1.04 5.711 2.973 36.22 .033 .84 9 0T * L 1 58

L 1 59 5*353 .094 1.04 • 049 1.11 2.827 .089 1.09 .041 1.03 9 OT 0 LI 59

LI 62 5* 190 -.069 -.77 .057 1.28 2.490 -.248 -3.02 .032 . 80 90D X L 1 62

LI 66 5.261 .002 .02 . 023 .51 2.817 . 079 .97 .030 .76 90T 0 LI 66 L173B 5.370 • 11 l 1.23 . 067 1.52 2.740 .002 .03 .052 1.31 9 OF 0 L173B

Li 74 5.230 -.029 -.32 .082 1. 85 2.710 -.028 -.34 .074 1.87 90T 0 Li 74

LI 82 5.272 .012 . 14 .058 1.31 2.723 -.015 -.18 .05 1 1.28 90L 0 LI 82

L 1 8 3 5.363 . 104 1.15 .038 . 85 2.760 • 022 • 27 .042 1.07 90T 0 LI 83

LI 9 OC 5* 150 -. 109 -1.21 . 053 1.19 2.680 -.058 -.70 .042 1.07 90T 0 L190C

L2i 2 5.345 . 086 .95 . 044 .98 2.780 . 042 • 52 .026 .65 90T 0 L212

L213 5. 110 -. 149 -1.65 . 032 .71 2. 590 -. 148 -1.80 .032 . 80 90T 0 L2 1 3 L223 5.260 • 001 .01 .030 .67 2.699 -.039 1 9 .028 .72 90V 0 L223 L228 5.245 -.014 -.16 .050 1. 12 2. 765 .027 .33 .063 1.53 90T 0 L228 L233 5.579 .320 3.55 .04 7 1.05 2.753 .015 . 19 .028 .71 90Q X L233 L23 8A 5.320 • 061 .68 .063 1.42 2.710 -.028 -.34 .032 . SO 90T 0 L238A

L24 1 5.315 . 056 .62 .04 1 .93 2.845 . 107 1.31 .064 1.63 90T 0 L241 L249 5.220 -.039 -.43 .046 1.03 2.637 -. 101 -1.23 .059 1. 50 90T 0 L249 L259 10. 121 4. 862 53.94 15.066 338.78 2.734 -.004 -. 04 .022 .55 90T X L259 L260 5. 199 -.060 -.67 • 026 .58 2.643 -.095 -1. IS .031 .77 90T 0 L260

L26I 5.293 • 034 .38 • 046 1. 03 2.690 -.048 -.58 .017 .43 90T 0 L261 L262 5. 195 -.064 -.71 .037 .83 2.670 -.068 -.82 .054 1.36 90T 0 L262

L2 85 5. 193 -.066 -.73 .031 .69 2.798 .060 .74 .023 .57 90T 0 L285

L291 5. 340 . 081 .90 . 039 .89 2.815 .077 .94 .034 .85 9 OT 0 L291 L305 5. 255 -.004 -.04 . 055 1.24 2.765 .027 .33 .041 1.04 9 0T 0 L305

L3 09 5.240 -.019 -.21 . 084 1.90 2.650 -.088 -1.07 . 053 1.33 9 OT 0 L309

L31 8 5. 10 0 -. 159 -1.76 .053 1.19 2.590 -.148 -1.80 .032 . 80 9 OT 0 L318 L320 5. 1 10 -. 149 -1.65 • 032 .71 2.585 -. 153 -1. 86 . 034 • as 90T 0 L320

L323 5.037 -.222 -2.46 . 043 .97 2. 549 -. 189 -2.30 .021 .53 90T 0 L323

L324; 5.206 -.053 -.59 • 020 .44 2.712 -. 026 -.31 • Oil .29 90T 0 L324

L32 6 5.315 . 056 .62 • 034 .76 2.745 .007 .09 . 037 .93 90T 0 L326

L32 8 5.210 -.049 -.54 . 056 1.25 2.724 -.014 -. 17 .027 .68 90T 0 L328

L331 5.229 -.030 -.33 . 079 1.78 2.8 13 .075 .92 .027 .68 90T 0 L331 L339 5. 195 -.064 -.71 .055 1.24 2.755 .017 .21 .037 .93 90T 0 L339 L352 5.267 .ooe .09 .032 .73 2.761 .023 .28 .019 .47 90Q 0 L3 52 L3 56 5.202 -.057 -.63 .038 . 85 2.700 -.038 -.46 .028 .71 90T 0 L356

L35 8 5. 160 -.099 -1.10 .066 1.48 2.661 -.077 -.93 .039 .98 90T 0 L358 L376 5.340 .08 1 .90 .052 1. 16 2.815 .077 .94 .04 1 1.04 90T 0 L376 L380 5.200 -. 059 -.65 .000 .00 2.800 .062 .76 .000 .00 90T 0 L360 L382 5.310 .05 1 .57 .032 .71 2.710 -.028 -.34 • 152 3. 86 90T e L3 82 L390 5.452 • 193 2.14 . 043 .98 2.880 • 142 1.73 .039 .98 90T 0 L390

L44 2 5.399 . 140 1.55 . 044 .99 2.879 • 141 1.72 .029 .74 90V 0 L442 L556 5. 262 .003 .03 .034 .77 2.690 -.048 -.58 .047 1.18 90T 0 L556 L557 5. 170 -.089 -.99 .067 1.52 2.660 -.078 -.95 .084 2. 13 90T 0 L557

L574 5.095 -. 164 -1.82 .045 1.02 2.663 -.075 -.91 .034 . 86 90V 0 L574 L575 5.216 -.04 3 -.48 . 048 1.07 2.7 14 -.024 -.29 .025 .62 90T 0 L575

L58 1 5.380 • 121 1.34 .026 .58 2.830 .092 1.13 .026 .65 90T 0 L581 L585 5.3C0 .04 1 .45 .000 .00 2.710 -.028 -.34 .032 . 80 90T 0 L585 L587 5.220 -.039 -.43 .04 2 .95 2.680 -.058 -.70 .063 1.60 90T 0 L5 87 L626 4.940 -.319 -3.54 .076 1.72 2.377 -.361 -4.39 .027 .69 90T # L626

L679 5. 175 -.084 -.93 .054 1.21 2.630 -. 108 - 1.31 .026 .65 90T O L679 L693 5.258 -.001 -.01 .056 1.26 2.738 .OOC .00 .025 .63 90T 0 L693

GR. MEAN - 5.259 MILS GRAND MEAN - 2.738 MILS TEST DETERMINATIONS - 10 SD MEANS - .090 MILS SD 0E MEANS .082 MILS 55 LABS IN GRAND MEANS AVERAGE SDR • . 044 MILS AVERAGE SDR - .040 MILS

GR. MEAN -133.56 MICROMETER GRAND MEAN - 69.54 MICROMETER

42
REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T90-1 TABLE 1 THICKNESS (CALIPER). THOUSANDTHS OF AN INCH TAPPI STANDARD T41 1 OS-76

LAB SAMPLE

J64 PRINTINGSS GRAMS PER SQUARE METER SAMPLEJ83 PRINTING73 GRAMS PER SQUARE METER TEST D. 10 CODE MEAN DEV N, DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

L 1 06 5,090 169 -1,87 ,057 1.28 2,860 • 122 1.49 .070 1.77 90C L 1 06

LI 85 5, 190 — , 06 9 -.77 • 025 .57 2.698 -.040 -.48 .020 .50 90B LI 85 L24 20 5,303 ,04 4 • 49 ,020 .46 2.742 ,005 .06 .028 .70 906 L2426

L242P 5, 406 , 147 1 ,63 ,041 .92 2,625 .087 1.06 .027 .67 90P . L242P

L243 5, 162 -,097 -1,08 ,026 . 58 2.672 -.066 -. 80 .029 .72 90S L243

L25I 5,236 -,023 -.25 ,034 .78 2.726 -.01 1 -. 14 .03 1 .79 9Oft . L251 L34 4 5,280 ,021 .23 .063 1.42 2.690 -.048 -.58 .032 .80 90U L344

L396M 51,200 45,941 509,63 ,789 17. 74 26.400 23.662 26 8. 24 .516 13.07 90S . L396M

L563 5,340 , 081 • 90 ,052 1.16 2.820 .082 1.00 .063 1.60 90U L563

L567 5, 266 ,007 ,08 .047 1. 06 2.674 -.064 -.77 .052 1.32 90B . L567

L57 6 5, 135 -.124 -1,38 , 048 1.08 2,662 -.076 -.92 .043 1.09 90C • L576 L616 5,336 ,077 ,85 , 039 .87 2,832 .094 1. 15 .041 1 .05 50C L616

L684 5, 211 -,048 -,53 ,020 .44 2.830 . 092 1.13 .036 .90 90U L6 84 TOTAL NUMBER OF LABORATORIES REPORTING * 73

Best values: J64 5.26 + 0.14 mils

J83 2.74 + 0.13 mils

The following laboratories were omitted from the grand means because of extreme test results: 158

626.
REPORT *16. 58G TAPPI C0LLAB0RATI VE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T90-1 TABLE 2 TBICKNESS (CALIPER), THOUSANDTHS OF AN INCH TAPPI STANDARD T41 1 OS-76

LAB MEANS COORDINATES AVG

CODE F J64 J83 MAJOR MINOR R, SDR WAR PROPERTY TEST INSTRUMENT- —CONDITIONS

L626 # 4.940 2.377 -.478 -.058 1.20 90T THICKNESS ( CALIPER), TMI, M0T6R DRIVEN L323 e 5.037 2.549 -.29 1 .006 .75 90T THICKNESS ( CALIPER). TVI M0T0R DRIVEN

Li 06 5.090 2.860 -.045 .204 1.52 90C THICKNESS ( CALIBER), CADY, HAND DRIVEN

0 5.095 2.663 -.172 .053 .94 90V THICKNESS ( CAT IPEP , TMI, M0T0R DRIVEN. DIGITIZED

L31 8 e 5. 100 2.590 -.217 -.005 .99 9CT THICKNESS ( CAI TPER )

,

TMI, M0T0R DRIVEN

L3 20 e 5. 110 2. 585 -.213 -.015 .78 90T THICKNESS .ALIPER )

,

TMI, M0T0R DRIVEN

L213 0 5. 110 2.590 -.209 -.01 1 .76 90T THICKNESS ( CALIPER), TMI, M0T0R DRIVEN

L576 5. 135 2.662 -.143 .026 1.08 90C THICKNESS ( CALIPER ), CADY, HAND DRIVEN

LI 9 OC o 5. 150 2.680 -.120 .029 1.13 90T THICKNESS ( CALIPER ), TMI, M0T0S DRIVEN

L358 e 5. 16 0 2.661 -.125 .008 1.23 90T THICKNESS ( CALIPER ), TMI, M0T0R DRIVEN

L24 2 5. 162 2.672 -.1 16 .015 .65 90S THICKNESS ( CALIPER ), SCH0PPER , HAND DRIVEN

L55 7 e 5. 170 2.660 -.1 18 .001 1. 83 90T THICKNESS ( CALIPER), TMI, M0T0R DRIVEN

L679 0 5. 175 2. 630 -.134 -.025 .93 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

Li 85 5. 190 2.698 -.078 .016 .54 90B THICKNESS < CALIPER), AMTH0F, HAND DRIVEN

L162 X 5. 190 2.490 -.216 -. 139 1.04 90D THICKNESS ( CALIPER ), CADY, MOTOR DRIVEN L285 o 5. 193 2.798 -.009 .089 .63 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L339 0 5. 195 2. 755 -.036 . 055 1.09 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L262 0 5. 195 2. 67

C

-.093 -.008 1. 09 90T THICKNESS ( CALIPER ), TMI, M0T0E DRI VEN

LI 4 1 0 5.199 2.734 -.0 47 .037 1.13 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L260 0 5. 199 2.643 -.106 -.03 1 .68 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN L380 0 5. 20 0 2. 800 -.003 .086 .00 90T THICKNESS ( CALIPER), TMI. MOTOR DRIVEN

L356 0 5.20 2 2.700 -.067 .010 .78 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L324 0 5.206 2.712 -.057 • 016 . 36 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L32 8 0 5.210 2.724 -.046 .022 .96 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L684 5.211 2. 830 .025 . 101 .67 90U THICKNESS ( CALIPER), TMI, HAND DRIVEN

L575 0 5.216 2.714 -.048 • Oil .85 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L24 9 0 5.220 2.637 -.096 -.049 1.27 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L587 0 5.220 2.680 -.067 -.017 1.27 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L33 1 0 5.229 2.813 .028 .076 1.23 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 7 4 0 5.23 0 2.710 -.040 -.C01 1.86 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L251 5.236 2.726 -.024 .00 7 .78 90 W THICKNESS ( CALIPER ), L W, MOTOR DRIVEN, 20 C, 65% RH

13 09 0 5.240 2.650 -.072 -. 053 1.62 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 05 0 5.244 2.783 .019 • 044 .94 90Q THICKNESS ( CALIPER ), EMVEC0, MOTOR DRIVEN L228 0 5. 245 2.765 .008 . 030 1.35 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 58 0 5.254 5. 7 11 1 .970 2.227 .94 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

13 05 0 5. 255 2.765 .015 .023 1. 14 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L693 0 5.258 2.738 -.000 .001 .95 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L223 0 5. 26 0 2.699 -.025 -.030 .70 90V THICKNESS ( CALIPER ), TMI, MOTOR DRI VEN, DIGITIZED

Li 66 0 5.261 2.817 .054 . 058 .64 901 THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L556 0 5.262 2.690 -.029 -.038 .98 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L56 7 5.266 2.674 -.037 -.052 1.19 90B THICKNESS ( CALIPER ), AMTH0R, HAND DRIVEN

L i 25 0 5.266 2.781 .034 .028 1.04 90T THICKNESS ( CALIPER )

,

TMI, MOTOR DRIVEN

L352 0 5.267 2.761 .022 • 012 .60 90Q THICKNESS ( CALIPER ), EMVEC0, MOTOR DRIVEN

LI 82 0 5.272 2.723 -.000 -.020 1.30 90L THICKNESS ( CALIPER ), L W, MOTOR DRIVEN

L344 5.280 2.690 -.0 16 -.050 1.11 90 U THICKNESS ( CALIPER ), TMI, HAND DRIVEN

Li 28 0 5.292 2.751 .034 -.012 1.04 90T THICKNESS ( CALIPER), TMI. MOTOR DRIVEN

L26 1 0 5.293 2.690 -.006 -.058 .73 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L585 0 5.300 2.710 .0 1

2

-.048 .40 90T THICKNESS ( CALIPER )

,

TMI. MOTOR DRIVEN

L 24 20 5.303 2.742 .036 -.026 .58 900 THICKNESS ( CALIPER )» MESSMER, MOTOR DRIVEN, BS3983

L382 0 5.310 2.710 .020 -.055 2.28 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L326 0 5.315 2.745 .047 -.032 .85 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L24 1 0 5.315 2.845 • 1 13 • 043 1.28 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN L238A 0 5.320 2.710 .027 -.06 1 1.11 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L616 5.336 2. 832 • 120 .019 .96 90C THICKNESS ( CALIPER ), CADY, HAND DRIVEN

L563 5.340 2.820 .1 15 • 008 1.38 90U THICKNESS ( CALIPER ), TMI, HAND DRIVEN

L29 1 0 5.340 2.815 .112 .004 .87 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L37 6 0 5.340 2.815 • 112 .004 1.10 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN L212 0 5.345 2.780 .092 -•025 .82 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 59 0 5.353 2.827 • 130 .004 1.07 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN L123F 0 5.356 2.880 . 167 • 042 .93 90F THICKNESS ( CALIPER ), FEDERAL. MOTOR DRIVEN

LI 83 0 5.363 2.760 .093 -.052 .96 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L173B 0 5.370 2.740 .085 -.072 1.41 90F THICKNESS ( CALIPER ), FEDERAL, MOTOR DRIVEN

LI 22 0 5.375 2.830 • 148 -.008 1.17 90V THICKNESS (CALIPER), TMI, MOTOR DRIVEN, DIGITIZED

Li 1 8 0 5.379 2.759 • 104 -.064 .92 90Q THICKNESS ( CALIPER ), EMVEC0, MOTOR DRIVEN

L581 0 5. 380 2.830 • 152 -.01 1 .62 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

44
REPORT N0. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T90-1 TABLE 2 TBICKNESS (CALIPER), THOUSANDTHS OF AN INCH

TAPPI STANDARD T411 03-76 LAB CODE F MEANS

J64 J83 COORDINATES

MAJOR MINOR

AVG

R. SDR VAR PROPERTY— -TEST INSTRUMENT- --CONDITIONS

Li 53 « 5.388 2.937 • 229 .063 1.11 90T THICKNESS ( CALIPER), TMI

,

MOTOR DRIVEN

LA 4 2 0 5.399 2.879 • 199 .013 .87 90V THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN, DIGITIZED

L242P 5.406 2.825 • 168 -.032 .79 90P THICKNESS ( CALIPER ), MESSMER, MOTOR DRIVEN, ISO R534

Li 00 6 5.409 2.8 06 • 158 -.048 .85 90V THICKNESS < CALIPER ), TMI, MOTOR DRIVEN, DIGITIZED

L39 0 0 5.452 2. 880 • 239 -.022 .98 90T THICKNESS ( CALIPER ), TMI, MOTOR DRI VBN

L233 X 5.579 2.753 • 250 -.201 .88 90Q THICKNESS ( CALIPER ), EMVEC6, MOTOR DRIVEN

L259 X 10.121 2. 734 3*633 -3.231 169.67 90T THICKNESS ( CALIPER), TMI. MOTOR DRIVEN

L396M 51.200 26.400 50,065- 12. 806 15.40 90S THICKNESS ( CALIPER ), SCHOPPEP , HAND DRIVEN

GMEANS

:

5.259 2.738

95* ELLIPSE: • 293 .101

1.00 WITH GAMMA » 41 DEGREES

45
MICROMETER

THICKNESS (CALIPER)

CO

r^-

co _ o

•*3" rCM

ro

r00

CD

CD

CD

M-CD

CvJ CD

SRMPLE J64 z 5.26 MILS SAMPLE J83 = 2.74 MILS

SAMPLE J64 z 133.6 MICROMETER SAMPLE J83 z 69.5 MICROMETER

126 128 130 132 134 136 138 140 142

MICROMETER

46
REPORT NO* 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T95-1 TABLE 1 GRAMMAGE (MASS PER UNIT AREA)

TAPPI STANDARD T4 1 0 OS-68 SAMPLE BOND SAMPLE MANILA ENVELOPE TEST D. 10 LAB D32 79 GEAMS PER SQUARE METER D33 118 GRAMS PER SQUARE METER

CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

L100 79.30 .02 .04 .31 .89 118. 10 .30 .32 1.52 1.19 95C 6 L100

LI 2 1 79.31 • 03 .05 .48 1.41 1 16.31 -1.49 -1.58 1.21 .95 953 O LI 2

1

LI 62 79.00 -.28 -.50 .00 . 00 116.59 -1.21 - 1. 28 1.77 1.38 95K 0 L 1 62 L213 80.20 • 92 1.65 .44 1. 27 118.28 .48 .51 1.65 1.29 95F 0 L213

L23 3 30.43 l •*> ID .

CL • 87.72 .19 .57 45.35 -72.46 - 76.70 • 45 .35 95T G L233 L249 79.46 . 1 8 .32 .30 .87 1 18. 80 1.00 1.06 1.19 .92 951 0 L249

L28 0 79.14 -. 14 -.25 .46 1. 33 117.97 .17 .18 1.51 1.18 95T 0 L280 L305 78.40 -.88 -1.58 .28 .82 116.30 -1.50 - 1.59 • 69 .69 95T 6 L305 L339 78.51 -.77 -1.38 .19 .54 117.37 -.43 -.46 • 69 .54 95T 0 L339

L342 80.39 1.1 1 2.00 .34 1. 00 118.35 .55 .58 1*78 1.39 95C 0 L342

L34 4 79.89 .61 1.09 .33 .97 118.41 .61 .64 • 21 . 16 95T 6 L344 L442 79. 16 -.12 -.22 .16 .48 117.71 -.09 -.10 .65 .50 95K 0 L4 42 L557 78.91 -.37 -.66 .59 1.71 116.53 -1.27 -1.34 1.72 1.34 95C O L557

L55 9 79. 43 .15 .26 .44 1.27 118. 15 .35 .37 1.89 1.47 95K 0 L559

L56 7 79.59 .31 .56 .43 1.26 118.26 .46 .46 1.67 1.30 95E 0 L567

L574 78.75 -.53 -.95 .37 1.08 117. 41 -.39 -.41 1.52 1. 18 95D 0 L574 L59 7 80.26 • 9e 1.76 .76 2.21 123.00 5.20 5.50 3. 16 2.47 95C tt L597 L626 78.65 -.63 -1 . 13 .40 1. 16 1 17. 35 -.45 -.48 1.14 .89 95E 0 L6 26 L68 8 79.09 -.19 -.33 .30 .89 1 18.82 1.02 1.07 1.25 .97 9 5T 0 L688 L693 79.86 .58 1.04 .36 1.04 1 19.72 1.92 2.03 .83 .65 95G 0 L693

GR. MEAN >1 vA •

rv> OD G/SC. METER GRAND MEAN -1 17. 80 G/SQ. METER TEST DETERMINATIONS - 10 SD MEANS . 56 G/SQ. METER SD OF MEANS - .94 G/SQ. METER 18 LABS IN GRAND MEANS AVERAGE SDR - .34 G/SQ. METER AVERAGE SDR - 1.28 G/SQ. METER TOTAL NUMBER OF LABORATORIES REPORTING 20

Best values: D32 79.2 + 0.9 grams per square meter

D33 117.8 + 1.5 grams per square meter

The following laboratories were omitted from the grand means because of extreme test results: 597.

Data from the following laboratories apppear to be

off by a multiplicative factor: 233.

REPORT NO. 58G TAPPI COLLABORATIVE REFERENCE PROGRAM FEBRUARY 1979 ANALYSIS T95-1 TABLE 2 GRAMMAGE (MASS PER UNII AREA)

TAPPI STANDARD T4 1 0 OS-68 LAB MEANS COORDINATES AVG C0DE F D32 D33 MAJOR MINOR Be SDR VAR PROPERTY •TEST INSTRUMENT—-CONDITIONS

L233 ft 30.43 45.35 -86. 14 14.69 • 46 95T BASIS WEIGHT ( GRAMMAGE )

,

TEMPLATE CUT

L3 05 0 78.40 1 16.30 -1.73 .16 .76 95T BASIS WEIGHT ( GRAMMAGE ). TEMPLATE CUT

L339 0 78.51 117. 37 -.71 .52 • 54 95T BASIS WEIGHT ( GRAMMAGE ). TEMPLATE CUT

L62 6 0 78.65 117. 35 -.67 .39 1.02 95E BASIS WEIGHT ( GRAMMAGE ). GUILLOTINE TYPE CUTTER

L57 4 0 78.75 117. 41 -.58 .32 1. 13 95D BASIS WEIGHT ( GRAMMAGE )

,

DIE CUT

L557 0 78.9 1 116. 53 -1.31 -.19 1« 53 95C BASIS WEIGHT ( GRAMMAGE ) , CUTTING BOARD

LI 6 2 0 79.00 1 16.59 -1.22 -.24 .69 95K BASIS WEIGHT ( GRAMMAGE). WEIGHED AS RECEIVED

L68 8 0 79.0 9 1 18. 82 . 85 .59 • 93 95T BASIS WEIGHT ( GRAMMAGE )

.

TEMPLATE CUT

L28 0 0 79.14 117.97 • 10 .20 1.25 95T BASIS WEIGHT (GRAMMAGE ). TEMPLATE CUT

L44 2 0 79.16 1 17.71 -• 13 .07 • 49 95K BASIS WEIGHT ( GRAMMAGE )

.

WEIGHED AS RECEIVED

L100 0 79.30 118. 10 • 28 .10 1.04 95C BASIS WEIGHT ( GRAMMAGE ) . CUTTING BOARD

LI 2 1 0 79.31 1 16. 31 -1.35 -.64 1.

1

a 95B BASIS WEIGHT ( GRAMMAGE ). C0NC0RA CUTTER

L559 0 79.43 118. 15 .38 .01 1.37 95K BASIS WEIGHT ( GRAMMAGE )

,

WEIGHED AS RECEIVED

L249 0 79.46 1 18. 80 .98 .25 .90 951 BASIS WEIGHT ( GRAMMAGE ) , INGENT0 PAPER CUTTER

L567 0 79.59 118. 26 • 54 -.09 1.28 95E BASIS WEIGHT ( GRAMMAGE ). GUILLOTINE TYPE CUTTER

L69 3 0 79.86 1 19.72 1.99 .26 • 84 95G BASIS WEIGHT ( GRAMMAGE )

,

PRECISION CUTTER

L344 0 79. e9 118. 41 • 80 -.30 • 57 95T BASIS WEIGHT ( GRAMMAGE )

.

TEMPLATE CUT

L2 13 0 80.20 118. 28 .81 -.64 1.28 95F BASIS WEIGHT ( GRAMMAGE ) . FOUR-SQUARE CUTTER

L59 7 tt 80.26 123.00 5. 14 1.25 2.34 95C BASIS WEIGHT ( GRAMMAGE ). CUTTING BOARD

L342 0 80.39 118. 35 • 96 -.79 1.19 95C BASIS WEIGHT ( GRAMMAGE ) . CUTTING BOARD

GMEANS : 79.28 1 17. 80 1.00 95% ELLIPSE: 2. 84 1.11 WITH GAMMA - 65 DEGREES

47
G/SQ.

METER

GRRMMAGE (MASS PER UNIT AREA)

SAMPLE D32 = 79.3 G/SO. METER SAMPLE D33 = 117.8 B/SQ . METER

_l L_ _l L_ _l I I L_

(Tj + . X . » NOT IN GRAND MEANS

CO

<=> ANALYSIS T95-1

LU

_J

Q_

cr

co

o

o

0

0

0

0

0

0 0

0

o

LO0

0 0

,o(

cA

0 0

SAMPLE D32

76.0

T 77'. 0

-1 1 1 1 78.0 79.0 80'.0 ' Sl'.O ' 82.0 83.0

G/SQ. METER

48
REP6RT Nfl. 58G TAPPI CO LLAB8RATI VE REFERENCE PROGRAM FEBRUARY 1979

SUMMARY TABLE

SAMPLE GRAND SD OF AVER REPL LABS LABS REPL TEST METHOD CODE MEAN MEAN SDR CRP INCL PARTIC TAPPI REPEAT REPR0D

AIR RESISTANCE, GURLEY K21 51*2 3.0 4.3 10 55 60 10 3.8 8.3

T40 - 1 OURLEY UNITS K43 16*4 .8 1.2 1.0 2.3

AIR RESISTANCE, SHEFFIELD K21 71*1 5.9 5.9 10 40 45 10 5.2 16.4 T40-2 SHEFF. UNITS K43 167.6 9.2 8.8 7.7 25.5

AIR RESISTANCE, GURLEY BG FLOTATION E68 651. 62. 85, 10 12 12 10 75. 171. T41-1 SEC/ 10 CC E65 731. 63. 148. 129. 173. SMOOTHNESS, PARKER PRINT SURF K45 5.47 .43 .10 10 9 9 10 .09 1. 20 T44-1 MICRONS A83 CD ©

<* .40 .24 .21 1.10 SMOOTHNESS, SHEFFIELD K45 160.3 7.0 9.2 15 89 91 10 8.0 20.0

T45-1 SHEFF* CNITS A83 105.4 6.6 10.7 9.4 19.6 SMOOTHNESS, BEK K K45 30.2 3.9 2.6 15 9 1 1 10 2.3 10.9 T45-2 BEK K SECONDS A83 54.9 7.6 9.2 8. 1 21.5 SMOOTHNES S, BENDTSEN K45 203. 14. 19. 10 8 8 1 0 16. 40. T47-1 ML/M IN A 83 1 13. 13. 18. 16. 36. KAN INK ABSORPTION E48 24.7 3.3 .8 4 8 1 1 4 1.2 9.0

T56-1 KAN UNITS B58 61.4 6.9 .7 1.0 19.2

PH, COLD J78 7.339 .143 .043 5 5 6 2 .083 .402

T57-1 PH UNITS J75 6. 189 .226 .029 o 056 .629

PH, HOT J76 7.914 .208 .035 5 4 4 2 .069 .579 T57-2 PH UNITS J75 5. 841 .395 .035 . 069 1.095 OPACITY, BAL TYPE, 89% BACKING E86 89.75 .54 .35 10 78 89 5 .44 1. 52 T60-1 PERCENT B21 72.36 1.00 1.02 1.26 2. 90 OPACITY, BAL TYPE, PAPER BACKING E86 51 .49 .28 .30 10 6 6 5 .37 .81 T60-2 PERCENT B2 l 75.61 .27 1.10 1.36 1.23 OPACITY, ELFEPBO TYPE, PAPER BACKING E86 92.07 . 19 .19 10 14 16 5 .24 . 56 T60-3 PERCENT B21 77.08 .66 .76 .94 1.94 BLUE REFLECTANCE, DIRECTIONAL J36 83. 93 .60 .12 8 21 46 6 .14 1.66 T65-1 PERCENT J79 68. 14 .35 .22 .24 • 98 BLUE REFLECTANCE, DIFFUSE, WITH TRAP J36 84.45 .47 .08 8 18 19 6 .10 lc 31 765-2 PERCENT J79 67.87 .72 .18 .20 2.00 BLUE REFLECTANCE, DIFFUSE, NO TRAP J36 84. 05 .61 .08 8 13 16 6 .09 1. 69

T6 5-3 PERCENT J79 68. 47 .65 .14 . 16 1. 81 SPECULAR GLOSS, 75 DEGREE E87 68.3 1.7 1.9 10 49 54 5 2.4 5.0

T75-I GLOSS UNITS E5I 68. 1 1.6 1. 1 1.4 4.4 THICKNESS ( CALIPER

)

J64 5.259 .090 .044 10 55 73 10 .039 .250

T9 0-1 MILS J 83 2.738 .082 .040 .035 .227 GRAMMAGE (MASS PER UNIT AREA) D32 79. 28 .56 .34 10 18 20 3 .55 1.61

T9 5 -

1

G/SC. METER D33 1 17. 80 .94 1.28 2.05 3. 13

49
NBS-114A (REV. 9-78)

U.S. DEPT. OF COMM,

BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. TAPPS CUP 58G

3. Recipient* s Accession No,

4. TITLE AND SUBTITLE

Technical Association of the Pulp and Paper Indus ry

Ce^LABQFATI VE HEFERENCE PROGRAM FOR PAPER

Report #58G

5. Publication Date June 8, 1979

7. AUTHOR(S)

R@ G# Powell, J# Hor lick

8. Performing Organ. Report No. NBSIR 79-1374

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, DC 20234

11. Contract/Grant No.

12. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS rsrreer, City, State, zip

)

Collaborative Testing Services, Inc#

9241 Wood Glade Drive, Great Falls, VA 22066

and Technical Association of the Pulp and

Paper Industry

13. Type of Report & Period Covered final

15. SUPPLEMENTARY NOTES

| | Document describes a computer program; SF-185, FIPS Software Summary, is attached.

16. ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a si gni ficant bibliography or

literature survey, mention it here.)

Collaborative Reference

tories with the means fo

uniformity of their test

participating laboratori

grams is the provision o the testing art# This i

averages for each partic

variability, and other i

dards committees#

Programs provide participating laborar checking periodically the level and

ing in comparison with that of other

es# An important by-product of the prof realistic pictures of the state of

s one of the periodic reports showing

ipant, within and between laboratory

nformation for participants and stan17. KEY WORDS (six to twelve entries; alphabetical order; capitalize only the first letter of the first key word unless a proper namis; separated by semicolons)

Collaborative reference program; Laboratory evaluation; Paper;

Precision; Reference samples,/ Testing calibration

18. AVAILABILITY Unlimited

HFor Official Distribution. Do Not Release to NTIS

I ] Order From Sup. of Doc., U.S. Government Printing Office, Washington, DC

20402, SD Stock No. SN003-003-

I | Order From National Technical Information Service (NTIS), Springfield, VA. 22161

19. SECURITY CLASS

(THIS REPORT)

UNCLASSIFIED

20. SECURITY CLASS

(THIS PAGE)

UNCLASSIFIED

21. NO. OF

PRINTED PAGES

56

22. Price

USCOMM-DC