AlllOO TfibE30

COLLABORATIVE REFERENCE PROGRAM

-QC—

100

.U56

79-1801

1979

L..2

TECHNICAL ASSOCIATION OF THE

PULP AND PAPER INDUSTRY

FOR PAPER

REPORT NO. 596

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 S 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

AOS Technology Building

National Bureau of Standards

Washington, DC 20234

Rev. 3/79
TECHNICAL ASSOCIATION OF THE

PULP AND PAPER INDUSTRY

C

^

COLLABORATIVE REFERENCE PROGRAM

FOR PAPER

Report No. 59G

R. G. Powell

TAPPI-NBS Research Associate

Collaborative Testing Services, Inc.

Office of Testing Laboratory Evaluation Technology

Office of Engineering Standards

National Engineering Laboratory

J. Horlick

NBSIR 79-1801 U. S. DEPARTMENT OF COMMERCE

National Bureau of Standards

INTR6DUCTI0N

Reports 59S and 59G comprise the fifth set of reports

for the 78-79 program year* 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*

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

July 27, 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, depending 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, TAPPI 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 In This Report

PAGE

i ii

iv

15

8

1 1 13

1419

2122

23

24

25

30

3133

36

38

40

43

48

50

Introduction

Description of Program

Metric Conversion Table

Key to Tables and Graphs

40*1 Air Resistance, Gurley Oil type

40-

2 Air Resistance, Sheffield type

41-

1 Air Resistance, Gurley Mercury type

44-

1 Smoothness, Parker Printsurf

45-

1 Smoothness, Sheffield type

45-2 Smoothness, Bekk type

47-1 Smoothness, Bendtsen type

56-

1 KAN Ink Absorption

57-

1 pH, Cold Extraction

57-2 pH, Hot Extraction

60-1 Opacity, White (89%) 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

11-1

15-1

17-1

19-

1 20

-

1 20-2

25-

1

26-

1 28-1

29-

1

30-

1 30-2

35-

1

36-

1

49-

1

50-

1 91-1

96-1

Bursting Strength - Up to 45 pel

Bursting Strength - Up to 4S pel, Air Clamps

Bursting Strength - Up to 100 psi

Tearing Strength - Deep Cutout

Tearing Strength - No Cutout

Packaging Papers

Printing Papers,

Printing Papers,

Packaging Papers

Printing Papers

Tensile Breaking Strength

Tensile Breaking Strength

Tensile Breaking Strength

Tensile Energy Absorption

Tensile Energy Absorption

Elongation to Break - Packaging Papers

Elongation to Break - Printing Papers

Folding Endurance, MIT type

Folding Endurance, MIT type, log ( base 10 ) Stiffness, Gurley

Stiffness, Taber

Surface Pick Strength, IGT

Surface Pick Strength, Wax

Concora (Flat Crush)

Ring Crush

CRE

Pendulum

iii
TABLE OF CONVERSION FACTORS TO METRIC (SI) UNITS

Physical

Quantity

To Convert

From To

Multiply

by

Bursting strength psi kPa 6.895

kg/cm2 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/ra .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 mil 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 among

laboratory 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 Lower limit Upper limit

Determinations for R. SDR for R. SDR

3

5

8

10

15

20

25

0.09

0.27

0.40

0.46

0.56

0.61

0.65

2.58

2.06

1.77

1.67

1.53

1.45

1.39

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

Flag, with following meaning:

Excluded from grand means because VAR nonstandard 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)

.

Excluded because data for one sample are missing.

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.

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.

Included in grand mean and inside 95% error

ellipse.

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.
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 ’O'.

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 GRP - 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 NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T40-1 TABLE 1 AIR RESISTANCE. GURLEY UNITS (SECONDS/lOO CC>

TAPPI STANDARD T460 OS-75. AIR RESISTANCE OF PAPER

LAB SAMPLE

K43 PRINTING60 GRAMS PER SQUARE METER

SAMPLE

B95 HEAT SET 0FFSET B00K

91 GRAMS PER SQUARE METER

TEST D# - 10 C0DE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

L100 14.0 -2.3 -2.69 1.2 1.05 38# 9 -9.7 -3.03 2.6 .49 40D * L100

LI 06 20,0 3.7 4.24 6.9 6.23 44. 8 -3.8 -1.18 3.9 .75 40D X L 1 06

LI 07 15.5 -.8 -.97 .8 .77 48# 3 -.3 -.08 2. 1 .39 4 0D 0 LI 07

LI 2 1 16.4 .0 • 04 .8 .72 46® 2 -.3 -.10 4.8 .92 400 0 L 1 2 1 LI 22 16.

8

.5 .56 1.4 1.25 45# 1 -3.4 -1.08 4.9 .93 40 D 0 L 1 22

LI 23 14.

8

-1.5 -1.73 1.0 .95 45# 5 -3.0 -.95 5.7 1. 10 4 OD 0 L 1 23

LI 24

G

15.9 -.4 -.48 .7 .61 44# 9 -3.7 -1. 15 3. 5 .67 40D 0 L124G

LI 25 16.7 .3 .38 .9 .82 49.5 1.0 .31 2. 8 .53 4 OD 0 LI 25

LI 28 17.4 1. 1 1.23 1.3 1.23 49#5 .9 .29 3.2 .61 40D 0 L 1 28

LI 41 17.0 .6 .75 1.1 .96 47.9 -.7 -.21 5.6 1.06 4 OD 0 L 1 4 1

LI 48 17.5 1. 1 1.30 .8 .74 45.6 -3.0 -.94 4.9 .93 40D * L 1 48

LI 53 16.3 -.0 -.04 1.7 1.54 45.5 -3.1 -.96 4.3 .82 40D 0 L 1 53

LI 58 14.3 -2.0 -2.36 .8 .75 45# 1 -3.5 -1. 09 6.3 1.21 4 OD 0 L 1 58

LI 59 17.2 .9 1.00 1.1 1.03 51.0 2.4 .75 6.7 1.28 4 OD 0 LI 59

LI 63 17.0 .7 .80 1.2 1.06 52.5 3.9 1.23 3. 1 .60 40D 0 L 1 63

L166 17.5 1.2 1.35 1.3 1. 19 50.5 1.9 .61 6.0 1. 16 4 OD 0 LI 66

LI 74 16.3 -. 1 -.09 1.0 .87 47.2 -1.4 -.43 8.6 1.64 40D 0 LI 74 L182G 15.8 -.6 -.64 1.0 .91 47.3 -1.3 -.40 5.9 1.12 4 OD 0 L182G

LI 83 17. 1 .7 .84 .

8

.76 48.3 -.3 -. 08 4.7 .90 40D 0 L 1 83 L190C 16.5 .2 .24 1.1 .96 50.6 2.0 .64 4.5 .85 4 OD 6 L190C L212 14.2 -2. 1 -2.43 1.2 1.06 42.3 -6.3 -1.97 4. 8 .91 40D 0 L2 12 L223 16.9 .6 .70 1.1 .99 51.1 2.5 . 80 4.5 .87 40 D 0 L 223

L23 0G 16.4 . 1 .07 .5 .47 49.2 .6 .20 6. 1 1. 16 4 OD 0 L230G

L23 2 16.6 .3 .33 .6 .50 35.6 -13.0 -4. 08 12.5 2.38 4 OD ft L232

L236 16.7 .4 .48 .9 .82 45.3 -3.2 -1.01 4.9 .94 40D 0 L236 L238A 17.0 .7 .83 .9 .83 50.8 2.3 .71 5.4 1.04 40D 0 L238A

L24 1 15.9 -.4 -.50 1.2 1.09 45.5 -3.1 -.96 6. 1 1. 16 4 OD 6 L24 1 L242 16.0 -.3 -.35 .6 .59 49.5 .9 .29 5.7 1.09 40D 0 L242 L243G 16.3 -.0 -.01 .4 .36 46.9 -1.7 -.52 6. 2 1. 19 4 OD 0 L243G L254 16.6 .3 .31 .8 .77 50. I 1. 5 .48 6. 1 1.17 40D 0 L254 L259 15.7 -.6 -.74 1.7 1.51 46.3 -2.3 -.71 4.9 .95 40D 0 L259

L26 1 16.2 -.2 -.18 1.0 .92 50.5 2.0 .62 5.0 .96 40D 0 L26 1 L26 2G 16.6 .3 .31 1.5 1.33 47.1 -1.5 -.46 3.3 .62 40D 0 L262G

L26 5 15.7 -.6 -.72 1.2 1.08 47.0 -1.5 -.48 2.4 .46 40D 0 L265 L278 16.7 .4 .48 1.3 1.22 48.3 -.3 -.09 3.7 .71 40D 0 L278 L285 16.7 .4 .43 .7 .60 50.0 1.4 .44 4.2 . 80 4 0D 0 L285

L301 16.6 .3 .33 1.4 1.26 48.8 .2 . 07 5.6 1.08 40D 0 L3 01 L308 17.0 .6 .73 1.2 1.07 56.4 7.8 2.46 6. 1 1. 17 40D * L308 L320 14.2 -2. 1 -2.47 1.4 1.27 43.2 -5.4 -1.68 5.9 1.13 40D 0 L3 20 L321 16.8 .4 .50 1.5 1.32 50.4 1.8 .58 4.8 .93 4 OD 0 L321 L324 16. 1 -.2 -.27 1.2 1.06 48.4 -.2 -. 06 7.5 1.44 40D 0 L324

L326 17.6 1.3 1.50 .9 .86 52.7 4. 1 1.30 5.5 1.05 40D 0 L326 L328 16.7 .4 .42 1.0 .92 54.0 5.5 1.72 9.7 1.85 40D 0 L328

L339 11.9 -4.4 -5.09 .7 .62 35.5 -13.0 -4. 09 4.2 .81 4 0D ft L339

L344 15.9 -.4 -.50 1.9 1.68 52.6 4.0 1.27 12.3 2.34 40D 0 L344 L376 16.9 .6 .64 1.1 1.01 52.7 4. 1 1.29 3.6 .69 40D 0 L376 L368 17.2 .9 1.00 1.4 1.28 54.7 6. 1 1.92 5.0 .96 40 D 0 L388

L394 16. 1 -.2 -.27 .9 .80 49.4 .8 .26 4.5 . 86 40D 0 L394 L396M 15.6 -.7 -.79 1.2 1.09 46.7 -1.9 -.59 5.0 .96 4 OD 0 L396M

L56 7 16. 2 -.2 -.18 1.1 1.04 45.9 -2.7 -.84 4.2 .81 4 OD 0 L567 L576 15.3 -1.0 -1.18 1.0 .87 47.8 -.8 -. 24 4.3 .82 40D 0 L576

L5 85 17.2 .8 .95 1.2 1.05 52.2 3.7 1.16 7.2 1. 37 4 OD 0 L5 85 L597 17.2 .9 1.00 .9 .83 50.3 1.7 .55 4.7 .89 40D 0 L597 L604 16.0 -.3 -.39 1.5 1.35 47.8 -.8 -.24 5. 8 1. 10 40D 0 L604

L651 15.8 -.5 -.62 1.1 1. 03 48.4 -.2 -. 05 4.2 .80 40D 0 L651 L676 17.6 1.2 1.42 1.1 1.04 51.5 3.0 .94 5.4 1.02 4 OD 0 L676 L697 16.4 .0 .03 1.4 1.23 47.0 -1.6 -.49 5.6 1.07 4 OD 0 L697

GR. MEAN • 16.3 GURLEY UNITS GRAND MEAN • 48.6 CURLEY UNITS TEST' DETERMINATIONS - 10 SD MEANS - .9 GURLEY UNITS SD 6F MEANS • AVERAGE SDR - 1.1 GURLEY UNITS

3.2 GURLEY UNITS AVERAGE SDR • 5.2

54 LABS IN GRAND

GURLEY UNITS MEANS

LI 1 5 15.6 -.7 -.85 1.1 .98 46.9 -1.7 -•52 4.3 .82 40U LI 15 L29I 17.3 1.0 1.12 1.3 TOTAL NUMBER OF LABORATORIES REPORTING • Best values: K43 16.3 + 1.4 Gurley units

B95 48.5 + 5.5 Gurley units

The following laboratories were omitted from the grand means because of extreme test results: 232

1.21 59 44.0

5

-4.6 -1.43 4. 1 .79 40U L291

Data from the following laboratories appear to be

off by a multiplicative factor: 339.
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T40-1 TABLE 2 AIR RESISTANCE, GURLEY UNITS (SECONDS/I 0 0 CC)

TAPPI STANDARD T460 OS-75, AIR RESISTANCE OF PAPER

LAB MEANS COORDINATES AVG CODE F 843 B9S MAJOR MINOR B. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L339 ft 1 1.9 35® 5 - 1 3*6 1.9 .71 40D L100 « 14.0 38® 9 -9.9 .5 .77 40D

L320 a 14.2 43® 2 -5.7 1. 1 1.20 40D L212 a 14.2 42® 3 =6.5 .9 .99 40D

LI 58 a 14.3 45® 1 -3.8 1.3 .98 40D

LI 23 a 14.

S

45® 5 -3.3 .9 1.02 40D

L57 6 0 15.3 47® 8 -.9 .9 .84 40D

LI 07 a 15.5 48® 3 -.4 .8 .58 4 OD

Li I 5 15.6 46® 9 -1.8 .4 .90 40 U L396M a 15.6 46® 7 -2.0 .3 1.03 40D

L259 a 15.7 46 ® 3 -2.3 .2 1.23 40 D L26 5 a 15.7 47® 0 -1.6 .3 .77 40D L182G a 15.

e

47.3 -1.3 .3 1.01 40D

L65I a 15.8 48® 4 -.3 .5 .92 40 D L344 a 15.9 52. 6 3.9 1.2 2.01 40D

L24 1 a 15.9 45.5 -3.1 -.2 1. 12 40D LI24G a 15.9 44.9 -3.7 -.3 .64 40D

L604 a 16.0 47.8 -.8 .2 1.23 40D

L242 a 16.0 49.5 .9 .5 .84 40D

L324 a 16. 1 48.4 -.2 .2 1.25 40D

L394 a 16. 1 49.4 .8 .4 .83 40D

L567 a 16.2 45.9 -2.7 -.4 .92 40D

L26I a 16. 2 50.5 1.9 .5 .94 40D

LI 7 4 a 16. 3 47.2 -1.4 -.2 1.25 40D

LI 53 a 16. 3 45.5 -3.0 -.5 1. 1 8 40D L243G a 16. 3 46.9 -1.6 -.3 .78 40D

Lb 9 7 a 16. 4 47.0 -l.S -.3 1.15 40 D

LI 2

1

a 16.4 48. 2 -.3 -. 1 .82 40D L230G a 16.4 49. 2 .6 . 1 .82 40D LI90C a 16. 5 50.6 2.0 .2 .90 400 L262G a 16.6 47.1 -1.4 -.5 .98 40D L254 a 16.6 50.1 1.6 .0 .97 40D

L232 * 16.6 35.6 -12.7 -2.7 1.44 400

L30 l a 16.6 4 8 ® 8 .3 -.2 1.17 40D

LI 25 a 16.7 49.5 1.0 -. 1 .67 400 L328 a 16.7 54.0 5.4 .7 1.39 400 L285 a 16.7 50.0 l.S -. 1 .70 4 00 L236 a 16.7 45.3 -3.1 -1.0 .88 40D L27 8 a 16.7 48.3 -.2 -.5 .97 400

L321 a 16.8 50.4 1.9 -. 1 1.12 40D

LI 22 a 16.8 45.1 -3.3 -1. 1 1.09 40D

L376 a 16.9 52.7 4.1 .2 .85 400 L223 a 16.9 51 . a 2.6 -. 1 .93 40 D L30 8 « 17.0 56.4 7.8 .9 1.12 40 D LI41 a 17.0 47.9 -.5 -.8 1.01 40 0

LI 63 a 17.0 52. 5 4.0 . 1 .83 4 00

L2 38A a 17.0 50.8 2.4 -.3 .93 40D

Li 83 a 17. 1 48.3 -.1 -.8 .83 400 L585 a 17.2 52.2 3.8 -. 1 1.21 40D

LI 59 a 17.2 51.0 2.5 -.4 1.15 400 L38 8 a 17.2 54.7 6.2 .3 l. 12 400 L597 a 17.2 50.3 1.9 -.5 .86 40D

L291 17.3 44.0 -4.3 -1.8 1.00 40 U

LI 2 8 a 17.4 49.5 1.1 -.9 .92 40 D

LI 4 8 « 17.5 4 5.6 -2.7 -1.7 .84 400

LI 66 a 17.5 50.5 2. 1 -. 8 1.17 40 D L676 a 17.6 51.5 3.2 -.6 1.03 40 D L326 a 17.6 52.7 4.3 -. 5 .95 40D

LI 06 X 20.0 44. 8 -3.0 -4.3 3.49 4 00 GMEANS: 16.3 46.6 1.00 95* ELLIPSE: 8.2 1.6 WITH GAM1

AIR RESISTANCE, GURLEY DENSeMETER - oil FLOTATION

AIR RESISTANCE. GURLEY DENS6METER - oil FLOTATION

AIR RESISTANCE, GURLEY DENSIMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - oil FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - eiL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER . aiL FLOTATION

AIR RESISTANCE, GURLEY DENS6METER -> 0IL FLOTATION

AIR RESISTANCE, GURLBY DENSeMETER - eiL FLOTATION

AIR RESISTANCE, SHEFFIELD IN GURLEY UNITS

AIR RESISTANCE, GURLBY DENS6METEP * oil FLOTATION

AIR RESISTANCE, GURLEY DENS6METER . oil FLOTATION AIR RESISTANCE, GURLEY DENSeMETER - eiL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - oil FLOTATION

AIR RESISTANCE, GURLEY DENS6METER - oil FLOTATION

AIR RESISTANCE, GURLEY 0ENS6METER - oil FLOTATION

AIR RESISTANCE, GURLBY DENS6METER • OIL FLOTATION

AIR RESISTANCE, GURLEY DENS0METER - OIL FLOTATION AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION AIR RESISTANCE, GURLEY DENSeMETER . OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER . OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENS0METER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER “ OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENS6METER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER “ OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER . OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER <- OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENS6METER OIL FLOTATION AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE. SHEFFIELD IN GCRLEY UNITS

AIR RESISTANCE. GURLEY DENS6METER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSOMETER . OIL FLOTATION

AIR RESISTANCE, GURLEY DENSeMETER - OIL FLOTATION

AIR RESISTANCE, GURLEY DENSOMETER - OIL FLOTATION

AIR RESISTANCE. GURLEY DENSOMETER - OIL FLOTATION

- 79 DEGREES

§
GURLEY

UNITS

AIR RESISTANCE, GURLEY

SAMPLE K43 = 16.3 GURLEY UNITS SAMPLE B95 = 48.6 GURLEY UNITS

7
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T40-2 TABLE 1 AIR RESISTANCE, SHEFFIELD UNITS (CC/MIN) FOR 0.442 SO. IN (3/4 IN. DIA > ORIFICE

SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

SAMPLE PBINTING SAMPLE HEAT SET OFFSET BOOK TEST D. - 10 LAB K43 60 GRAMS1 PEE SGUARE METEfi B95 91 GRAMS PER SQUARE METER

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

LI 14 178.6 12.1 1.88 9.4 1.07 77.3 5. 1 1. 18 3.9 .65 40S 6 LI 14

LI 21 171.0 4.5 .70 9.2 1. 05 94.0 21.8 5.07 4.7 .79 40S X L121 L122S 164.8 -1.7 -.26 8.2 .94 79.7 7.5 1.74 5.7 .95 40S 0 L122S

L124S 158.

8

-7.7 -1.20 9.7 1.1 1 70.9 -1.3 -.31 7.7 1.29 4 OS 0 L124S

L132 165.4 -l. 1 -.17 5.2 .59 68.3 -3.9 -.91 7.2 1.21 40S 0 L132

LI 48 171.9 5.4 .84 6.4 .73 77.3 5. 1 1. 18 6.6 1.11 40S 0 L 1 48

LI 50 184.4 17.9 2.78 1 1.0 1. 26 74.3 2. 1 .48 9.3 1.56 40S • LI 50

LI 57 163.0 -3.5 -.54 11.7 1.33 68.0 -4.2 -.98 4.9 .83 40S 0 L157 L158 164.0 -2.5 -.39 7.4 .84 76.0 3.8 .88 3.9 . 66 40S 0 LI 58 L173B 166.5 .0 .00 9. 1 1.04 70.0 -2.2 -.52 8.8 1.48 40S 0 L173B

LI 90C 178,4 11.9 1.85 5.3 .61 81.9 9.7 2.25 6.4 1.07 40S 0 L190C

L213 167.2 .7 .11 9.3 1.06 79.0 6.8 1.58 5.7 .96 40S 0 L213

L223 166.0 -.5 -.08 9.0 1.03 69.6 -2.6 -.61 5.0 .84 40S 0 L223 L228 206.8 40.3 6.27 9.7 1.10 131.2 59.0 13.72 11.8 1.98 4 OS 0 L226 L230S 160.6 -5.9 -.92 7.2 .82 69.0 -3.2 -.75 6.9 1.16 40S 0 L230S

L233 166.2 -.3 -.05 11.9 1.36 73.4 1.2 .27 3.2 .53 40S 0 L233

L241 197.3 30. a 4.79 20.3 2.32 87.5 15.3 3.55 4.3 .73 4 OS 0 L241 L249 166.6 . i .02 12.8 1.46 70.2 -2.0 -.47 7.2 1.21 40S 0 L249 L2S5 183.8 17.3 2.69 6.2 .71 96.5 24.3 5. 65 5.3 .90 40S 0 L255 L257A 162.7 -3. 8 -.59 7.9 .90 73.8 1.6 .37 4.0 .68 409 0 L257A

L257B 162. 1 -4.4 -.68 9.5 1.09 64.7 -7.5 - 1.75 7.5 1.25 40S 0 L257B

L257C 168.9 2.4 .37 5.6 .64 77.7 5.5 1.27 3.9 .65 40S 0 L257C

L26 0 168.8 2.3 .36 3.9 .44 72.7 .5 .11 6.7 1.12 40S 0 L260 L262S 167.8 1.3 .20 5.5 .63 72.2 -.0 -.01 7.4 1.24 4 OS 0 L262S

L28 8 168. 1 1.6 .25 16.5 1.89 73.7 1.5 .34 5.3 .90 40S 0 L288

L301 163.5 -3.0 -.47 7.5 . 86 71.9 -.3 -.08 4.3 .72 40S 0 L301 L305 159.5 -7.0 -1.09 6.4 .73 73.2 1.0 .23 5.7 .95 40S 0 L305

L31 8 157.4 -9. 1 -1.41 5.7 .66 67.4 -4.8 -1.12 5.7 .95 40S 0 L318

L35 2 166. 2 -.3 -.05 5.7 .65 78.4 6.2 1.44 5.2 .87 40S 0 L352

L354 162.5 -4.0 -.62 12.3 1. 40 67. 1 -5. 1 -1.19 5.7 .96 40S 0 L354

L360 162.0 -4.5 -.70 5.4 .61 70.9 -1.3 -.31 4.6 .77 4 OS 0 L360 L372 168.5 2.0 .31 8. 5 .97 72.6 .4 . 09 6.6 1.10 40S 0 L372

L390 20 1.0 34. 5 5.36 13.3 1.52 92.0 19.8 4.6 0 5.9 .99 40S 0 L390

L562 177.6 11. 1 1.73 1 1.2 1.28 69.6 -2.6 -.61 6.3 1.07 40S 0 L562 L575 169.8 3.3 .51 9.2 1.05 71.6 -.6 -. 15 6.2 1.04 40S 0 L575 L585 166.5 .0 .00 9.7 1.11 69.0 -3.2 -.75 6.6 1.11 40S 0 L585 L597 165.0 -1.5 -.23 9.7 1.11 67.2 -5.0 -1.17 8.4 1.42 40S 0 L597

L60 0 165.9 -.6 -.09 6.2 .71 78. 1 5.9 1.37 10.7 1.80 40S 0 L600 L626 151.5 -15.0 •2.33 10.6 1.21 67.5 -4.7 -1.10 4.2 .71 40S 0 L6 26 L684 173. 4 6.9 1.07 1 1.3 1.29 66.6 -5.6 •1.31 5.0 .83 40S 0 L684 L687 171.

8

5.3 .83 10.5 1.20 73.9 1.7 .39 3.6 ,60 40S 0 L687

L69 8 158.3 -8.2 -1.27 13.7 1.56 67.7 -4.5 -1. 05 7.7 1.29 40S 0 L698

OR. MEAN * 166.5 SHEFF. UNITS GRAND MEAN • 72.2 SHEFF. UNITS TEST DETERMINATIONS - 10 SD MEANS - 6.4 SHEFF. UNITS SD 0F MEANS - 4.3 SHEFF. UNITS 37 LABS IN GRAND MEANS

AVERAGE SDR • 8.8 SHEFF. UNITS AVERAGE SDR - 6.0 SHEFF. UNITS L182B 755. 0 580.5 91.48 49. 7 5.68 270.0 197.8 46.02 20.0 3.36 40B L182B

L24 3B 647.9 46U 4 74.83 45.4 5.19 224.9 152.7 35.52 19.6 3.30 40B L243B

L31 2 166.2 -•3 -.05 3.9 .44 79.6 7.4 1.72 2.6 .43 4 0T L312 TOTAL NUMBER OF LABORATORIES EEPORTING - 45

Best values: K43 166 + 12 Sheffield units

B95 72 + 7 Sheffield units

The following laboratories were omitted from the grand means because of extreme test results: 228,

241, 255, 390.

8
REPORT NO. 59

G

TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T40-2 TABLE 2 AIR RESISTANCE. SHEFFIELD ON ITS (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 K43 B95 MAJOR MINOR R. SDR VAR PROPERTY— -TEST INSTRUMENT CONDITIONS

L626 6 151.5 67.5 -15.6 1.5 .96 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETEB OHIFICE

)

L31 8 0 157.4 67.4 -10.3 -.9 .80 40S AIR RESISTANCE, SHEFFIELD < 3/4 INCH DIAMETEH ORIFICE

)

L69 0 0 156. 3 67.7 -9.3 -.9 1.43 40S AIR RESISTANCE, SHEFFIELD < 3/4 INCH DIAMETER ORIFICE

)

L124S 0 156.8 70.9 -7.6 1.8 1.20 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE)

L30 5 0 159.5 73.2 -6.0 3.6 .84 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L230S 0 160.6 69.0 -6.7 -.7 .99 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L360 0 162.0 70.9 -4.7 .5 .69 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L257B 0 162. 1 64.7 -7.0 -5.2 1. 17 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L354 0 162. 5 67. 1 -5.7 -3. 1 1. 18 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE ) L257A 0 162.7 73.8 -2.9 2.9 .79 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 57 0 163.0 68.0 -4.9 -2.5 1.08 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L301 0 163.5 71.9 -2.9 .9 .79 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 58 0 164.0 76.0 -.8 4.4 .75 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L122S 0 164.8 79.7 1.4 7.5 .94 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L597 0 16 5.0 67.2 -3.3 -4.0 1.26 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 32 0 16 5. 4 68.3 -2.5 -3. 2 .90 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L60 0 0 165.9 78. 1 1.8 5.6 1.25 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L223 0 166. 0 69.6 -1.5 -2.2 .93 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L312 166.2 79.6 2.6 6.9 .44 40 T AIR RESISTANCE, SHEFFIELD (3 INCH DIAMETER ORIFICE)

L352 0 166.2 78.4 2.2 5.8 .76 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L233 0 166.2 73.4 .2 1.2 .95 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L585 0 166.5 69.0 -1.3 -3. 0 1.11 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L17 3B 0 166.5 70.0 -.9 -2. 1 1.26 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L249 0 166. 6 70.2 -.7 -1.9 1.34 40 S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L213 0 167.2 79.0 3.3 6. 0 1.01 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L262S 0 167.8 72.2 1.2 -.5 .93 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L288 0 168. 1 73.7 2. 1 .7 1.39 40S AIR RESISTANCE. SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L37 2 0 168.5 72.6 2.0 -.4 1. 04 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L26 0 0 168. 8 72.7 2.3 -.5 .78 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L257C 0 168.9 77.7 4.4 4. 1 .64 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L575 0 169.8 71.6 2.8 -1.9 1.05 40 S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

LI 2 1 X 171.0 94.0 12.7 18.3 .92 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L687 0 171.8 73.9 5.5 -.5 .90 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

Li 48 0 171.9 77.3 7.0 2. 5 .92 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L684 0 173.4 66.6 4. 1 -7.9 1.06 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L562 0 177.6 69.6 9.2 -6. 8 1.17 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L19 0C 0 178.4 81.9 14.7 4.2 .84 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

LI 14 0 178.6 77.3 13.1 -. 1 .86 40S AIR RESISTANCE. SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L255 ft 183.8 96.5 25.4 15. 5 . 80 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE)

Li 50 * 184.4 74.3 17.3 -5. 1 1.41 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L24

1

ft 197.3 87.5 34.3 1.9 1.52 40S AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE)

L39 0 ft 201.0 92.0 39.5 4.6 1.25 40S AIR RESISTANCE, SHEFFIELD (3/4 INCH DIAMETER ORIFICE

)

L22 8 ft 206.8 131.2 60.2 38.4 1.54 4 OS AIR RESISTANCE, SHEFFIELD ( 3/4 INCH DIAMETER ORIFICE

)

L243B 647.9 224.9 5C2.7 -48.6 4.24 40B AIR RESISTANCE, BENDTSEN, WG 150 LI82B 755,0 270.0 618.9 -49.2 4. 52 4 OB AIR RESISTANCE, BENDTSEN. WG 150 GMEANS

166.5 72.2 1.00 95* ELLIPSE: 17.7 9.5 WITH GAMMA - 23 DEGREES

9
SHEFF.

UNITS

RIR RESISTANCE, SHEFFIELD

SAMPLE K43 = 166. SHEFF . UNITS SAMPLE B95 = 72. SHEFF . UNITS

10
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T41-1 TABLE 1 AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

DIRECT READING, SEC/10 CC, MERCURY DENSITY

SAMPLE BACKING SAMPLE RELEASE BASE TEST D. - 10 LAB EOS 98 GRAMS1 PEE SQUARE METER B73 116 GRAMS PER SQUARE METER

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

LI 22 861 . 78. 1.04 148. . 86 1 60 1 • 287. 1.02 874. 1.69 4 1G 0 LI 22

LI 26 814. 32. .42 139. .81 1 39 8® 84. .30 4 18. .81 4 1

G

O LI 28

LI 34 769. -14. -.18 161. .93 14490 136. .48 637. 1.23 4 1G 6 L 1 34 L166M 821. 38. .51 137. .79 1214c -100. -.36 293. .57 4 1

G

6 L166M

L195 703. -79. -1.05 152. .88 866. -428. -1.53 27*. .53 4 1G 6 LI 95

L23 0 706. -77. -1.02 224. 1.29 942. -372. -1.33 563. 1.09 4 1 G 0 L230

L259 78. -705. -9.35 14. .08 111. -1203. -4.29 30. .06 4 1G U L259

L31 2 750. -32. -.43 176. 1.02 1284. -30. -•11 552. 1.07 41G e L312 L358 877. 94. 1.25 144. . 83 1516. 202. • 72 693. 1.34 41G 0 L358 L557 773. -10. -.13 181. 1.C5 1579. 265. • 94 745. 1.44 4 1G 0 L557 L558 94 1. 158. 2. 10 361. 2.0 8 1704. 390. 1*39 673. 1.30 4 1G 0 L558

L57 4 722. -60. -.80 1 12. .65 1203. -111. -•40 227. .44 4 1 G 0 L574 L576 726. -56. -.74 1 09. .63 855. -459. - 1.64 216. .42 4 1G 0 L576

L61 8 7248. 6465. 85.78 1874. 10.83 13889. 12575o 44. 80 5543. 10.73 4 1G u L6 18 L697 709. -73. -.97 2 07. 1.20 1452. 138. © 49 550. 1.06 4 1G 0 L6 97

GR. MEAN - 783. SEC/10 CC GRAND MEAN - 1314. SEC/ 10 CC TEST DETERMINATIONS - 10 SD MEANS • 75. SEC/ 10 CC SD OF MEANS - 281. SEC/ 10 CC 13 LABS IN GRAND MEANS AVERAGE SDH - 173. SEC/1 0 CC AVERAGE SDR • 517. SEC/ 10 CC TOTAL NUMBER OF LABORATORIES REPORTING • 15

Best values: E65 780 + 100 seconds per lOcc, B73 1310 + 430 mercury density

(direct reading)

Data from the following laboratories appear to be off by a multiplicative factor: 259, 618.

The valuta reported here are the time In aeconds required for the displacement of

10 al of air through an area of 1.0 eq,

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

REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T41-1 TABLE 2 AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

DIRECT READING. SEC/1 0 CC. MERCURY DENSITY

LAB MEANS COORDINATES AVG CODE F E65 B73 MAJOR MINOR R. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L259 * 78. ill. -1318. 454. .07 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

LI 95 0 703. 386. -435. -7. .70 41G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L230 O 706. 942. -380. 2. 1.19 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L69 7 0 709. 1452. 121. 99. 1.13 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L574 0 722. 1203. -121. 37. .54 4 1 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L576 0 726. 855. -461. -35. .52 4 1 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L312 0 750. 1284. -35. 26. 1.04 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L134 0 769. 1449. 130, 40. 1.08 41

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

LS57 0 773. 1579. 258. 62. 1.24 41 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

LI 2 8 6 814. 139e. 6 8. -15. .81 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L166M 0 821. 1214. -91. -57. .68 4 1G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

LI 22 0 861. 1601. 297. -20. 1.27 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L358 0 877. 1516, 216. -53. 1.09 4 1

G

AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L55 8 0 941. 1704. 413. -78. 1,69 41G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

L61 8 « 7248. 13689. 13601. -3865. 10.78 41 G AIR RESISTANCE, HIGH RANGE, GURLEY MERCURY FLOTATION

GMEANS

783. 1314. 1.00 95* ELLIPSE: 843. 151. KITH GAMMA - 78 DEGREES

11
SEC/10

CC

AIR RESISTANCE, GURLEY HG FL0TATI0N

SAMPLE E65 = 783. SEC/10 CC

i i 1 SAMPLE B73 = 1314. SEC/10 CC

1 1 1 l

CDO

C\J CM

o

o

00 '

CDO

M"

^ +.X.* NOT IN GRAND MEANS

OCD ANALYSIS T 4 1 — 1 LU

Q_

CL

CO

C

O ©

O

O

©

©

O

CD

CDO

CDO

CD

CD

CD

CD •

©

© ©

©

©

©

SAMPLE E65

0 200 400 600 800 1000

SEC/10 CC

1400 1800

12
REPOBT NO. 59G TAPPI COLLABORATIVE REFBRENCE PROGRAM APRIL 1979 ANALYSIS T44-1 TABLE 1 SMOOTHNESS, PARKER PRINTSURF

SAMPLE wove ENVELOPE PAPER SAMPLE PRINTING TEST D. - 10 LAB A83 75 GRAMS PER SQUARE METER J50 94 GRAMS PER SQUARE METER

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

LI 22 4.653 .040 .24 . 179 1. 19 6.079 .278 1.25 .063 .72 44P 6 L 1 22

LI 82 4. 56 5 -.048 -.28 . 170 1. 13 5.755 -.046 -.21 .090 1.02 44 P 0 LI 82

LI 83 4.420 -.193 -1. IS .092 .61 5.760 -.041 -. 19 .070 . 80 44P 0 L 1 83 L223 4. 591 -. 022 -.13 . 185 1.23 6.015 .214 .96 . 101 1. 16 44P 0 L223 L288 4.940 .327 1.95 .171 l. 14 6.980 1. 179 5. 29 . 155 1.77 44 P ft L288 L317 4.870 .257 1.53 .116 .77 5.730 -.071 -.32 .116 1.33 44P 0 L317

L588 4.420 -. 193 -1.15 .215 1.43 5.400 -.401 1. 80 . 105 1.21 44 P 0 L588 L669 4.770 . 157 .94 .095 .63 5.870 .069 .31 .067 .77 44P 6 L669

GR, MEAN 4.613 MICRONS GRAND MEAN - 5.801 MICRONS TEST DETERMINATIONS • 1< SD MEANS - o 168 MICRONS SD OF MEANS * .223 MICRONS 7 LABS IN GRAND MEANS AVERAGE SDR •

• 150 MICRONS AVERAGE SDR -• 087 MICRONS

TOTAL NUMBER OF LABORATORIES REPORTING - 8 Best values: A83 4.6 microns

J50 6.0 microns

The following laboratories were omitted from the grand means because of extreme test results: 288.

REPORT NO, 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T44-1 TABLE 2 SMOOTHNESS. PARKER PRINTSURF

LAB MEANS COORDINATES AVG CODE F A83 J50 MAJOR MINOS R. SDR VAR PROPERTY-'--TEST :INSTRUMENT CONDITIONS

LI 83 0 4.420 5.760 -.124 . 153 .71 44P SMOOTHNESS, PARKER PRINTSURF

L568 0 4.420 5.400 -.445 -.009 1.32 44P SMOOTHNESS, PARKER PRINTSURF

L182 0 4.565 5.755 -.063 .022 1.08 44P SMOOTHNESS, PARKER PRINTSURF

L223 a 4.591 6.015 .181 . 116 1. 19 44P SMOOTHNESS. PARKER PRINTSURF

LI 22 0 4.653 6.079 .266 .089 .95 44P SMOOTHNESS, PARKER PRINTSURF

L669 0 4.770 5.870 . 132 -. 109 .70 44 P SMOOTHNESS, PARKER PRINTSURF L3I7 o 4.870 5.730 .052 -.262 1.05 44P SMOOTHNESS, PARKER PRINTSURF

L28 8 • 4.94 0 6.980 1.200 .239 1.46 44P SMOOTHNESS, PARKER PRINTSURF

GMEANS

4.613 5. 801 1.00 95* ELLIPSE: ,889 ,540 WITH GAMMA • 63 DEGREES

13
REPORT N«. 59G TAPPI C0LLAB0RATI VE REFERENCE PROGRAM APRIL 1979 ANALYSIS 145 - I TABLE 1 SM00TBNESS. SHEFFIELD ONITS SHEFFIELD TBSTER IS STANDARD F6R THIS ANALYSIS

LAB

SAMPLE

A83

HeVE ENVELOPE PAPER

75 GRAMS PER SQUARE METER

SAMPLE

J50 94 GRAMS

PRINTING

PER SQUARE METER TEST D. •> 15 CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

LI 00 112.7 7.1 .96 14.4 1.48 285.3 10.9 .83 13.7 1.84 45S 0 L100

LI 07 133.7 28. 1 3.80 14.3 1.46 302.7 28.2 2. 15 6. 8 .91 45S X L107

LI 1 4 115.7 1 0. 1 1.37 1 1.6 1.18 272.7 -1.8 -. 14 7.8 1.04 45S 0 LI 14

LI I 5 107.0 1.4 .20 9.2 .94 259.7 -14.8 -1. 13 14.5 1.94 45S 0 LI 15

LI 2

1

90.3 -15.2 -2.06 10.0 1. 02 257.8 -16.7 -1.27 4.7 .63 45S 0 L121

LI 22 115.5 9.9 1.34 16.5 1.69 266.7 -7.8 -.60 10.3 1.38 45S 0 LI 22

LI 23 10 2.6 -3.0 -.40 12.6 1.29 278.0 3.5 .27 10. 1 1.36 45S 0 LI 23

LI 24 91.4 -14.2 -1.91 8.6 . 88 260.7 -13.7 -1.05 6.9 .92 4SS 0 LI 24

LI 25 103,0 -2.6 -.34 1 1.5 1. 17 259.3 -15.1 -1. 16 10.0 1.34 ASS 0 LI 25

LI 26 107. 1 I.

5

.20 1S.7 1.60 276.4 1.9 .15 7.8 1.04 453 0 L126

LI 26 111.7 6.2 .83 11.5 1. 18 276.7 2.2 . 17 4.9 .66 45S 0 LI 28 L132 107.0 1.4 .20 19.0 1.94 283. 1 8.6 .66 6.4 .85 ASS 0 LI 32

LI 3 4 100.7 -4.9 -.66 8.6 .88 284.0 9.5 .73 8. 1 1.08 45S 0 LI 34 LI39S 113.2 7.6 1.03 5.8 .60 267.0 -7.5 -. 57 3.7 .*9 ASS 0 L139S

LI 4 8 114.5 8.9 1.20 5.9 .61 280.7 6.2 .47 6. 8 .91 45S 0 LI 48

LI 50 103.3 -2.3 -.31 8.9 .91 292.7 18.3 1.39 6.5 .88 45S 0 LI SO

LI 52 120. 1 14.6 1.97 8. 1 .83 257.5 -17.0 - 1.30 4.8 .65 4SS • LI 52

LI 53 109.9 4.3 .58 5.3 .54 293.0 18.5 1.41 5.9 .79 45S 0 LI 53

LI 57 111.5 5.9 .80 I 0.0 1.02 285.7 11.3 .86 5.9 .80 4SS 0 LI 57

LI 58 105.3 -.2 -.03 12.7 1.30 266.7 -7.8 -.60 7.0 .94 45S 0 L158

LI 59 110.3 4.7 .64 10. 1 1.03 282.3 7.8 .59 11.8 1.58 ASS 0 LI 59

LI 62 108.0 2.4 .33 1 1. 8 1.20 277.3 2.9 .22 8.0 1.07 45S 0 L162 L166 94. 1 -11.4 -1.54 6.0 .61 261.5 -13.0 -. 99 8.5 1. 14 ASS 0 LI 66 L167 108.3 2.7 .37 3.1 .31 261.7 -12.8 -.98 5.9 .79 ASS 0 LI 67 L173B 98.0 -7.6 •1.02 6.8 .69 256.7 -17.8 -1.36 9.0 1.21 458 0 L173B

L183S 102.5 -3.0 -.41 7.7 .79 266.3 -8.2 -.63 6.5 .87 4SS 0 L183S H90C 113.7 8. 1 1. 10 10.3 1.05 261.3 -13. 1 -1.00 6.4 . 86 45S 0 L190C

LI95 1 16. 8 11.2 1.52 11.7 l. 19 271.8 -2.7 -.21 8.9 1.20 45S 0 LI 95 L203 115.3 9.7 1.31 13.4 1. 37 276.2 1.7 .13 7.4 1.00 45S 0 L203

L206 114.3 8.8 1.19 1 1.6 1.19 275.3 .8 .06 5.4 .73 45S 0 L206

L21 1 100.5 -5.0 — .6 8 10. 1 1.03 260.5 -14.0 -1.07 5.9 .79 ASS 0 L211 L213 93. 1 -12.5 -1.69 8.5 .67 255. 1 -19.3 -1.48 6.7 .91 45S 0 L213 L223 104.5 -1. 1 -. 15 9. 1 .93 264.2 -10.3 -.78 7.2 .97 45S 0 L223 L226B ICO. 1 “5.5 -.74 8.5 .87 266.3 -8.2 -.63 9.5 1.28 ASS 0 L226B

L228 109.5 4.0 .54 7. 1 .73 287.5 13. 1 1.00 9.4 1.27 ASS 0 L228 L230S 99. 1 -6.5 -.88 1 1.4 1. 16 284.5 10. 1 .77 7.3 .98 45S 0 L230S

L231 106.2 .6 .09 7.7 .78 272.6 -1.9 -. 14 8. 1 1.09 45S 0 L231 L232S 104,7 -.9 -. 12 4.8 .49 285.0 10.5 .80 4.6 .62 ASS 0 L232S

L233 98.9 -6. 6 -.89 1 1.0 1. 13 280.7 6.2 .47 5.5 .74 ASS 0 L233 L237 104.3 -1.2 -. 16 6.2 .64 272.3 -2.1 -. 16 5.3 .71 45S 0 L237

L24I 1 10.3 4.8 .65 10.4 1.07 254.7 -19.8 -1.51 4.8 .65 ASS 0 L241 L249 106.9 1.3 .18 12.8 1.31 283.3 8.8 .67 11.3 1.52 ASS 0 L249 L254 109.2 3.6 .49 10.2 1.04 271.0 -3.5 -.27 7.9 1.06 ASS 0 L2S4 L255 114. 4 e.e 1.20 6.7 .68 279.9 5.5 .42 5.2 .70 45S 0 L2S5 L257A 100.9 -4.7 -.63 6.3 .65 273.5 -.9 -.07 7.7 1.03 ASS 0 L2S7A

L257B 108.7 3.2 .43 6.4 .66 277.3 2.9 .22 6.5 .87 ASS 0 L2S7B

L257C 103.3 2.7 .37 8.1 . 83 267.5 -7.0 -. 54 9.4 1.26 45S 0 L257C

L259 109.2 3.6 .49 9.3 .95 272.3 -2.2 -. 17 1 1.6 1.55 45S 0 L2 59 L260 108.6 3.0 .41 10.8 1. 1 1 266. 1 -8.3 -.64 2.7 .36 4SS 0 L260

L26 1 92.9 -12.6 -1.71 8.5 .87 278.3 3.9 .29 6.7 .90 ASS 0 L261

L26 2 104.5 -1.1 -. 15 9.1 .93 270.1 -4.3 33 10.9 1.47 ASS 0 L262

L275 102.7 -2.9 -.39 1 1.5 1. 17 280.7 6.2 .47 5.6 .76 45S 0 L275

L277 104.4 -1.2 -. 16 1 0.4 1. 06 294.2 19.7 1.50 7.7 1.03 453 0 L277 L278 1 13.0 7.4 1.01 10.6 1.09 294.0 19.5 1.49 9.7 1.30 ASS 0 L278

L26 1 110.7 5.2 .70 9.0 .92 268. 1 -6.3 -.48 9.0 1.21 4 5S 0 L281 L285 93.9 -11.7 -1.58 10.6 1.09 277.6 3. 1 .24 7.3 .99 45S 0 L285 L288 121.7 16. 1 2.18 14.0 1.43 290.8 16.3 1.25 7.9 1.07 45S 0 L288

L29 0 107.7 2.2 .29 9. 1 .93 247.8 -26.7 -2.04 5.5 .74 ASS 0 L290 L291S 104.5 -1.1 -.15 6.2 .64 285.6 11. 1 . 85 9.4 1.27 45S 0 L291S

L301 99.7 -5. 8 -.79 7.0 .71 276.2 1.7 .13 7.3 .98 ASS 0 L30

1

L30S 108.4 2.8 .38 8.7 .89 259.3 -15.2 •1.16 7.4 1.00 ASS 0 L305

L30 8 98.0 -7.6 -1.02 9.7 .99 274.0 -.5 -. 04 6. 8 .92 45S 0 L308 L312 118.1 12.5 1.69 16.4 1.67 292. 1 17.7 1.35 4.4 .60 ASS 0 L312 L317 98.0 -7.6 -1.02 8.0 .81 286.3 11.9 .90 7.7 1,03 45S 0 L317

L318 103.3 -2.2 -.30 7.2 .74 284.4 9.9 .76 10. 1 1.36 ASS 0 L318 14
REPORT NO. 59C TAPPI COLLAB6RATI VE REFERENCE PROGRAM APRIL 1979 ANALYSIS T45-1 TABLE 1 SMOOTHNESS, SHEFFIELD UNITS SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

SAMPLE »evE ENVELOPE PAPER SAMPLE PRINTING TEST D. - 15 LAB A 8-3 75 GRAMS1 PER SQUARE METER J50 94 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

L321 95.3 -10.2 -1.38 5.5 .56 266.7 -7.8 -.60 6.7 .90 45S a L321 L323 101.7 -3.9 -.53 8.6 .88 281.7 7.2 . 55 6.7 .90 45S <3 L3 23 L326 107.0 1.4 .20 9.3 .95 255.0 -19.5 - 1.49 5.2 .69 45S 6 L326

L32 8 115.7 10.2 1.38 8.0 .82 282.5 8. 1 .61 5.5 .74 45S 6 L329 L349 99.6 -5.8 -.78 £.7 .59 304.2 29.7 2.27 7.9 1.06 4 5 S * L349

L352I 109,7 4. 1 .56 9.4 .96 253. 1 -21.3 -1.63 11.4 1.53 45S 6 L352I

L36 0 102.0 -3.6 -.48 10.7 1.09 276.9 2.4 . 18 6.5 .87 45S L36C L372 104.3 -1.3 -.17 4. 1 .42 306.9 32.4 2.47 5. 8 .78 45S * L372 L376 111.3 5.7 .77 13. 1 1.34 279.9 5.4 .41 6. 6 .88 45S L3 76 L382 102.0 -3.6 -.48 8.2 .84 283.3 8.9 .68 7.0 .94 45S a 1.3 8?

L39 0 128.7 23. 1 3.12 10.8 1.10 303.0 28.5 2. 18 10.0 1.34 45S X L390 L396M 101.9 -3.7 -.50 6. 1 .62 261.4 -13. 1 - 1.00 5.2 .70 45S a L396M

L554 104.

7

-.9 -.12 19,6 2.00 274.0 -.5 -. 04 8 . 8 1.19 45S ft L55* L567 91.0 -14.6 -1.97 8.7 .89 268.2 -6.3 -.48 8.2 1.10 45S 6 L56 7 L571 120.7 15. 1 2.04 11.5 1,17 296.3 21.9 1.67 5.5 .74 4b S a L57 i L575 102. 1 -3.4 -.46 8.2 . 83 303.2 28.7 2. 19 6. 0 .81 45S a L575 L585 9 1.2 -14.4 -1.94 9.5 .97 268.0 -6.5 -.49 7.5 1.01 4 5S a L5 06 L597 96.0 -9.6 -1.29 11.4 1. 16 272.7 -1.8 -. 14 8. 8 1. 19 45 S a L597 L600 119.2 13.6 1.84 1 0.9 1.1 1 280.3 5.9 .45 6.4 . 86 4 5 S a L600 L626 104.7 -.9 -.12 10.7 1.09 277.3 2.9 .22 6. 8 .91 45S a L6 26 L64 8 107.5 2.0 .27 1 5o 5 1.59 275.9 1.5 .11 5. 8 .78 45S a Ix 4

' L651 108.7 3.2 .43 9.8 1.00 239.3 -35.2 -2.69 3.7 .50 45S Lo o 1 L670 10 1.4 -4.2 -.56 7.7 .78 288. 1 13.6 1.04 6. 1 .82 45S a L6 70 Lb 7 9 96.5 -9.0 -1.22 6.7 .68 246.9 -27.6 -2.11 9.3 1. 25 45S a L679

L68 8 105.5 -.0 -.00 12.3 1.26 271.9 -2.5 -. 19 7.4 .99 4 5S a L6 86

L69 8 O' CM • o -13.6 -1.83 8.9 .91 287. 1 12.7 .97 6.6 .89 45S a L698

GR© MEAN - 105.6 SBEFF. UNITS GRAND MEAN - 274.5 SHEFF© UNITS TEST DETERMINATI 6NS - i

SD MEANS * 7.4 SHEFF. UNITS SD 6F MEANS • 13. 1 SHEFF. UNITS 89 LABS IN GRAND MEANS

AVERAGE SDR - 9.8 SHEFFo UNITS AVERAGE SDR - 7.4 SHEFF. UNITS

LI 74 215.9 110.4 14© 9 1 5.9 .60 315.2 40.7 3. 1 I 3.3 .44 45R . LI 7* TOTAL NUMBER OF LABORATORIES REPORTING * 92

Best values: A83 105 + 13 Sheffield units

J50 274 + 21 Sheffield units

15
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T45-1 TABLE 2 SMOOTHNESS. SHEFFIELD UNITS SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG C0DE F A83 J50 MAJOR MINOR R.SDB VAR PROPERTY

-TEST INSTRUMENT- --CONDITIONS

LI 2 1 6 90© 3 257.8 -18.3 13. 2 .82 45S SMOOTHNESS. SHEFFIELD

L567 0 91.0 268.2 -7.9 13.7 1.00 45S SMOOTHNESS, SHEFFIELD

L585 0 91.2 268.0 -8. 1 13. 5 .99 45S SMOOTHNESS, SHEFFIELD

LI 24 0 91. 4 260. 7 -15.3 12.5 .90 45S SMOOTHNESS. SHEFFIELD

L69 8 0 92.0 287. 1 11.0 14.9 .90 45S SMOOTHNESS, SHEFFIELD

L261 0 92.9 278.3 2.4 13.0 .89 45S SMOOTHNESS, SHEFFIELD

L213 0 93. 1 255. 1 -20.7 10.2 .89 45S SM60TBNESS, SHEFFIELD

L2 85 0 93.9 277.6 1.8 12.0 1. 04 45S SMOOTHNESS, SHEFFIELD

LI 66 0 94. 1 26 l.S -14.2 9.8 .88 45S SMOOTHNESS, SHEFFIELD

L32 1 0 95.3 266. 7 -8.9 9.3 .73 45S SMOOTHNESS, SHEFFIELD L597 0 96.0 272.7 -2.9 9.3 1. 17 45S SMOOTHNESS, SHEFFIELD

L679 0 96.5 246.9 -28.5 5. 8 .96 45S SMOOTHNESS, SHEFFIELD

L317 0 98.0 286.3 10.9 8.9 .92 45S SMOOTHNESS, SHEFFIELD

L30 8 0 98.0 274.0 -1.3 7.4 .95 45S SMOOTHNESS, SHEFFIELD

LI 73B 0 98.0 256. 7 -18.6 5.5 .95 45S SMOOTHNESS, SHEFFIELD

L233 0 98.9 280.7 5.4 7.3 .93 45S SMOOTHNESS, SHEFFIELD L230S e 99. 1 284.5 9.2 7.6 1.07 45S SMOOTHNESS. SHEFFIELD

L30 1 0 99.7 276.2 1.0 6. 0 .85 45S SMOOTHNESS, SHEFFIELD

L34 9 * 99. 8 304.2 28.9 9. 1 .83 45S SMOOTHNESS, SHEFFIELD L226B 0 100. 1 266.3 -8.8 4.5 1.07 45S SMOOTHNESS, SHEFFIELD

L21 1 0 100.5 260.5 -14.5 3.4 .91 45S SMOOTHNESS, SHEFFIELD

LI 34 0 ICO. 7 2 84.0 8.9 6. 0 .98 45S SMOOTHNESS, SHEFFIELD L257A 0 100.9 273.5 -1.5 4. 5 .84 45S SMOOTHNESS, SHEFFIELD

L670 0 101. 4 288. I 13.0 5.7 .80 45S SMOOTHNESS, SHEFFIELD

L323 0 101.7 261.7 6.7 4.7 .89 45S SMOOTBNESS, SHEFFIELD

L396M 0 101.9 261.4 -13.4 2.2 .66 45S SMOOTHNESS, SHEFFIELD

L382 0 102. 0 283.3 8.4 4.6 .89 45S SMOOTHNESS, SHEFFIELD

L360 0 102.0 276.9 2.0 3. 8 .98 45S SMOOTHNESS, SHEFFIELD

L575 0 102. 1 303.2 28. 1 6.7 .82 45S SMOOTHNESS. SHEFFIELD

L163S 0 102.5 266.3 -8.5 2. 1 c 83 45S SMOOTHNESS, SHEFFIELD

LI 23 0 102.6 278.0 3.2 3.3 1.33 45S SMOOTHNESS, SHEFFIELD

L27 5 0 102.7 280.7 5.8 3.6 .96 45S SMOOTHNESS, SHEFFIELD

LI 25 0 103.0 259.3 -15.3 .8 1.26 45S SMOOTHNESS, SHEFFIELD

LI 50 0 103. 3 292.7 17.9 4.4 .89 45S SMOOTHNESS, SHEFFIELD

L316 0 103. 3 284.4 9.6 3. 3 1. 05 45S SMOOTHNESS. SHEFFIELD L372 » 104.3 306.9 32.0 5.0 .60 45S SMOOTHNESS, SHEFFIELD

L237 0 104. 3 272.3 -2.3 1.0 .67 45S SMOOTBNESS, SHEFFIELD

L277 0 104.4 294.2 19.5 3.4 1.04 45S SMOOTHNESS, SHEFFIELD

L29 1S 0 104. 5 285.6 10.9 2.4 .95 45S SMOOTHNESS, SHEFFIELD

L262 0 104.5 270. 1 -4.4 .6 1.20 45S SMOOTHNESS, SHEFFIELD L223 0 1 04.5 264.2 -10.3 -. 1 .95 45S SMOOTHNESS, SHEFFIELD

L626 0 104.7 277.3 2.7 1.2 1.00 45S SMOOTHNESS, SHEFFIELD

L554 0 104.7 274.0 -.6 .8 1. 59 45S SMOOTHNESS, SHEFFIELD L232S 0 104.7 285.0 10.3 2. 1 .56 45S SMOOTHNESS, SHEFFIELD

LI 5

8

0 10 5. 3 266.7 -7.8 -.7 1.12 45S SMOOTHNESS. SHEFFIELD

L68 8 0 105® 5 271 .9 -2.5 -.3 1. 12 45S SMOOTHNESS, SHEFFIELD

L23

1

0 106. 2 272.6 -1.8 -.9 .94 45S SMOOTHNESS, SHEFFIELD

L24 9 6 106.9 283.3 8.9 -. 3 1.41 45S SMOOTHNESS. SHEFFIELD

LI 32 0 107. 0 283. 1 8.7 -.4 1.40 45S SMOOTHNESS, SHEFFIELD

L326 0 1 C7. 0 255.0 -19.2 -3.7 .82 45S SMOOTHNESS, SHEFFIELD

LI 15 0 107. 0 259.7 -14.5 -3. 1 1.44 45S SMOOTHNESS, SHEFFIELD

LI 26 0 107. 1 2 76.4 2.1 -1.3 1.32 45S SMOOTHNESS, SHEFFIELD

L64 8 0 107.5 275.9 1.7 -1.8 1. 18 45S SMOOTHNESS, SHEFFIELD

L29 0 0 107.7 247.8 -26.2 -5.2 .84 45S SMOOTHNESS, SHEFFIELD

LI 6 2 0 108. 0 277.3 3. 1 -2. 1 1. 14 45S SMOOTHNESS, SHEFFIELD

L 1 6 7 0 108.3 261.7 -12.4 -4.2 .55 45 S SMOOTHNESS, SHEFFIELD

L25 7C 0 108. 3 267. 5 -6.7 -3.5 1.05 45S SMOOTHNESS, SHEFFIELD L305 0 108. 4 259.3 - 14.8 -4. 6 .94 45S SMOOTHNESS, SHEFFIELD

L26 0 0 108. 6 266. 1 -7.9 -4. 0 .73 45S SMOOTHNESS, SHEFFIELD L257B 0 108.7 277.3 3.2 -2.8 .76 45 S SMOOTBNESS, SHEFFIELD

L651 « 108.7 239.3 -34.6 -7.2 .75 45S SMOOTHNESS, SHEFFIELD

L2 59 0 109.2 272.3 -1.8 -3.9 1.25 45S SMOOTHNESS, SHEFFIELD

L25 4 0 109. 2 271.0 -3.0 -4.0 1.05 45S SMOOTBNESS. SHEFFIELD

L22 8 0 109. 5 287.5 13.4 -2.4 1.00 45S SMOOTBNESS, SHEFFIELD

L352I 0 109.7 253. 1 -20.7 -6.5 1.24 45S SMOOTHNESS, SHEFFIELD

16
REPORT NO, 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T4S-1 TABLE 2 SMOOTHNESS, SHEFFIELD UNITS SHEFFIELD TESTER IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG CODE F A83 J50 MAJOR MINOS R. SDR VAR PROPERTY— -TEST INSTRUMENT—-CONDITIONS

L 153 0 109. 9 293.0 18.9 -2. 1 .67 45S SMOOTHNESS, SHEFFIELD

Li 59 0 110.3 282.3 8.3 -3. 8 1.31 45S SMOOTHNESS, SHEFFIELD

L241 0 110.3 254. 7 -19. 1 -7.0 .86 45S SMOOTHNESS, SHEFFIELD

L26 1 0 110.7 268.1 -5.7 -5.9 1.07 45 S SMOOTHNESS, SHEFFIELD

L376 0 1 1 1.3 279.9 6.0 -5. 1 1. 1 1 45S SMOOTHNESS. SHEFFIELD

Li 57 0 111.5 285.7 11.9 -4.6 .91 45S SMOOTHNESS, SHEFFIELD

LI 2 8 0 11 1.7 276.7 2.9 -5.9 .92 45S SMOOTHNESS, SHEFFIELD

Li 0 0 0 112. 7 285.3 11.6 -5.8 1.66 45S SMOOTHNESS, SHEFFIELD

L27 8 0 113.0 294.0 20.2 -5. 1 1. 19 45S SMOOTHNESS, SHEFFIELD

L139S 0 1 1 3o 2 267. 0 -6.5 -8.5 .55 45S SMOOTHNESS, SHEFFIELD L190C 0 1 13.7 261.3 -12. 1 -9.6 .95 45S SMOOTHNESS, SHEFFIELD

L206 0 114.3 275.3 1.8 -8.6 .96 45S SMOOTHNESS, SHEFFIELD

L255 0 114.4 279.9 6.4 -8.2 .69 45S SMOOTHNESS, SHEFFIELD

Li 4 8 0 114.5 280.7 7.2 -8. 1 .76 45S SMOOTHNESS, SHEFFIELD

L20 3 0 1 15. 3 276.2 2.8 -9.5 1. 18 45S SMOOTHNESS, SHEFFIELD

Li 22 0 115.5 266.7 —6,6 -10.7 1. 53 45S SMOOTHNESS, SHEFFIELD

Li 1 4 0 1 15.7 272.7 -.6 -10.3 1.11 45S SMOOTHNESS, SHEFFIELD

L328 0 1 15.7 282.5 9.2 -9.2 .78 45S SMOOTHNESS, SHEFFIELD

L 1 9 5 0 1 16. 8 271.8 -1.4 -11.5 1. 19 45S SMOOTHNESS, SHEFFIELD

L312 0 1 18. 1 292. 1 19.0 -10. 4 1. 13 45S SMeeTHNESS, SHEFFIELD

L60 0 0 119.2 280.3 7.4 -12.9 .98 45S SMOOTHNESS, SHEFFIELD

Li 52 * 12C. 1 257. 5 -15.2 -16.4 .74 45S SMOOTHNESS, SHEFFIELD

L571 0 120.7 296.3 23.5 -12.5 .96 45S SMOOTHNESS, SHEFFIELD

L288 0 121.7 290.8 18. 1 -14. 1 1.25 45S SMOOTHNESS, SHEFFIELD

1390 X 128.7 303.0 31.0 -19.7 1.22 45S SMOOTHNESS, SHEFFIELD

L107 X 133.7 302.7 31.2 -24.7 1.19 45S SMOOTHNESS, SHEFFIELD

Li 7 4 « 215.9 315.2 53.2 -105.0 .52 45 R SMOOTHNESS, SHEFFIELD, NON-STANDARD INSTRUMENT

GMEANS

105.6 274.5 1.00 95* ELLIPSE: 33.0 18.3 WITH GAMMA 83 DEGREES

17
SHEFF.

UNITS

230

240

250

260

270

280

290

300

310

320

SM00THNESS, SHEFFIELD

SAMPLE A83 = 106. SHEFF . UNITS SAMPLE J50 = 274. SHEFF . UNITS

SHEFF. UNITS

18
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T45-2 TABLE 1 SMOOTHNESS , BEKK SECONDS

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

SAMPLE ROVE ENVELOPE PAPER SAMPLE PRINTING TEST D. - 15 LAB A83 75 GRAMS PER SQUARE METER J50 94 GRAMS PER SOUARE METER CODE MEAN DEV N. DEV SDR R, SDR MEAN DEV N .DEV SDR R. SDR VAR F LAB L139B 53.60 .75 .20 9.54 1.26 1 1. 13 -.14 -.08 1. 19 1.66 45K 0 L139B

L162 51.07 -1.78 -.48 4.71 .62 10.00 -1.27 -.71 .38 .53 45K 0 L 1 62 L102K 54.40 l.SS .42 9.98 1.32 9.79 -1.48 -.63 .83 1.16 45K 0 LI 82K L190C 58,47 5.62 l.SI 9.82 1.30 11.07 -.20 -.11 .75 1.05 45K 0 L190C

L23 0B 56.87 4.02 1.08 6.75 .89 9.27 -2.00 1. 11 .70 .98 45K 0 L230B L232B 49.61 -3.24 -.87 5.55 .73 15. 56 4.29 2.38 .87 1.22 46K e L232B

L243K 50.60 -2.25 -.60 5.22 .69 1 1.73 .46 .26 .60 .84 45K 6 L243K

L291K 56.85 4.00 1.08 11.67 1.54 12.67 1.40 .78 .99 1.38 45K 6 L291 K L58 1 49. 47 -3.3 8 -.91 7.28 .96 11.00 -.27 -.15 .38 .53 45K O L5 81 L69 7 47.56 -5.29 -1.42 5.10 .67 10.49 -.78 -.43 .46 .65 45K 0 L6 97

GR. MEAN * 52.85 BEKK SECONDS GRAND MEAN • 11.27 BEKK SECONDS TEST DETERMINATIONS » 15 SD MEANS • 3.72 BEKK SECONDS SD OF MEANS - 1.80 BEKK SECONDS 10 LABS IN GRAND MEANS

AVERAGE SDR - 7.56 BEKK SECONDS AVERAGE SDR • .71 BEKK SECONDS L250M 44.20 -8.65 •2.32 5. 10 .67 9.60 -1.67 -•93 .51 .71 45L L250M

TOTAL NUMBER OF LABORATORIES REPORTING 1 1

Best values: A83 52 Bekk seconds

J50 11 Bekk seconds

REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM ANALYSIS T45-2 TABLE 2 SMOOTHNESS , BEKK SECONDS

TAPPI SUGGESTED METHOD T479 SU-71, SMOOTHNESS OF PAPER (BEKK METHOD) LAB MEANS COORDINATES AVG CODE F A83 J50 MAJOR MINOR R. SDR VAR PROPERTY—-TEST

L25 0M 44® 20 9.60 -8.34 -2.85 .69 45L SMOOTHNESS, BEKK,

L69 7 0 47.56 10.49 -5. 13 -1. 50 .66 45K SMOOTHNESS, BEKK

L581 0 49.47 11.00 -3.31 -.74 .75 45K SMOOTHNESS, BEKK

L23 2B 0 49.61 15.56 -3.80 3.80 .98 45K SMOOTHNESS, BEKK L243K 0 50.60 1 1.73 -2. 29 .15 .77 45K SMOOTHNESS, BEKK

L 16 2 0 51.07 10.00 -1.59 -1.51 .58 45K SMOOTHNESS, BEKK L139B 0 53.60 11. 13 .76 -.03 1.46 45K SMOOTHNESS, BEKK L182K 0 54.40 9.79 1.74 -1. 26 1.24 45K SMOOTHNESS, BEKK L291K 0 56.85 12. 67 3.77 1.93 1.46 45K SMOOTHNESS, BEKK L230B 0 56.87 9.27 4.26 -1.43 .94 45K SMOOTHNESS, BEKK

LI 9 OC 0 58.47 1 1.07 5.59 .58 1. 17 45 K SMOOTHNESS, BEKK GMEANS

£2.85 11.27 1.00

95* ELLIPSE: 1 1. 89 5.51 WITH GAMMA - -7 DEGREES

APRIL 1979

19
BEKK

SECONDS

SMOOTHNESS , BEKK

SAMPLE A83 = 52.8 BEKK SECONDS SAMPLE J50 =11.3 BEKK SECONDS

J I I I I 1 1 1 I I I I L 0 + . X . » NOT IN GRAND MEANS

- LQ

“O ANALYSIS T45-2

LU

- _J

Q_

SI

CL

CO

O

0

O

O —0 0

O

o

+ 0

o

1 1 1 1 1 1 1 SAMPLE A83

,

1 1 1 1 1 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66

BEKK SECONDS

20
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T47-1 TABLE 1 SMOOTHNESS. BENDTSEN

SAMPLE W0VE ENVELOPE PAPER SAMPLE PRINTING TEST D. * 10 LAB A83 75 GFAMS PEE SQUARE METES J50 94 GRAMS PER SQUARE MBTER

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

L100 106. -13. -1.03 12. .73 54 0. 24. .54 43. . 83 47B 0 LI 00 L182B 144. 26. 2.08 27. 1.67 530. 14. .31 45. . 88 47B 6 L182B

L236 123. 4. .35 10. .62 514. -2. -.04 78. 1.51 47B 6 L236 L242 1 16. -3. -.25 17. 1.02 495. -20. -.45 78. 1.51 47B 6 L242 L243B 114. -5. -.40 13. .77 596. 80. 1.77 56. 1. 10 47B e L243B

L244 114. -5. -.43 17. 1.05 467. -49. - 1.09 34. .66 47B 6 L244

L24 8 1 15. -4. -.31 19. 1. 14 469. -47. -1.04 26. .51 47B 6 L248

L333 100. -19. -1.57 52. 3.19 75. -441. -9.79 1. .02 47B ft L333

L6 85 47. -72. -5.87 1. .08 84. -432. -9.59 12. .24 47B ft L605

GR. MEAN • 119. ML/MIN GRAND MEAN - 516. ML/MIN TEST DETERMINATIONS • 1 0 SD MEANS * 12. ML/MIN SD OF MEANS 45. ML/MIN 7 LABS IN GRAND MEANS AVERAGE SDR • 16. ML/MIN AVERAGE SDR - 51. ML/MIN

TOTAL NUMBER OF LABORATORIES REPORTING * 9

Best values: A83 115 milliliter per minute

J50 510 milliliter per minute

The following laboratories were omitted from the grand means because of extreme test results: 333,

685.

REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T47-1 TABLE 2 SMOOTHNESS, BENDTSEN

LAB CODE F MEANS

A63 J50 COORDINATES

MAJOR MINOR AVGR. SDR VAR PROPERTY- —TEST INSTRUMENT CONDITIONS

L6es ft 47. 84. -433. 66. . 16 47B SMOOTHNESS, BENDTSEN, WG ISO L333 ft 100. 75. -44 1. 13. 1.60 47B SMOOTHNESS, BENDTSEN, WG 150 L100 6 106. 540. 24. 13. .78 47B SMOO T BN ESS, BENDTSEN, WG 150 L24 4 0 t 14. 467. -49. 5. .86 47 B SMOOTHNESS, BENDTSEN, WG 150 L243B 6 1 14. 596. 80. 6. .93 47B SMOOTHNESS, BENDTSEN, WG 150 L24 8 0 1 15. 469. -47. 3. .82 47B SMOOTHNESS, BENDTSEN, WG 150 L242 0 1 16. 495. -2 0. 3. 1.27 47B SMOOTHNESS, BENDTSEN, WG 150 L236 0 123. 514. -2. -4. 1.06 47 B SMOOTHNESS, BENDTSEN, WG 150 L182B 0 144. 530. 14. -25. 1.27 4 7B SMOOTHNESS, BENDTSEN, WG 150 GMEANS

119. 95*

516. ELLIPSE: 168. 46. 1.00 KITH GAMMA - 89 DEGREES

21
REPORT N0. 59C TAPPI COLLABORATI VE REFERENCE PROGRAM APRIL 1979 ANALYSIS T56-1 TABLE 1 KAN INK ABSORPTION

SAMPLE HEAT SET OFFSET BOOK SAMPLE PRINTING TEST D. 4 LAB BS8 76 GRAMS; PER SQUARE METER E50 91 GRAMS PER SQUARE METER

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

L 1 26 53.8 -6.9 -1.02 .7 1.03 57.5 -6.2 1.04 .3 .66 56 K 6 LI 26 L149 56.7 -3.9 -.58 .5 .71 59.2 -4.5 -.75 .5 1. 1 1 56K e LI 49 L 1 62 61.6 1.2 .18 .5 .76 66.1 2.3 .39 . 1 .26 56K e LI 82 L213 64.5 3.9 .58 .9 1.26 68.2 4.5 .75 • 3 .59 S6K o L213

L277 67.2 6.6 .98 1.3 1.77 70.0 6.2 1,04 .0 .00 56K 0 L277

L291 63.6 3. 1 .47 .6 .78 65.2 1.5 .24 .4 .90 56K 0 L291 L333 53.2 -7.4 -1.10 .5 .71 57.5 -6.3 1.04 1.0 2.22 56K 0 L333

L339 71.5 10.9 1.61 .6 .61 72.7 9.0 l.SO .5 1.11 56K e L339

L643 53. 0 -7.6 -1.13 .8 1. 15 57.2 -6.5 1.06 1.0 2. 13 56K e L643

GR« MEAN • 60.6 K A N UNITS GRAND MEAN - 63.

8

K A N UNITS TEST DETERMINATIONS • SD MEANS • 6.7 K A N UNITS SD OF MEANS • 6.

0

K A N UNITS 9 LABS IN GRAND MEANS

AVERAGE SDR - .7 K A N UNITS AVERAGE SDR * .4 KAN UNITS

L65 1 33.4 -27. 3 -4.04 .2 .27 32.2 -31.5 5.25 . 1 .26 560 L6S1 L668 27.7 -32.9 -4.86 .4 .52 26.1 -37.7 6.28 .4 1.00 560 L668 TOTAL NUMBER OF LABORATORIES REPORTING • 1

1

Best values: B58 61 K & N units

E50 64 K & N units

REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T56-1 TABLE 2 KAN INK ABSORPTION

LAB MEANS COORDINATES AVG CODE F B56 E5 0 HAJOE MINOR R. SDR VAR PROPERTY—TEST INSTRUMENT- —CONDITIONS

L668 27.7 26. 1 -49.6 -6. 3 .76 560 INK ABSORPTION; 0WN METHOD

L651 33.4 32.2 -41.3 -5.4 .27 560 INK ABSORPTION: 0WN METHOD

L643 6 53.0 57.2 -10.

0

.2 1.64 56K INK ABSORPTION, KAN INK TEST

L333 6 53. 2 57.5 -9.7 .2 1.46 56 K INK ABSORPTION, KAN INK TEST

LI 26 6 53.8 57.5 -9.3 -. 1 .84 56 K INK ABSORPTION, KAN INK TEST

LI 49 0 56.7 59. 2 -5.9 -.8 .91 56 K INK ABSORPTION, KAN INK TEST

L182 0 61.8 66.1 2.4 .9 .53 56K INK ABSORPTION, KAN INK TEST

L29 1 0 63.6 65.2 3.3 -1.0 .84 56K INK ABSORPTION, KAN INK TEST

L213 0 64.5 68.2 5.9 .8 .93 56 K INK ABSORPTION, KAN INK TEST

L277 0 67.2 70.0 9. 1 .3 .89 56K INK ABSORPTION, KAN INK TEST L339 0 71.5 72.7 14. 1 -.5 .96 56K INK ABSORPTION, KAN INK TEST

GMEANS: 60.6 63.6 1.00 95% ELLIPSE? 29.6 2.2 WITH GAMMA - 41 DEGREES

22
REPORT NO. 590 TAPPI COLLABORATE VE REFERENCE PROGRAM APRIL 1979 ANALYSIS 157-1 TABLE 1 HYDROGEN ION CONCENTRATION (PH), COLD

TAPPI STANDARD T509 OS-77 SAMPLE PRINTING SAMPLE PRINTING TEST D. • 5 LAB J75 76 GRAMS PER SQUARE METER J17 93 GRAMS PER SQUARE MBTER CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

L174C 6,34 0 , 167 1.92 .055 .81 6.300 1.647 1 8.05 • 141 3.55 57F it L1^4C

L182C 6,206 .033 .38 .031 .46 4.676 .023 .25 .018 .46 57D G L182C

L320 6. ISO .007 .08 • 130 1.93 4.560 -.093 -1. 02 .089 2. 25 57M e L328 L356 6. 050 -.123 1.40 .071 1.05 4.770 .117 1. 28 .027 .69 57V 6 L356

L442 6.254 . 082 .94 .038 .56 4.607 -.046 -.51 . 024 .61 576 e L442

GR. MEAN - 6, 1 73 PH UNITS GRAND MEAN - 4.653 PH UNITS TEST DETERMINATIONS - 5 SD MEANS - . 087 PH UNITS SD OF MEANS * .091 PH UNITS 4 LABS IN GPAND MEANS

AVERAGE SDR - .067 PH UNITS AVERAGE SDR - .04 0 PH UNITS

TOTAL NUMBER OF LABORATORIES REPORTING * 5

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

REPORT NO, 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS 157- 1 TABLE 2 HYDROGEN ION CONCENTRATION (PH), COLD

TAPPI STANDARD T509 OS-77 LAB MEANS COORDINATES AVG CODE F J75 J 17 MAJOE MINOR R. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L356 6 6.050 4.770 -.169 -.009 .87 57V PH, COLD, BECKMAN EXPANDOMATIC

L32 8 6 6. 180 4.560 .073 -.059 2.09 57M PH, COLD, BECKMAN ZEROMATIC

L182C 0 6.206 4.676 .0 06 .040 .46 57D PH. COLD, RADIOMETER TYPE PH M 28 L442 0 6. 254 4.6C7 .090 .028 .58 570 PH. COLD, ORION DIGITAL IONALYZER

L174C * 6. 340 6.300 -1.082 1.252 2. 18 57F PH, COLD, FISHER ACCUMET MODEL 220 GMEANS: 6.173 4.653 1.00 95% :ELLIPSE: .899 .337 WITH GAMMA - -46 DEGREES

23
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T57-2 TABLB 1 HYDROGEN ION CONCENTRATION (PH). HOT

TAPPI STANDARD T435 OS-77

SAMPLE PRINTING SAMPLE PRINTING TEST D. ' 5 LAB J75 76 GRAMS PER SQUARE METER J17 93 GRAMS PER SQUARE METER

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

LI 2 8 5*660 .042 .47 .055 1.46 4.320 .001 .05 .045 1. 39 57L 0 LI 28

LI 62 5.574 -.044 -.49 . 030 .80 4.324 .005 .25 .025 .78 57C 0 L162

LI74H 7.760 2. 142 23.90 .055 1.48 8. 120 3.801 190.37 .084 2. 59 57G a L174H

LI 82H £.5 18 -.100 -1.12 .019 .52 4.292 -.027 -1.35 .004 .14 57E 0 L182H

L334 5.720 . 102 l. 14 . 045 1.21 4.340 .021 1. 05 .055 1.70 57C 0 L334

GR® MEAN • 5.618 PH UNITS GRAND MEAN - 4.319 PH UNITS TEST DETERMINATIONS • 5 3D MEANS - © 090 PH UNITS SD OF MEANS * . 020 PB UNITS 4 LABS IN GRAND MEANS

AVERAGE SDR • .037 PH UNITS AVERAGE SDR • .032 PH UNITS

TOTAI. NUMBER OF LABORATORIES REPORTING * 5

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

REPORT NOo 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T57-2 TABLE 2 HYDROGEN ION CONCENTRATION (PH). HOT TAPPI STANDARD T435 OS-77 LAB MEANS COORDINATES AVG C0DE F J75 J17 NAJ0B MINOR R. SDP VAR PROPERTY TEST INSTRUMENT— -CONDITIONS

L182H 0 5.518 4.292 -.103 -.C07 .33 57 E PH , HOT. RADIOMETER TYPE PH M 28

Li 62 0 5.574 4.324 *.042 .013 .79 57C PH. HOT, CORNING MODEL 12 RESEARCH METER

LI 2 8 0 5.66 0 4.320 • 041 -.007 1.43 57L PH, HOT, L*N

L33 4 0 5.720 4.340 • 104 .001 1. 45 57C PH, HOT. CORNING MODEL 12 RESEARCH METER

LI 74H ft 7.76 0 8 © 120 2. 832 3.319 2.03 57G PH, HOT, FISHER ACCUMET MODEL 220 GMEANS: 5.618 4.319 1.00 95% .ELLIPSE: .694 .074 WITH GAMMA • 11 DEGREES

24
REPORT N6. 590 TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T60-1 TABLE 1 OPACITY ( 89% RBFLECTANCE BACKING) IN PERCENT

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

SAMPLE SEMI BLEACBED SAMPLE PRINTING TEST D, - 10 LAB B21 65 GRAMS> PER iSQUARE METER K24 103 GRAMS PER SQUARE METER CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N.DEV SDR R. SDR VAR F I AB

LI 0 5 72,64 .21 .20 .84 .79 95.48 .05 . 12 .17 .54 60H e LI 05

LI 15 73,06 .63 .58 1.39 1.30 95© 28 -.15 -.40 .27 .87 60B 0 LI 15

LI 1 8 72,78 .35 .32 1.36 1.28 95.41 -.02 -. 06 .32 1 . 04 6 OB 0 LI 18 LI 2 1 72,48 .05 .05 1.46 1.37 94. 83 -.60 -1.58 .33 1.05 60B 0 Li 2 1 LI 2 2 71,25 -1.18 -1.08 1.04 .98 95.39 -.04 -. 11 .25 .81 60D 0 LI 22

LI 23 71.12 -1.31 •1.20 1.08 1.02 95.27 -. 16 -.43 .53 1.69 60W O LI 23

LI 24 73.45 1.02 .94 1.16 1. 10 96.01 .58 1.51 .25 .80 60B 0 Li 24

LI 25 72. 1 1 -.32 -.29 .99 .93 95. 14 -.29 -.77 .43 1.39 6 OH O L i 25 L13 1 70.55 -i.ee -1.72 .78 .74 94.57 -.86 -2. 25 .15 .48 6 OR 0 Li 3i

LI 32 71. 59 -.84 -.77 1.52 1.44 95.36 -.07 -o 19 .32 1.04 60B 0 L 1 32

LI 34 72.50 .07 .07 .71 .67 95.60 .17 .44 .52 1.67 60R 0 Li 34

LI 39 71.87 -.56 -.51 1.36 1.28 95. 08 -.35 -.92 .45 1.46 60B 0 LI 39 L14 8H 72. 10 -.33 -.30 .96 .90 95.21 -.22 -.58 ,33 1.07 6 OH 0 Li 48H

LI 50 73.65 1.22 1.12 .85 . 80 95. 95 .52 1.35 .28 .92 60B Li 50

LI 52 73,36 .93 .86 .81 .76 95.60 .17 .44 .16 .53 60B 0 LI 52

LI 53 71.35 -1.08 -.98 1.29 1.22 95.50 .07 . 17 .41 1.32 60B 0 L 1 53

LI 57 73.30 .87 .80 1.06 1.00 95.80 .37 .96 .26 .83 6 OB 0 L l 57

LI 58 73.50 1.07 .98 .69 .65 9 5. 82 .39 1.01 .36 1.18 60D 6 L 1 58

LI 59 71.67 -.76 -.69 .74 .70 95.67 .24 .62 .19 .63 60R 0 LI 59

L 1 62 71.52 -.91 -. 83 1.35 1.27 95.61 .18 .46 .32 1.05 60W 0 LI 62

LI 66 71.00 -1.43 -1.31 1.34 1.27 95. 14 -.29 -.77 .22 .70 60B 0 L 1 66 L173A 71.74 -.69 -.63 1.35 1.27 95. 39 -.04 -.11 . 38 1.24 603 0 L 1 7-'

A

L206 72.49 .06 .06 .93 .88 95.46 .03 .07 .25 .82 6 OB 0 L2 06 L21 OB 72.66 .23 .21 1.00 .94 95.33 -.10 -.27 .23 .75 60B 0 L2 1 r B L210D 73.38 .95 .87 1.40 1.32 95.72 .29 .75 .20 .64 60D 0 L210D

L21 IS 72.53 .10 .10 1.19 1. 12 95.28 -o 15 -.40 .29 .95 60R 0 L2 I I S L212 74.51 2.08 1.91 1.86 1.75 95© 85 .42 1.09 .58 1.88 6 OB 0 L2i2 L213 72.65 .22 .21 .79 .75 95.68 .25 .64 .24 .79 60 B 0 L213 L223B 72.81 .38 .35 .56 .53 95.49 .06 . 15 .39 1.27 60B 0 L223B

L225 72.35 -.oe -.07 .66 .62 95.75 .32 . 83 .53 1.70 60B 6 L2 25 L226B 71.31 -1.12 -1.02 1.03 .97 95.21 -.22 -.58 .45 1.45 60B 0 La -16P L228 71. CO -1.43 -1.31 1.00 .94 95. 14 -.29 -.77 .31 1.01 60H 0 L2 2R L230 71.81 -.62 -.56 1.19 1. 12 95.63 .20 .51 .38 1.23 6 OB 0 L230 L236B 70.74 -1.69 -1.54 1.50 1.41 95.08 -.35 -.92 .38 1.22 6 OB 0 L236B

L238A 70.46 -1.97 -1.80 .82 .77 94.66 -.77 -2.02 .29 .94 60 R 0 L238A

L24 1 72.05 -.38 -.34 1.22 1.15 95.19 -.24 -.64 .30 .97 60B 0 L241 L24 3 71.35 -1.08 -.98 1.68 1. 58 95.21 -.22 -. 58 .24 .78 6 OB 0 L243 L254 72.87 .44 .41 1.15 1.09 95.53 .10 . 25 .21 .66 60H 0 L254

L259 73.49 1.06 .97 .48 .45 95. 89 .46 1. 19 .19 .60 60B 0 L259

L26 1 74.46 2.03 1.86 1.03 .97 96.08 .65 1.69 .20 .64 6 OB 0 L261 L262 72.46 .03 .03 .64 .60 96.40 .97 2. 53 .28 .91 60R * L262 L27S 71.46 -.97 -.88 .61 .58 95. 40 -.03 -.09 . 18 .59 60R 0 L275

L27 6 73.09 .66 .61 .98 .92 95. 47 .04 .10 .28 .90 60B 0 L27B

L281 72.83 .40 .37 .86 .81 9 5. 43 -.00 -.01 .34 1. 10 60D 0 L281 L285D 72. 17 -.26 -.23 .98 .93 94.92 -.51 -1.34 .39 1.26 60D 0 L285D

L288 72.25 -,ie -. 16 1.01 .95 95.49 .06 . 15 .30 .98 60D 0 L288

L301 72.71 .28 .26 1.06 .99 95.48 .05 . 12 .29 .95 60B 0 L30 1 L305 71.62 -.81 -.74 .60 .57 95.67 .24 .62 .14 .46 60R 0 L305

L30 8 73.38 .95 .87 1.59 1.50 95.70 .27 .70 .36 1.17 6CH 0 L30 8 L31 7 72.24 -.19 -.17 .71 .67 95. 03 -.40 -1.05 .37 1.18 60B 0 L317

L31 8 73.20 .77 .71 1.25 1. 18 95.25 -.18 -.46 .59 1.90 60B 0 L318 L323 72.33 -.10 -.09 1.02 .96 95.51 .08 .20 .31 .99 60W 0 L323

L326 73.98 1.55 1.42 1. 10 1.04 95.42 -.01 -.03 .40 1.28 60B 0 L326

L32 8 71.99 -.44 -.40 1.27 1.20 94.40 -1.03 -2.70 .64 2.72 60B * L328 L339 72.00 -.43 -.39 .47 .44 96.00 .57 1.48 .00 .00 6 OB 0 L339

L34 1 70.97 -1.46 -1.33 .78 .73 95.15 -.28 -.74 .25 .82 60R 0 L341 L349 73.60 1.17 1.08 .84 .79 95.00 -.43 -1. 13 .58 1.86 6 0D 0 L349

L352 71.72 -.71 -.65 .76 .71 95. 16 -.27 -.71 .07 .23 6 OR © L352 L3S4 70.30 -2. 13 -1.95 1.16 1.09 94.70 -.73 - lo 92 .48 1.56 6 OB 0 L3 54 L390 72.92 .49 .45 1.16 1.09 95.34 -.09 -.24 .27 . 86 60B 0 L390 L396 74.50 2.07 1.90 1.08 1.02 95.80 .37 .96 .42 1.36 6 OB 0 L396 L523 72.61 .ie .17 .93 .88 95.64 .21 .54 .20 .65 60R 0 L523 L567 75.65 3.22 2.95 .85 . 80 96.44 1.01 2. 63 .30 .98 60D * L567

L57 1 73.12 .69 .64 1.56 1.47 95.63 .20 .51 .31 1.00 6 OD 0 L571 LS73 72.75 .32 .30 1.09 1. 03 95.60 . 17 .44 .19 .61 60H 0 L573 25
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T60-1 TABLE 1 OPACITY (89% REFLECTANCE BACKING) IN PERCENT

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

SAMPLE SEMI BLEACHED SAMPLE PRINTING TEST D. - 10 LAB B21 65 GEAMS PER SQUARE METER K24 103 GRAMS PER SQUARE METBR

C6DE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

L58 1 72.65 .22 .21 1.47 1.38 95.35 -.08 -.22 .14 .44 6 OB 0 L581 L592 71.24 -1.19 -1.09 1.27 1. 19 94.95 -.48 -1.26 .40 1.30 60W 0 L592 L594 75.02 2.59 2.38 .62 .58 95.52 .09 .23 .26 .53 60D * L594 L597 71.00 -1.43 -1.31 1.33 1.25 95.40 -.03 -.09 .70 2.26 60B 6 L597

L59 9 74.40 1.97 1.81 .66 .62 95.70 .27 .70 .35 1. 13 60B O L599 L673R 72.89 .46 .43 1.41 1.33 95.45 .02 .04 .21 .67 60B 0 L6 73R L673T 71.90 -.53 -.46 .71 .67 95.67 .24 .62 .19 .61 60B 0 L673T

L688 72, 16 -.27 -.24 .66 .62 96. 04 .61 1.58 .26 .89 60B 0 L688

L692 7 1.89 -.54 -.49 1.18 1.11 95.25 -.IS -.46 .14 .46 60D 0 L692

L69 8 71.40 -1.03 -.94 1.47 1.38 94. 84 -.59 -1.55 .30 .96 60D 0 L698

GR. MEAN • 72.43 PERCENT GRAND MEAN - 95.43 PERCENT TEST DETERMINATIONS - 10 SD MEANS • 1. 09 PERCENT SD OF MEANS • .38 PERCENT 75 LABS IN GRAND MEANS AVERAGE SDR B

• o PERCENT AVERAGE SDR - .31 PERCENT

LI 00 72.91 .48 .44 .70 .66 95.59 . 16 .41 .23 .74 60E LI 00 L232 71.50 -.93 -.65 .53 . 50 95.50 .07 . 17 .24 .76 60P L232

L249 73.66 1.23 1.13 .99 .93 95.43 -.00 -.01 .28 .89 60P L249

L256 70.54 -1.89 -1.73 1.14 1. 07 94.72 -.71 -1.66 .40 1.30 6 ON L256

L26 0 72.00 -.43 -.39 .41 .38 95.65 .22 .57 .24 .78 60P L260

L27 7 28.90 -43.53 -39.86 .99 . 94 4.90 -90.53 -236.46 .57 1.83 60P L277

L312 69.70 -2.73 -2.50 .86 .81 94.70 -.73 -1.92 .42 1.36 60P L312 L685B 71. 17 -1.26 -1.15 .96 .90 95.48 .05 . 12 .32 1.03 60P L685B

L687 70.82 -1.61 -1.47 .52 .49 95. 94 .51 1.32 .37 1.21 60P L687 TOTAL NUMBER OF LABORATORIES REPORTING * 84

Best values: B21 72.4 + 1.9 percent

K24 95.4 + 0.6 percent

26
REPORT NO. 59G TAPPI COLLABOHATI VE REFERENCE PROGRAM APRIL 1979 ANALYSIS T60-1 TABLE 2 OPACITY (09* REFLECTANCE BACKING) IN PERCENT

TAPPI STANDARD T42S OS-75, OPACITY OF PAPER (15 DEG, /DIFFUSE , ILLUMINANT A) - B4L TYPE LAB MEANS COORDINATES AVG

CODE F B21 £24 MAJOR MINOR R. SDR VAfi PROPERTY TEST INSTRUMENT -CONDITIONS L277 28,90 4.90 •62.35 -7e.76 1.38 60 P OPACITY ( WHITE BACKING ), PHOTOVOLT

L31 2 69.70 94.70 -2.82 -.12 1.08 60P OPACITY ( WHITE BACKING ), PliOTOVOLT

L3 54 0 70,30 94.70 -2.23 -.25 1.32 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L23 8A 0 70.46 94.66 -2.09 -.32 .85 60R OPACITY (WHITE BACKING), THWING-ALBERT (FORMERLY SRL)

L2 56 70.54 94.72 -2.00 -.28 1.18 60N OPACITY ( WHITE BACKING ), HUNTER

LI 3 1 0 7 0.55 94.57 -2.02 -.43 .61 60 R OPACITY ( WHITE BACKING), THWING-ALBERT (FORMERLY SRL ) L236B 0 70.74 95.08 -1.72 .03 1.32 60 B OPACITY ( WHITE BACKING )

,

BAUSCH LOMB

L687 70.82 95.94 -1.45 .85 .85 60P OPACITY ( WHITE BACK ING )

,

PHOTOVOLT

L34 1 0 70.97 95. IS -1.48 .04 .78 60 R OPACITY ( WHITE BACKING )

,

THWING-ALBERT (FORMERLY SRL ) L228 0 71.00 95. 14 -1.46 .03 .98 60H OPACITY ( WHITE BACKING ), HUYGEN

L166 0 71.00 95. 14 -1.46 .03 .98 60B OPACITY ( WHITE BACKING ), BAUSCH * LOMB

L59 7 0 71.00 95.40 -1.40 .28 1.76 6 OB OPACITY ( WHITE BACKING ), BAUSCH LOMB

LI 23 0 71.12 95.27 -1.31 .13 1.36 60 W OPACITY ( WHITE BACKING ), HUYGEN, DIGITAL

L685B 71.17 95.48 -1.21 .32 .97 60P OPACITY ( WHITE BACKING ), PHOTOVOLT

L59 2 0 71.24 94.95 -1.26 -.21 1.25 60 W OPACITY ( WHITE BACKING ), HUYGEN, DIGITAL

LI 22 0 71.25 95.39 -1. 16 .22 .90 60D OPACITY ( WHITE BACKING ), BNL-2

L226B 0 71.31 95.21 -1. 14 .03 1.21 60 B OPACITY ( WHITE BACKING), BAUSCH LOMB

LI 53 0 71.35 95.50 -1.03 .30 1.27 60 B OPACITY ( WHITE BACKING ), BAUSCH LOMB L243 0 71.35 95.21 -1. 10 .02 1.18 60 B OPACITY ( WHITE BACKING )

,

BAUSCH LOMB

L69 8 0 71.40 94. 84 -l. 13 -.35 1. 17 60 D OPACITY ( WHITE BACK ING )

,

BNL-2

L27 5 0 71.46 95.40 -.95 .18 .58 60R OPACITY ( WHITE BACKING), THWING-ALBERT (FORMERLY SRL ) L232 71.50 95.50 -.89 .27 .63 60P OPACITY ( WHITE BACKING ), PHOTOVOLT

LI 62 0 71.52 95.61 -.84 .37 1.16 60W OPACITY ( WHITE BACKING ), HUYGEN, DIGITAL

L132 0 71.59 95.36 -.83 .11 1.24 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L30 5 0 71.62 9 5.67 -.73 .41 .51 60R OPACITY ( WHITE BACKING ), THWING-ALBERT (FORMERLY SRL )

LI 59 0 71.67 95.67 -.68 .40 .66 60 R OPACITY (WHITE BACKING ), THWING-ALBERT (FORMERLY SRL ) L352 0 71.72 95. 16 -.75 -. 1 1 .47 6 OR OPACITY ( WHITE BACKING ), THWING-ALBERT (FORMERLY SRL ) L173A 0 71.74 95.39 -.68 • 11 1.25 60B OPACITY ( WHITE BACKING), BAUSCH LOMB

L230 0 71.81 95.63 -. 56 .33 1. 18 60 B OPACITY ( WHITE BACKING ), BAUSCH * LOMB

L 1 39 0 71.87 95.08 -.62 -.22 1.37 60 B OPACITY ( WHITE BACKING), BAUSCH LOMB

L692 0 71.89 95.25 -.56 -.06 .79 60D OPACITY ( WHITE BACKING ), BNL-2

L673T 0 71.90 95.67 -.46 .35 .64 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L328 * 71.99 94.40 -.65 -.91 1.96 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L260 72.00 95.65 -.37 .30 .58 60P OPACITY ( WHITE BACKING ), PHOTOVOLT

L339 0 72.00 96.00 -.29 .65 .22 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L241 0 72.05 95. 19 -.42 -.15 1.06 60 B OPACITY ( WHITE BACKING ), BAUSCH » LOMB

L148H 0 72.10 95.21 -.37 -.15 .99 60H OPACITY ( WHITE BACKING ), HUYGEN

LI 2 5 0 72.11 95. 14 -.37 -.22 1.16 60H OPACITY ( WHITE BACKING ), HUYGEN

L688 6 72.16 96.04 -.13 .65 .75 60B OPACITY ( WHITE BACKING ), BAUSCH * LOMB

L2 85D 0 72. 17 94.92 -.36 -.44 1.09 60D OPACITY (WHITE BACKING ), BNL-2 L317 0 72.24 95.03 -. 27 -.35 .93 60 B OPACITY ( WHITE BACKING), BAUSCH LOMB

L288 0 72.25 95.49 -.16 .09 .97 600 OPACITY ( WHITE BACKING ), BNL-2

L32 3 0 72.33 95.51 -.08 .10 .97 60 W OPACITY ( WHITE BACKING), HUYGEN, DIGITAL

L22 5 0 72.35 95.75 -.00 .33 1. 16 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L262 * 72.46 96.40 .25 .94 .76 60S OPACITY ( WHITE BACKING), THWING-ALBERT (FORMERLY SRL)

L121 0 72.48 94.83 -.08 -.60 1.21 60 B OPACITY ( WHITE BACKING ) , BAUSCH * LOMB

L206 6 72 0 49 95.46 .07 .01 .85 60B OPACITY (WHITE BACKING ), BAUSCH LOMB

LI 34 0 72.50 95.60 .11 . 15 1.17 60R OPACITY ( WHITE BACKING ), THWING-ALBERT (FORMERLY SRL ) L21 IS 0 72.53 95.28 .07 -.17 1.03 60S OPACITY ( WHITE BACKING ), THWING-ALBERT (FORMERLY SRL) L523 0 72.61 95.64 .23 .16 .76 60R OPACITY ( WHITE BACKING ), THWING-ALBERT (FORMERLY SRL)

LI 0 5 0 72.64 95.48 .22 -.00 .67 60H OPACITY ( WHITE BACKING ), HUYGEN

L213 0 72.65 95.68 .27 .19 .77 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L581 0 72.65 95.35 .20 -.13 .91 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L21 OB 0 72.66 95.33 .21 -.15 .84 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L30 1 0 72.71 95.48 .29 -.02 .97 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L573 0 72.75 95.60 .35 .09 .82 60H OPACITY ( WHITE BACKING ), HUYGEN

LI 18 0 72.78 95.41 .34 -.10 1.16 60B OPACITY ( WHITE BACKING ), BAUSCH * LOMB L223B 0 72.81 95.49 .39 -.03 .90 60B OPACITY ( WHITE BACKING ), BAUSCH LOMB

L28 1 0 72.83 95.43 .39 -.09 .95 60D OPACITY ( WHITE BACKING ), BNL-2

L254 0 72. e7 95.53 .45 -.00 .88 60H OPACITY ( WHITE BACKING ), HUYGEN L673R 0 72.89 95.45 .46 -.09 1.00 60 B OPACITY ( WHITE BACKING), BAUSCH * LOMB

L100 72.91 95.59 .51 .05 .70 60E OPACITY ( WHITE BACKING ), ZEISS ELREPHO, FMY-C( 10 FILTER

L39 0 0 72.92 95.34 .46 -.20 .98 60B OPACITY ( WHITE BACKING >, HAUSCH LOMB

LI 15 0 73.06 95. 28 .59 -.29 1.09 60B OPACITY ( WHITE BACKING ). BAUSCH LOMB

L278 0 73.09 95.47 .66 -.11 .91 6 OB OPACITY ( WHITE BACKING >, BAUSCH LOMB

27
REPORT NO# 590 TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 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 AVG CODE F BZl £24 MAJOR MINOR R, SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L571 0 73.12 95# 63 .72 .04 1.23 60 D OPACITY < WHITE BACKING ), BNL-2

L3 1 8 0 73.20 9S#25 .72 -.35 1. 54 60 B OPACITY < WHITE BACK ING )

.

BAUSCH LOMB

L 1 57 6 73.30 95* 80 .93 . 17 .92 60 B OPACITY < WHITE BACKING). BAUSCH LOME

LI 52 0 73.36 95.60 .95 -.04 .64 60B OPACITY < WHITE BACKING ). BAUSCB LOMB

.L30 8 0 73.38 95.70 .99 .05 1.33 60H OPACITY (WHITE BACKING ). HUYGEN

L2 1 OD 6 73.38 95.72 .99 .07 .98 60D OPACITY < WHITE BACKING), BNL-2

LI 24 6 73.45 96.01 1. 13 .34 .95 60 B OPACITY < WHITE BACKING), BAUSCH LOMB

L2 59 0 73.49 95. 89 1. 14 .21 .52 60S OPACITY < WHITE BACKING ), BAUSCB LOMB

LI 58 0 73.50 95. 82 1. 13 . 14 .91 60D OPACITY < WHITE BACKING ), BNL-2

L349 0 73.60 95.00 1.05 -.68 1.33 60D OPACITY < WHITB BACKING ), BNL-2

L 1 50 O 73.65 95.95 1.31 .24 .86 60B OPACITY < WHITE BACKING), BAUSCB LOMB

L249 73.66 95.43 1.20 -.27 .91 60P OPACITY < WHITE BACKING ), PHOTOVOLT

L32 6 0 73.98 95.42 1.51 -.35 1. 16 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L599 0 74.40 95.70 1.98 -.17 .87 60B OPACITY < WHITE BACKING ), BAUSCH LOMB

L2^ l 0 74.46 96.08 2. 13 . is .81 6 OB OPACITY < WHITE BACKING), BAUSCB LOMB

L396 0 74.50 95. 80 2. 10 -. 10 1.19 60 B OPACITY < WHITE BACKING), BAUSCH LOMB

L212 0 74.51 95. 85 2. 13 -.05 1.81 6 OB OPACITY (WHITE BACKING ), BAUSCH LOMB

L594 75.02 95.52 2.55 -.49 .71 60D OPACITY ( WHITE BACKING ), BNL-2

L567 * 75.65 96.44 3.37 .27 .89 6 OD OPACITY ( WHITE BACKING ), BNL-2 GMEANS: 72.43 95.43 1.00 95* ELLIPSE: 2. 81 .76 WITH GAMMA * 12 DEGREES

28
OPACITY, B£L TYPE, 89% BACKING

SAMPLE B21 = 72.4 PERCENT SAMPLE K24 = 95.4 PERCENT

PERCENT

29
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS 160-2 TABLE 1 OPACITY (PAPER BACKING) IN PERCENT

TAPPI STANDARD T425 OS-75, OPACITY OF PAPER ( 15 DEG* /DIFFUSE, ILLUMINANT A) - BAL TYPE SAMPLE SEMI BLEACHED SAMPLE PRINTING TEST D. - 10 LAB B21 65 GRAMS PER SQUARE METER K24 103 GRAMS PER SQUARE METER CODE MEAN DEV N.DEV SDR R* SDR MEAN DEV N.DEV SDR R. SDR VAR F LAB

Li i 5 75# 56 -•18 -.25 *66 .64 95*60 -•12 -1*06 .23 .66 60C 0 LI 15

LI i 8 75*94 *19 .27 1*01 • 99 95*77 •05 .41 .35 1.01 60C 6 LI 18 L236B 74 * 86 -*88 -1.20 1*34 1*30 95*66 -*06 -* 54 .52 1.53 60C 0 L236B

L243 76*62 *ee 1.19 a* io a. 07 95* 86 *14 1*19 .28 .80 60C 6 L243

GR* MEAN 75*74 PERCENT GRAND MEAN - 95*72 PERCENT TEST DETERMINATIONS - 10 SD MEANS - *74 PERCENT SD OF MEANS - * 12 PERCENT 4 LABS IN GRAND MEANS AVERAGE SDR • 1*02 PERCENT AVERAGE SDR • .34 PERCENT

TOTAL NUMBER OF LABORATORIES REPORTING - 4

f

REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS 160-2 TABLE 2 OPACITY (PAPER BACKING) IN PERCENT

TAPPI STANDARD T425 0S-7S, OPACITY OF PAPER (15 DEG. /DIFFUSE, ILLUMINANT A) - B4L TYPE LAB MEANS COORDINATES AVG CODE F B2 1 K24 MAJOE MINOS R. SDR VAR PROPERTY- --TEST INSTRUMENT CONDITIONS

L2 36B 0 74*86 95.66 -.89 .05 1*4 1 60C OPACITY ( PAPER BACKING ), BAUSCH L0MB

LI 1 5 0 75*56 95*60 -.20 -.10 .65 60C OPACITY < PAPER BACKING ), BAUSCB LOME

LI 1 8 6 75* 94 95*77 .20 .02 1.00 60C OPACITY < PAPER BACKING ), BAUSCH L0MB

L243 6 76*62 95* 86 .89 .02 .94 60C OPACITY < PAPER BACKING ), BAUSCH LOME GMEANS

:

75.74 95.72 1.00 95% ELLIPSE; 5.63 .51 WITH GAMMA - 7 DEGREES

30
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T60-3 TABLE 1 OPACITY (PAPER BACKING) IN PERCENT

TAPPI :SUGGESTED METHOD T519 OS-78, DIFFUSE OPACITY OF PAPER - ILLUMINANT C , ELREPHO TYPE SAMPLE SEMI BLEACHED SAMPLE PRINTING TEST D. - 1C LAB B21 65 GRAMS PEE 1SGUARE METER K24 103 GRAMS PER SQUARE METER CGDE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB

LlOO 77.26 .29 .45 .65 • 94 96© 30 .07 .58 .20 1. 15 60 J O LlOO

LI 50 76.98 .02 .03 .45 • 65 96© 17 -.06 -.49 .13 .76 60J 0 LI 50 L182E 76.92 -.05 -.07 .94 1 • 36 96. 14 -.09 -o 7 1 .25 1.47 60 J 0 L182E

L233F 76.82 -.15 -.22 .76 1 • 09 96©29 .06 ©50 . 19 1. 10 6 0F 6 L233F L236 76.49 -,4e -.72 .50 • 72 96. 05 -.18 - 1 0 44 .16 .91 60 J 6 L236

L242 77.78 .61 1.23 .89 1 • 28 96.28 .06 ©46 .24 1. 36 60 J 0 L242 L244 76.10 -.e7 -1.31 .75 1 • 08 96.08 -. 15 -1. 19 .14 .81 60F e L244 L250T 76.67 -.30 -.45 .58 ©83 96.21 -.02 —© 14 .29 1.69 6CJ 0 L250T

L309 76.01 -.96 -1.45 .60 © 86 96. 18 -.05 -o 39 .13 .76 60J 0 L309

L360 76.55 -.42 -.63 .75 i • 09 96© 29 .06 ©50 . 19 1.07 6 OF 0 L360 L446 76.65 -.31 -.47 1.12 1. 62 96.31 .08 ©63 .07 .43 60 J 0 L4 46 L575 78.04 1.07 1.63 .52 • 75 96.40 .17 1.39 .08 .47 6CJ 0 L575

L598 77. 24 .27 .42 .53 ©76 96.09 -. 14 -1. 11 .14 .79 60J 0 L598 L678 78. 29 1.32 2.01 .61 • 87 96.49 .26 2© 12 .21 1.20 60J 0 L678

L6 85A 76.68 -.29 -.43 .77 1© 1 0 96© 14 -.09 -.71 .16 1.03 60F 0 L685A

GR0 MEAN • 76.97 PERCENT GRAND MEAN - 96.23 PERCENT TEST DETERMINATIONS - 10 SD MEANS .66 PERCENT SD OF MEANS - • 12 PERCENT 15 LABS IN GRAND MEANS

AVERAGE SDR - .70 PERCENT AVERAGE SDR -

. 17 PERCENT L253C 77.00 .03 .05 .97 i © 40 95© 83 -.40 -3. 21 .13 .77 6 OG L25 3C Lb 26 75.40 -1.57 -2.38 .46 ©66 96. 00 -.23 - 1.84 .00 .00 60Q L6 i>.6 TOTAL NUMBER OF LABORATORIES REPORTING • 17

Best values: B21 77.0 + 1.0 percent

K24 96.3 + 0.2 percent

REPORT NO. 59C TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T60-3 TABLE 2 OPACITY (PAPER BACKING) IN PERCENT

TAPPI SUGGESTED METHOD T519 OS-78, DIFFUSE OPACITY OF PAPER - ILLUMINANT C, ELREPHO TYPE LAB MEANS COORDINATES AVG CODE F B21 K24 MAJOR MINOR R. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L626 75.40 96 © 00 -1. 58 -.02 .33 60Q OPACITY ( PAPER BACKING ), PH6T0V0LT

L309 0 76.01 96. 18 -.95 .08 .61 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, F M Y-C( 10 ) FILTER

L24 4 0 76.10 96.08 -. 88 -.03 .94 60F OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY—C( 10 ) NO TRAP

L23 6 0 76.49 96© 05 -.49 -.11 .82 60J OPACITY ( PAPER BACKING ), ZEISS E1REPHO, FMY-C( 10 ) FILTER

L36 0 0 76.55 96.29 -.40 .12 1.08 60F OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY— C( 10 ) NO TRAP L446 0 76.65 96.31 -.30 .12 1.02 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-C( 10 ) FILTER

L250T 0 76,67 96.21 30 .02 1.26 60 J OPACITY ( PAPER BACKING ). ZEISS ELREPHO, FMY-C( 10 ) FILTER

L665A 0 76.68 96© 14 -.29 -.05 1.06 60F OPACITY ( PAPER BACKING), ZEISS ELREPHO, FMY-C( 10 ) NO TRAP L233F 0 76.82 96 ©29 14 .08 1.10 60 F OPACITY ( PAPER BACKING), ZEISS ELREPHO. FMY-C( 10 ) NO TRAP

L182E 0 76.92 96© 14 -.06 -.08 1.41 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-Cl 10 ) FILTER

LI 50 0 76.98 96.17 .01 -.06 .70 60J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-C( 10 ) FILTER

L25 3C 77.00 95. 83 -.02 -.40 1.08 60G OPACITY ( PAPER BACKING ), GARDNER

L59 8 0 77.24 96. 09 .25 -.17 .77 60J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY—C( 10 ) FILTER

LlOO 0 77.26 96.30 .30 .03 1.05 60J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-C( 10 ) FILTER

L242 0 77.78 96.28 .81 -.05 1.32 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-C( 10 ) FILTER

L57 5 0 78.04 96.40 1.09 .03 .61 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-C( 10 ) FILTER

L678 0 78.29 96.49 1.35 .09 1.04 60 J OPACITY ( PAPER BACKING ), ZEISS ELREPHO, FMY-C( 10 ) FILTER

GMEANS: 76.97 96.23 1.C0 95* : ELLIPSE: 1.90 .25 WITH GAMMA - 7 DEGREES

31
PERCENT

0PAC I T Y * ELREPH0 TYPE , PAPER BACKING

SAMPLE B21 = 76-97 PERCENT SAMPLE K24 - 96-23 PERCENT

LD

OD

cn

LDO

CD

LDCD

CD

LD

LDcn

LD

"d- CD

^ + .X.* NOT IN GRAND MEANS

CM

ANALYSIS T60-3

LU

Q_

CL

CO

”oo o

8

~-

(TjD o

o

o

¥

SAMPLE B21

75.0 76.0 77.0 78.0

PERCENT

79.0

32
REPORT N0. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T65-1 TABLE 1 DIRECTIONAL BLUE REFLECTANCE IN PERCENT

TAPPI STANDARDI T452 OS-77. 'BRIGETNESS' ; MARTIN SWEETS1 ( ACBT A GE ) IS STANDARDi FOR THIS ANALYSIS

SAMPLE PRINTING SAMPLE PRINTING TEST D. • 8 LAB J79 73 GRAMS PER SQUARE METER E79 116 GRAMS PER SQUARE METER

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

LI 22 67.90 .04 .10 .13 .59 95*61 -.17 -. 18 .06 .56 65N 0 L 1 22

LI 32 66.09 .23 .57 .17 .78 96.01 .23 .23 .06 .56 65N 0 L 1 32

LI 58 68. 50 .64 1.61 .29 1.33 97 .21 1.43 1.45 .14 1.19 65N 0 L i 58 L176A 67.12 -.73 -1.84 .28 1.25 94.69 -1.10 -1. 1 1 .04 .31 65A 0 L 1 76 A L190C 67.91 .05 .14 .14 .62 95.80 .01 .01 . 14 1. 24 65A 0 L190C

L21 OM 67.76 -. 10 -.24 .29 1. 33 95.64 -.15 -. 15 .21 1.81 65M 0 L2 10M L210N 67. 86 .CO .01 .15 .68 96.44 .65 .66 . 13 1.14 65N 0 L210N

L21 l 68.20 .34 . 86 .13 .59 93. 59 -2.20 -2. 23 .50 4.38 65N * L2 1 1 L22 5 67.94 .08 .20 .35 1.57 96. 14 .35 .36 .43 3.74 65N 0 L225 L243 67.92 .07 .17 .15 .67 95.92 .14 . 14 .09 .78 65A 0 L243 L259 67.92 .07 .17 .16 .72 95.76 -.02 -.02 • o tn .45 65M 0 L259

L27 5 68.56 .70 1.77 . 16 .72 96.40 .61 .62 .11 .94 65M 0 L275

L28 5 66.76 -1.10 -2.75 .38 1.71 93.09 -2.70 -2.-74 .20 1.72 65N * L285 L288 67.67 -.16 -.46 .10 .47 95.60 -.19 -.19 .05 .47 65N 0 L288

L30 8 68.04 .18 .45 .13 .59 96.37 .59 .60 .09 .78 65N 0 L308 L317 67.75 -.11 -.27 .14 .64 95. 24 -.55 -.56 . 19 1.68 65M 0 L3 17 L523 68.01 .15 .39 .10 .45 95.31 -.47 -.48 .06 .56 65N 0 L523 L565 68. 10 .24 .61 .09 .42 95. 96 .18 .18 . 13 1. 14 6 5A 0 L565

L59 8 67. 42 -.43 -1.09 .55 2.48 96.41 .63 .64 .08 .73 65M 0 L598 L636 68.00 .14 .36 .61 2.75 97.00 1.21 1.23 .00 .00 65M 0 L636 L673R 67.51 -.35 -.87 .24 1.07 96.42 .64 .65 .10 .91 65N 0 L6 73R L692 67.91 .05 .14 . 19 . es 96.67 .89 .90 . 12 1.02 65N 0 L6 92

GR. MEAN - 67.86 PERCENT GRAND MEAN • 95.79 PERCENT TEST DETERMINATIONS - 8 SD MEANS - .40 PERCENT SD OF MEANS • .99 PERCENT 22 LABS IN GRAND MEANS AVERAGE SDR * .22 PERCENT AVERAGE SDR - ,ii PERCENT

LI 0 5 67.44 -.42 -1.06 .13 .59 97.77 1.99 2.02 . 12 1.02 65T L 1 05 L213 68.17 .32 .79 .14 . 63 97.06 1.28 1.29 .20 1.75 65T L213

L223 68. 54 • 6e 1.70 .11 .48 97.84 2.05 2.08 . 1 1 .93 65G L223

L232 69.50 1.64 4.12 .27 1.21 98.00 2.21 2. 25 .00 .00 65P L2 32 L241 68.14 .28 .70 .21 .97 96.44 .65 .66 .12 1.04 651 L24 1 L249 69.12 1.27 3.18 .10 .47 95. 97 . 19 e 19 .07 .62 65P L249 L256 66.94 -.92 -2.31 .14 .64 98.05 2.26 2.30 .13 1. 15 65H L256

L26 0 68.31 .45 1.14 .36 1.65 96.64 .85 . 86 .27 2.38 65P L260 L277 75.00 7.14 17.92 .00 .00 93.00 -2.79 -2.83 .00 .00 65P L277

L27 8 68.00 .14 .36 .00 .00 96. 00 .21 .22 .00 .00 65P L278

L301 68. 19 .33 • 83 .17 .78 97.36 1.58 1.60 .07 .65 65G L301

L3 1 2 70.12 2.27 5.69 .35 1.60 96.00 o 2

1

• 22 .00 .00 65P L312

L321 70.44 2.58 6.47 .18 . 80 99.00 3.21 3. 26 .27 2. 34 65P L321

L32 8 70.00 2. 14 5.37 .00 .00 95.22 -.56 -.57 .32 2. 84 65P L328 L339 70.39 2.53 6.35 .26 1.17 98. 51 2.73 2.77 .18 1.58 65P L339 L442 67.25 -.6 1 -1.53 .09 .42 97.45 1.66 1.69 .12 1.05 65T L442

L56 2 74.00 6. 14 15.41 .00 .00 95.50 -.29 -.29 .00 .00 65P L562

L59 1 66.70 -1. 16 -2.90 .09 .40 98.75 2.97 3. 01 .12 1.08 65H L59 1 L617 70.00 2. 14 5.37 .20 .91 97.00 1.21 1 .23 .11 .94 65G L617

L626 70.06 2.20 5.53 .18 . 80 96.25 .46 .47 .27 2.34 65 P L626 L684 67. 16 -.70 -1.75 .24 1.08 92. 16 -3.62 -3.68 .21 1.81 65H L6 84 L695 70.06 2.20 5.53 .18 . 80 99.69 3.90 3.96 .26 2.27 65P L695

L698 67.84 -.02 -.05 .18 .80 96.70 .91 • 93 .08 .66 651 L698 TOTAL NUMBER OF LABORATORIES REPORTING * 45

Best values: J79 67.9 + 0.7 percent

E79 95.9 + 1.5 percent

33
REPORT N«. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T65-1 TABLE 2 DIRECTIONAL BLUE REFLECTANCE IN PERCENT

TAPPI STANDARD T452 OS-77, ‘BRIGHTNESS 1 ; MARTIN SWEETS { ACBT 4 CE ) IS STANDARD FOR THIS ANALYSIS

LAB MEANS COORDINATES AVG CODE F J79 E79 MAJOR MINOR R. SDR VAF PROPERTY TEST INSTRUMENT CONDITIONS

L59 1 66,70 98.75 2.61 1.82 .74 65H BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER

L2 85 « 66.76 93.09 -2.88 .44 1.71 65N BLUE REFLECTANCE (DIRECTIONAL), TECHNIDYNB/DI ANO/M. S. , S-4 L256 66.94 98.05 1.99 1.42 .09 65 H BLUE REFLECTANCE (DIRECTIONAL), HUNTER

L176A 0 67.12 94.69 -1.24 .46 .78 65A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT).S-2

L684 67. 16 92. 16 •3. 69 -.17 1.45 65H BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER

L442 67.25 97.45 1.48 .98 .73 65T BLUE REFLECTANCE ( DIRECTIONAL), HUNTER D25D2M

LS9 8 0 67.42 96.41 .51 .57 1.61 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEET 9 (GE), S1

LI 05 67.44 97,77 1.84 .87 .81 65T BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2M

L673R 0 67.51 96.42 .54 .49 .99 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. , S-4

L28 8 0 67.67 95.60 -.22 . 13 .47 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. . S-4

L31 7 0 67.75 95.24 -. 56 -.02 1. 16 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE), S-l L210M 0 67.76 95.64 -. 17 .06 1.57 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS ( GE ), S-l L69 8 67.84 96. 70 .88 .23 .73 651 BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2A

L21 ON 0 67.86 96.44 .63 .15 .91 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNB/DIANO/M. S. , S-4 L122 0 67.90 95.61 -. 16 -.08 .58 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. , S-4 L190C 0 67.91 95. 80 .03 -.05 .93 65A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT),S-2

L69 2 0 67.91 96.67 .88 .16 .94 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECBNIDYNE/DIANO/M. S. , S-4 L259 0 67,92 95. 76 -.01 -.07 .59 65 M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE), S-l L243 0 67.92 95.92 . 15 -.03 .73 65A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT),S-2

L22 5 0 67.94 96. 14 .36 .01 2.66 65N BLUE REFLECTANCE ( DIRECTIONAL ). TECHNIDYNE/DIANO/M. S. , S-4 L636 0 68.00 97.00 1.21 .15 1.38 65M BLUE REFLECTANCE ( DIRECTIONAL), MARTIN SWEETS (GE), S-l L278 68.00 96.00 .24 -.09 .00 65 P BLUE REFLECTANCE ( DIRECTIONAL), PHOTOVOLT

L523 0 68.01 95.31 -.42 -.26 .51 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. , S-4 L30 8 0 68.04 96.37 .61 -.04 .68 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. . S-4 L132 0 68.09 96.01 .27 -.17 .67 65N BLUE REFLECTANCE ( DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. . S-4 L565 0 68.10 95.96 .23 -. 19 .78 65A BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (ACBT).S-2

L24 1 68. 14 96.44 .70 12 1.C0 651 BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2A

L213 68. 17 97.06 1.31 -.01 1. 19 65T BLUE REFLECTANCE ( DIRECTIONAL ), HUNTER D25D2M

L30 1 68.19 97.36 1.61 .05 .72 65G BLUE REFLECTANCE ( DIRECTIONAL ), GARDNER

L21 1 « 68.20 93.59 -2.06 -.85 2.49 65N BLUE REFLECTANCE (DIRECTIONAL ), TECHNIDYNE/DIANO/M. S. , S-4

L26 0 68.31 96.64 .93 -. 24 2.02 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTO VOLT

LI 58 0 68.50 97.21 1. 54 -.29 1.26 65N BLUE REFLECTANCE ( DIRECTIONAL ). TECHNIDYNE/DI ANO/M. S. , S-4 L223 68.54 97.84 2. 15 -.18 .70 65G BLUE REFLECTANCE ( DIRECTIONAL ), GARDNER

L275 0 68.56 96.40 .76 -.54 .83 65M BLUE REFLECTANCE ( DIRECTIONAL ), MARTIN SWEETS (GE), S-l L249 69. 1 2 95.97 .48 -l. 19 .54 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L23 2 69.50 98.00 2. 54 -1.08 .61 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L617 70.00 97.00 1.68 -1.80 .92 65G BLUE REFLECTANCE ( DIRECTIONAL ), GARDNER

L32 8 70.00 95.22 -.05 -2.21 1.42 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L695 70.06 99.69 4.31 -I. 23 1. 53 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L626 70.06 96.25 .97 -2.03 1. 57 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L31 2 . 70. 12 96.00 .74 •2.15 .80 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L339 70.39 98.51 3.24 -1.82 1.38 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L321 70.44 99.00 3.73 -1.76 1.57 65P BLUE REFLECTANCB ( DIRECTIONAL ), PHOTOVOLT

L562 74.00 95.50 1. 16 -6.04 .00 65P BLUE REFLECTANCE ( DIRECTIONAL ), PHOTOVOLT

L27 7 75,00 93.00 -1. 04 -7.59 .00 65P BLUE REFLECTANCE ( DIRECTIONAL ). PHOTOVOLT

GMEANS

;

67. 86 95.79 1.00 95% ELLIPSE: 2.74 .89 WITH GAMMA - 76 DEGREES

34
PERCENT

94.0

95.0

96.0

97.0

98-0

99.

BLUE REFLECTANCE , DIRECTIONAL

SAMPLE J79 = 67.9 PERCENT SAMPLE E79 = 95.8 PERCENT

PERCENT

35
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T65-2 TABLE 1

l DIFFUSE BLUE REFLECTANCE IN PERCENT (GLOSS TRAP ) TAPPI SUGGESTED VETBOD T525 SU-72, BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND 0 DEG. OBSERVATION)

SAMPLE PRINTING SAMPLE PRINTING TEST E•« " e LAB J79 73 GRAMS PER SQUARE METER E79 116 GRAMS PER SQUARE METER CODE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB L100 67* 09 -.77 -.92 . 14 1.02 97,03 .68 .97 . 10 1.34 65F 6 L100

LI 2 1 69.52 1.65 1.96 .12 .86 96, 80 .45 .64 . 1 1 1.37 65K 0 LI 2

1

LI 50 66.97 -.89 -1.06 .12 .89 96,83 .48 • 69 .14 1.75 65Q 0 LI 50 L17 0 67.62 -.24 -.29 .05 .33 95, l i -1.24 -1.77 .04 .45 65B 0 LI 70

LI 32 67.89 .02 .03 .09 .67 96, 02 -.33 -.47 .09 1. 15 65F 0 LI 82

L2i OK 69 0 69 1.82 2.17 .16 1. 17 95, 85 -.50 -.72 .10 1.30 65K 0 L2 10K L236 67.86 -.00 -.00 . 19 1.39 97,27 .92 1.32 .06 .83 65F 0 L236

L242 67.44 -.43 -.51 .17 1. 19 96,50 . 15 .22 .09 1. 13 65F 0 L242 L250T 67.96 .10 . 12 .07 .51 96,47 .12 . 18 .07 .92 65F 0 L250T

L280 67.49 -.37 -.44 .09 .67 95,96 -.39 -.56 .08 .97 6 5Q 0 L2 80

L325 66.57 -1.29 -1.53 .26 1. 86 93, 15 -3.20 -4.59 .09 1. 19 65F ft L325

L34 9 67.57 -.30 -.35 .17 1.22 97,07 .72 1.03 .12 1.50 65K 0 L349

L446 67.41 -.45 -.54 o 08 .55 96, 06 -.29 -.42 .02 .28 6 5F 0 L446

L57 3 67.33 -.53 -.63 .11 .78 97,50 1. 15 1.64 .08 .97 65F 0 L573

L57 5 67.75 -.12 -. 14 .11 . 82 95, 08 -1.27 -1.82 . 08 .98 65F 0 L575

L59 8 67.33 -.54 -.64 .07 .53 96,32 -.03 -.04 .07 .91 65K 6 L598

L636 69.4 1 1.54 1.83 .52 3. 74 96,40 *05 . 06 .05 .69 65X 0 L636

L68 0 67.37 -.50 -.59 .09 .67 95,68 -.67 -.96 .04 .45 65K 0 L680

GR, MEAN - 67.87 PERCENT GRAND MEAN • 96,35 PERCENT TEST DETERMINATIONS - 8 SD MEANS - .84 PERCENT SD OF MEANS - #70 PERCENT 17 LABS IN GRAND MEANS

AVEfiAGE SDR - .14 PERCENT AVERAGE SDR ,08 PERCENT

L289 O' •4 •

OD -.05 1 • ©0 .16 1.12 95,09 -1,26 -1.81 • 17 2.22 656 L289 TOTAL NUMBER OF LABORATORIES REPORTING • 19

Best values: J79 67.8 + 1.7 percent

E79 96.4 + 1.2 percent

The following laboratories were omitted from the grand means because of extreme test results: 325.

REPORT NO. S9G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T6S-2 TABLE 2 DIFFUSE BLUE REFLECTANCE IN PERCENT (GLOSS TRAP)

TAPPI SUGGESTED METHOD T525 SU-72, BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND 0 DEG. OBSERVATION)

LAB MEANS COORDINATES AVG C0DE F J79 E79 MAJOR MINOR R, SDR VAR PROPERTY TEST INSTRUMENT- —CONDITIONS

L32 5 ft 66,57 93, 15 -.53 -3.4 1 1,53 65 F DIFFUSE REFLECTANCE. ELREPH0, GL.TRAP, NRC-PTB ABSOLUTE BASE

LI 50 0 66,97 96, 83 -.98 .26 1,32 65Q DIFFUSE REFLECTANCE. ELREPH0, GL, TRAP, ZEISS ABSOLUTE BASE

L100 0 67,09 97,03 -.91 .49 1, 18 65F DIFFUSE REFLECTANCE, ELREPH0, GL, TRAP, NRC-PTB ABSOLUTE BASE

L59 8 0 67,33 96, 32 -.52 -. 15 • 72 65K DIFFUSE REFLECTANCE, ELREPH0

,

GL,TRAP, MG0 (ZEISS) BASE

L573 0 67,33 97,50 -.78 1.00 ,87 65F DIFFUSE REFLECTANCE, ELREPH0, GL, TRAP, NRC-PTB ABSOLUTE BASE

L680 0 67,37 95,68 -.33 -.76 ,56 65K DIFFUSE REFLECTANCE, ELREPH0. GLC TRAP, MG0 (ZEISS) BASE

L446 0 67,41 96,06 -.37 -.38 • 41 65F DIFFUSE REFLECTANCE, ELREPH0, GL© TRAP, NRC-PTB ABSOLUTE BASE

L242 0 67,44 96,50 -.45 .05 1, 16 65F DIFFUSE REFLECTANCE, ELFEPH0, GLeTRAP, NRC-PTB ABSOLUTE BASE

L28 0 0 67,49 95,96 -.27 -.46 ,82 65Q DIFFUSE REFLECTANCE, ELREPH0, GL,TRAP, ZEISS ABSOLUTE BASE

L349 0 67,57 97,07 -.45 .63 1,36 65K DIFFUSE REFLECTANCE. ELREPH0, GL,TRAP, MGO ( ZEISS ) BASE

L l 7 0 a 67,62 95, 1 i .05 -1.26 ,39 65B DIFFUSE REFLECTANCE, ELFEPH0, GL, TRAP, NBS ABSOLUTE BASE

L57 5 0 67,75 95,08 . 17 -1.26 • 90 65F DIFFUSE REFLECTANCE, ELREPH0, GLoTRAP, NRC-PTB ABSOLUTE BASE

L289 67, 8i 95, 09 .24 -1.24 1.67 650 DIFFUSE REFLECTANCE, ELREPH0, GL, TRAP, SPECIFIC CALIBRATION

L236 0 67,86 97,27 -.21 .90 1, 1 1 65F DIFFUSE REFLECTANCE, ELPEPH0, GL, TRAP, NRC-PTB ABSOLUTE BASE

LI 82 0 67 0 89 96,02 .10 -.32 • 91 65F DIFFUSE REFLECTANCE, ELREPH0, GL, TRAP, NPC-PTB ABSOLUTE BASE

L2 50T a 67,96 96,47 .07 .14 • 72 65F DIFFUSE REFLECTANCE, ELREPH6, GL0 TRAP

,

NRC-PTB ABSOLUTE BASE

L636 a 69, 4i 96,40 1.49 .39 2,22 65K DIFFUSE REFLECTANCE, ELREPH0, GL© TRAP

,

MGO (ZEISS) BASE

LI 2 1 a 69,52 96,80 1.51 .81 1.12 65K DIFFUSE REFLECTANCE, ELREPH0, GL,TRAP, MGO ( ZEISS ) BASE

L21 OK 0 69,69 95, 85 1. 89 -.07 1 • 24 65K DIFFUSE REFLECTANCE, ELREPH0, GL, TRAP, MGO (ZEISS) BASE

GMEANS: 67, e7 96, 35 1,00 95% ELLIPSE: 2.38 1.93 WITH GAMMA *-13 DEGREES

36
PERCENT

94.0

95-0

96-0

97.0

98-0

99.

BLUE REFLECTANCE , DIFFUSE, NITH TRAP

SAMPLE J79 = 67.9 PERCENT SAMPLE E79 = 96.4 PERCENT

-J I I I I L_

cn + . X . « N0T IN GRAND MEANS

r~- LU ANALYSIS T65-2

Q_

CL

CO

O

O

O O

O

o

-XT Q

O

J2_

O

O

©

O

Oof

©

SAMPLE U79

65.0 66.0 67.0 68.0

PERCENT

69.0 70.0 71 .0

37
REPORT N0. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T65-3 TABLE 1 DIFFUSE BLUE REFLECTANCE IN PERCENT (NO GLOSS TRAP

J

TAPPI SUGGESTED METHOD T525 SU-72, BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND 0 DEG. OBSERVATION

)

SAMPLE PRINTING SAMPLE PRINTING TEST D. - 8 LAB J79 73 GRAMS PER SQUARE METER E79 116 GRAMS PER SQUARE METER

CODE MEAN DEV N. DEV SDR Ro SDR MEAN DEV N.DEV SDR R© SDR VAR F LAB

LI i 5 67. 05 -1.33 -1.76 • O 0> .39 92© 95 -2© 01 1.59 .12 lo 59 65E 0 LI 15

Li 52 68. 19 -.18 -.24 . 1

1

.77 93© 95 - 1 © 00 -. 79 .05 • 71 65E 0 L152

Li 57 68.78 .40 .53 .10 .72 97© 34 2.39 1. 89 .05 • 71 6 5E 0 LI 57

Li 6 i 69.09 .71 .95 . 10 .72 94© 70 -.26 -.21 .06 • 89 65E 0 L161

Li 7 3

A

68.53 .15 .20 .07 .54 93.82 -1© 14 -.90 .05 ©73 65E 0 L173A L238A 68.77 .39 .52 .38 2. 76 94.33 -.63 -.50 .04 ©48 65E 6 L238A

L241 67.06 -1.32 -1.75 .17 1.22 94© 68 -.28 -.22 .07 1 © 02 6 5E 0 L241 L244 69.28 .90 1.20 .09 .62 95© 84 © 88 .70 .09 1 © 29 65D 0 L244

L25 5 69.61 1.23 1.63 .11 . 83 96. 14 1© 19 .94 .05 • 75 65D 0 L255

L30 5 67.55 -. 83 -1.10 .16 1. 15 93© 09 - 1 c 87 1.48 .11 1© 49 65D 0 L305

L309 68.49 .12 . 15 .26 1. 92 95.71 • 75 .59 .08 1 © 04 65J 0 L3 09 L36 0 68.81 .43 .57 . 14 .98 95.76 ©31 .64 .08 1 o 03 65E 0 L360

L384 68.31 -.07 -.09 .08 .61 95© 97 1.02 o 80 .07 o 97 65S 0 L384 L565 68.36 -.02 -.02 . 13 .95 94.06 -.89 -.71 .09 1 o 26 6 5W 6 L565

Lt> 8 5 67.78 -.59 -.79 . 1 1 . 82 96© 01 1.05 .83 .08 1© 03 6 5E 0 L685

GR* MEAN - 68.38 PERCENT GRAND MEAN 94© 96 PERCENT TEST DETERMINATIONS • 8 SD MEANS » .75 PERCENT SD OF MEANS - 1.27 PERCENT 15 LABS IN GRAND MEANS AVERAGE SDR • .14 PERCENT AVERAGE SDR * .07 PERCENT

TOTAL NUMBER OF LABORATORIES REPORTING - 15

Best values: J79 68.4 + 1.3 percent

E79 95.0 + 1.9 percent

REPORT NO. S9G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T65-3 TABLE 2 DIFFUSE BLUE REFLECTANCE IN PERCENT (NO GLOSS TRAP)

TAPPI SUGGESTED METHOD T525 SU-72, BRIGHTNESS OF PULP (DIFFUSE ILLUMINATION AND 0 DEG. OBSERVATION)

LAB C0DE F MEANS

J79 E79 COORDINATES

MAJOR MINOR AVGR© SDR VAR PROPERTY TEST INSTRUMENT- —CONDITIONS

LI 1 5 0 67.05 92.95 -2© 37 .47 • 99 65 E DIFFUSE REFLECTANCE, ELREPH0, N6 TRAP, MGO (ZEISS) BASE

L2 41 0 67 © 06 94.68 -.76 1.11 1© 12 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MG6 (ZEISS) BASE

L30 5 0 67© 55 93.09 -2© 05 .06 1 © 32 65D DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, NHC-PTB ABSOLUTE

L66 5 0 67© 7 8 96.01 • 75 .95 © 92 65E DIFFUSE REFLECTANCE, ELREPH0, N0 TRAP, MGO (ZEISS) BASE

LI 52 0 68© 19 93.95 -1.00 -.21 • 74 65E DIFFUSE REFLECTANCE, ELREPH0, NO TRAP, MGO (ZEISS) BASE L384 0 68©3 1 95.97 ©92 .45 • 79 65 S DIFFUSE REFLECTANCE, ELREPH6, NO TRAP, ABSOLUTE-UNKNOWN

L56 5 0 68© 36 94.06 83 -.33 i© 10 65W DIFFUSE REFLECTANCE, ELREPH0, NO TRAP. NBS MGO BASE

L309 0 68 ©4 9 95.71 • 74 « 18 1© 48 65 J DIFFUSE REFLECTANCE, ELREPH0, NO TRAP, NBS ABSOLUTE

L173A 0 68© 5 3 93. 82 -I. 00 -.57 ©63 65E DIFFUSE REFLECTANCE, ELREPH0, NO TRAP, MGO ( ZEISS ) BASE

L23 8A 0 68© 77 94.33 -• 43 -.60 1 o 62 65E DIFFUSE REFLECTANCE, ELREPH0, NO TRAP, MGO ( ZEISS ) BASE

LI 57 0 68.78 97.34 2. 36 .53 ©71 65E DIFFUSE REFLECTANCE, ELREPH0 , NO TPAP, MGO (ZEISS) BASE

L36 0 0 68©ei 9 5.76 • 91 -.09 1© 01 65E DIFFUSE REFLECTANCE, ELREPH6, NO TRAP, MGO ( ZEISS ) BASE

LI 6 1 0 69© 09 94, 70 © 03 -.76 ©81 65E DIFFUSE REFLECTANCE, ELREPH0, NO TRAP, MGO (ZEISS) BASE

L24 4 0 69©28 95.84 1© 16 -.50 ©96 65D DIFFUSE REFLECTANCE, ELREPH0, NO TRAP, NHC-PTB ABSOLUTE

L255 0 69.61 96. 14 1© 57 -.69 .79 65D DIFFUSE REFLECTANCE, ELREPH0, NO TRAP. NRC-PTB ABSOLUTE

GMEANS

:

68.38 94© 96 95% ELLIPSE: 3© 85 1.72 WOO

RITE GAMMA - 67 DEGREES

38
PERCENT

BLUE REFLECTANCE, DIFFUSE, N0 TRAP

SRIiPLE J79 = 68.4 PERCENT SAMPLE E79 = 95.0 PERCENT

_L _L

co

co

oo

co

co

CD

co

LDCO

CO

CO

CO

OJ

CO

CO

m +.X.* NOT IN GRRND MEANS

rLlJ ANALYSIS T65-3

Q_

CL

CQ

O 0

o

o

0 o o

o o

o

o

C) o

o

o

SAMPLE U79

63 64 65 66 67 68 69

PERCENT

70 71 72 73

39
REPORT N6. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T75-1 TABLE 1 SPECULAR GLOSS AT 75 DEGREES, IN GLOSS UNITS

TAPPI STANDARD T480 OS-78, SPECULAR GLOSS OF PAPER AND PAPERBOARD AT 75 DEGREES

SAMPLE COATED BOOK SAMPLE COATED PRINTING TEST Do-' 1 0 LAB ESI 118 G BAMS PEE SQUARE METER E91 167 GRAMS PER SQUARE METER

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

LI 2 l 67 # 05 -•99 -.49 1. 19 1. 15 47« 88 -1.92 - 1.04 .54 .63 75H 0 LI 21

LI 22 67.49 -.55 -.27 .83 . eo 49.39 -.41 -.22 .77 .69 75H a L 1 22

LI 28 66.40 -1.64 -.81 1.07 1.03 51.70 1.90 1.03 1.06 1.22 75G a LI 28

LI 34 70.00 1.96 .96 1. IS 1. 1 1 50.50 .70 .38 1.08 1.24 75H 0 LI 34

LI 49 77.60 9.56 4.69 1.26 1.22 62.70 12.90 7.02 1. 16 1.34 75G it L 1 45

LI 53 72.35 4.31 2.11 1.53 1.47 52.95 3. 15 1.71 .60 .69 75G 0 LI 53

L 1 62 72.48 4.44 2. 18 1.74 1.67 53.48 3.68 2.00 .81 .93 75G 0 L 162 LI73A 63.90 -4. 14 -2.03 .57 .55 46 0 00 -3.80 -2. 07 .67 .77 75G 0 L173A

LI 82 67.63 -.41 -.20 .61 .78 48. 66 -.94 -.51 .69 .80 7SH 0 LI 82

LI 89 66. 00 -2.04 -1.00 1.03 .99 50.95 1. 15 .63 .55 .63 75P rt L 1 89 L190C 66.06 -i.9e -.97 1.17 1. 13 48.04 -1.76 -.96 1.14 1.31 75G 0 L190C

L20 6 68. 14 .10 .05 .80 .77 49. 19 -.61 -.33 .98 1. 13 75H e L206

L2I0 72. 26 4.22 2.07 .96 .92 52.69 2.89 1.57 1.03 1.18 75H 0 L2 10 L21 1 66.96 -l.oe -.53 .32 .78 49.66 -.14 08 1.37 1.58 75H 0 L21 1 L2A 2 66.80 -1.24 -.61 1.32 1.27 52.00 2.20 1. 20 .94 1.09 75P 0 L2 12

L21 3 67.83 -•21 -.10 .73 .70 49.35 -.45 -.24 .69 1.02 75H 0 L213 L223 66.25 -1.79 -.88 .95 .91 48.28 -1.52 -.83 1. 16 1.34 75H 0 L223

L230 66.80 -1.24 -.61 1.14 1.09 50.20 .40 .22 .92 1.06 75H e L230

L24 3 69.50 1.46 .72 1.51 1.45 50.00 .20 . 11 .82 .94 75B 0 L243

L253P 70.45 2.41 1. 18 .98 .95 50.09 .29 . 16 1.06 1.22 75G 0 L253P

L255 68.70 4 6 6 .32 .82 .79 50.50 .70 .38 .53 .61 75G 0 L255

L256 68.05 .01 .00 .83 . 80 49.67 -. 13 -o 07 .57 .66 75H 0 L256

L259 70.61 2.5? 1.26 1.36 1.31 51.69 1.89 1.03 1. 19 1.37 75H 0 L259

L262 68.20 .16 .08 .63 .61 50. 10 .30 . 16 1.10 1.27 75K 6 L262

L27 7A 71.76 3.72 1.82 1.60 1.54 52.38 2.58 1.40 .79 .91 75H 0 L277A L277B 71.90 3.86 1.89 .83 . so 53. 20 3.40 1.85 .78 .90 75H 0 L277B

L27 8 66. 18 -1.86 -.91 1.10 1.06 48. 86 -.94 -.51 .55 .63 75G 0 L278

L279 67.40 -.6 4 -.31 1.78 1.71 49.20 -.60 -.33 1.11 1. 28 75G 0 L279

L29 1 68.21 .17 .08 1.07 1. 03 49.97 .17 .09 .99 1. 14 75H 0 L291

L30I 68.38 .34 . 17 .61 .59 49.74 -.06 03 .97 1.12 75H 0 L301

L3 1 7 68.90 .86 .42 .88 .84 49.80 .00 .00 1.32 1.52 75H 0 L317

L32 1 71.35 3.31 1.62 .24 .23 50.85 1.05 .57 .71 .82 75G 0 L32 1 L323 67.77 -.27 -.13 1.19 1. 15 48. eo -1.00 -.54 .71 .82 75H 6 L323 L328 67.77 -.27 -.13 1.03 .99 49.91 .11 . 06 .82 .94 75H 6 L328

L339 67.80 -.24 -.12 .42 .41 53.00 3.20 1.74 .00 .00 75P « L339

L34 9 66. 8 8 -1. 16 -.57 .99 .95 45.65 -4.15 -2. 26 .91 1.05 75H * L349

L372 67.80 -.24 -. 12 .48 .46 50.08 .28 .15 .58 .66 75B 0 L372

L388 60.15 -7.89 -3.87 1.03 .99 48.25 -1.55 -.84 1.57 1.81 75P ft L3 88 L396 63.65 -4.39 -2. 15 3.06 2.94 50.95 1.15 • 63 1.67 1.93 75G X L396

L456 67.02 -1.02 -.50 1.24 1. 19 48.03 -1.77 -•96 .79 .91 75H 0 L456 L483 67. 36 -.68 -.33 1.21 1. 16 48.69 -1. 1 1 -• 60 .58 .67 7 5H 0 L483 L573 65. 80 -2.24 -1 .10 1.40 1.34 49.70 -.10 -• 05 . 82 .95 75G 0 L573

L57 4 65.00 -3.04 -1.49 1.15 1.11 46.90 -2.90 - U 58 .57 .65 75G 0 L574 L583 68.92 .ee .43 .57 .55 51.01 1.21 • 66 1.38 1.59 7 5H 0 L5 83 L592 65.64 -2.40 -1.18 1.29 1.24 47.08 -2.72 -p1 # 46 1. Oo 1.22 75H 0 L592 L598 65.78 -2.26 -1.11 1.56 1. 50 48. 08 -1.72 -.94 .88 1.01 75H 0 L598

L6 4 3 67.25 — . 79 -.39 .87 . 83 49.75 -.05 -© 03 .65 .75 75H 0 L643

L668 66. 15 -1.89 -.93 1.14 1. 09 47. 49 -2.31 - 1 o 26 .79 .91 75G 0 L66 8 L67 0 69. 28 1.24 .61 1.02 .98 5 1.12 1.32 • ?2 .96 1.11 75H 0 L670

L68 8 67.74 -.30 -.15 .66 .64 48. 1 0 -1.70 -•92 .98 1.13 7 5G 0 L688

GR. MEAN • 68.04 GLOSS UNITS GRAND MEAN - 49.80 GLOSS UNITS TEST DETERMINATIONS - 10 SD MEANS 2. 04 GLOSS UNITS SD OF MEANS • 1. 84 GLOSS UNITS 47 LABS IN GRAND MEANS

AVERAGE SDR - a„ 04 GLOSS UNITS AVERAGE SDR • 87 GLOSS UNITS

L250 58.30 -9.74 -4.78 2.54 2# 44 45.40 -4.40 -2.39 o 84 .97 75 Q L250 L288 68.45 .41 .20 • 91 • 87 49.71 -.09 -.05 e 83 .96 751 L288

L697 66. 79 -1.25 -.61 1.24 1* 19 47.43 -2.37 - 1.29 • 56 .65 75X • L697 TOTAL NUMBER OF LABORATORIES SEPORTING " 53

Best values: E51 68+4 gloss units

E91 50+3 gloss units

The following laboratories were omitted from the grand means because of extreme test results: 149,

388.

40
REPORT NO. 59G TAPPI CO LLABORAT I VE REFERENCE PROGRAM APRIL 1979 ANALYSIS T75-1 TABLE 2 SPECULAR GLASS AT 75 DEGREES, IN GLASS UNITS

TAPPI STANDARD T480 AS-78, SPECULAR GLASS AF PAPER AND PAPERBAARD AT 75 DEGREE

3

LAB MEANS CAARDINATES AVG CODE F E51 E91 MAJOR MINAR R.SDR VAR PROPERTY—-TEST INSTRUMENT CONDITIONS

L250 5 8*30 45.40 •10.24 3.08 1.71 750 SPECULAR GLOSS < 75 DEGREE PH0T0V0LT, 20 C, 65* RH L388 0 60. IS 46.25 -6.97 4.0 1 1.40 75 P SPECULAR GLOSS <75 DEGREE ) # PH0T0V0LT

L396 X 63*65 50.95 -2. 56 3.75 2.43 750 SPECULAR GLOSS < 75 DEGREE * * GARDNER

LI 73

A

0 63*90 46. 00 -5.62 -.15 .66 75G SPECULAR GLOSS < 75 DEGREE ' • GARDNER

L574 0 65*00 46.90 -4.20 -.19 .88 75G SPECULAR GLOSS <75 DEGR EE " i GARDNER

L592 0 65*64 47.08 -3.60 -.47 1.23 75H SPECULAR GLOSS < 75 DEGREE HUNTER

L598 0 65.78 48. ce -2.83 .19 1.25 75H SPECULAR GLOSS < 75 DEGREE )» HUNTER

L573 0 65.80 49.70 -1.76 1.40 1.15 75G SPECULAR GLOSS < 75 DEGREE ), GARDNER

LI 89 0 66.00 50.95 -.76 2.21 .81 75P SPECULAR GLOSS < 75 DEGREE * * PH0T0V0LT

L190C 0 66. 06 48. 04 -2.65 -.03 1.22 75G SPECULAR GLOSS <75 DEGREE ' » GARDNER

L66 8 0 66. 15 47.49 -2.94 -.50 1.00 75G SPECULAR GLOSS < 75 DEGREE GARDNER

L278 0 66. 1 8 48. ee -2,02 .51 .84 75G SPECULAR GLOSS < 75 DEGREE ), GARDNER

L223 0 66.25 48.26 -2© 35 .03 1.12 75H SPECULAR GLOSS <75 DEGREE ), HUNTER

LI 2 8 * 66* 40 51.70 .01 2.51 1.13 75G SPECULAR GLOSS <75 DEGREE ), GARDNER

L69 7 66.79 47.43 -2.50 -.97 .92 75X SPECULAR GLOSS <75 DEGREE )s GIVE INSTRUMENT MAKE M0DEL L212 0 66.80 52.00 .51 2.48 1.18 75 P SPECULAR GLOSS < 75 DEGREE PH0T0V0LT

L230 0 66. eo 50.20 -.67 1.12 1.07 75H SPECULAR GLOSS < 75 DEGR EE ) # HUNTER

L34 9 » 66.88 45.65 -3.60 -2.37 1.00 75H SPECULAR GLOSS < 75 DEGREE * * HUNTER

L21 1 0 66*96 49.66 -.91 .61 1. 18 75 H SPECULAR GLOSS <75 DEGREE ) # HUNTER

L456 0 67*02 48. 03 -1.93 -.66 1.05 75H SPECULAR GLOSS <75 DEGREE * * HUNTER

LI 2 1 0 67*05 47. 88 -2.01 -.80 .89 75H SPECULAR GLOSS <75 DEGREE HUNTER

L643 0 67.25 49.75 -.63 .48 .79 75H SPECULAR GLOSS <75 DEGREE *

HUNTER

L4 83 0 67*36 48.69 -1.24 -.39 .92 75H SPECULAR GLOSS < 75 DEGREE ), HUNTER

L279 0 67.40 49.20 -.88 -.03 1.49 75G SPECULAR GLOSS < 75 DEGREE * • GARDNER

LI 22 0 67.49 49. 39 -.68 .05 .84 75H SPECULAR GLOSS <75 DEGREE ‘

HUNTER

L 1 8 2 0 67*63 48. 86 -.93 -.44 .79 75H SPECULAR GLOSS < 75 DEGREE HUNTER

L68 8 0 67.74 48. 10 -1.34 -1.08 .88 75G SPECULAR GLOSS <75 DEGREE ), GARDNER

L328 0 67.77 49.91 -. 13 .26 .97 75H SPECULAR GLOSS < 75 DEGREE *

HUNTER L323 0 67.77 48.80 -.86 -.58 .99 75H SPECULAR GLOSS <7S DEGREE HUNTER

L372 0 67.80 50. 08 .00 .37 .56 75B SPECULAR GLOSS < 75 DEGR EE * 6 BAUSCH L0MB

L339 * 67.80 53.00 1.92 2.57 .20 75P SPECULAR GLOSS <75 DEGREE ' a PH0T0V0LT

L213 0 67.83 49.35 -.45 -.20 . 86 75H SPECULAR GLOSS <75 DEGREE 1 0 HUNTER

L2 56 0 68.05 49.67 -.08 -.10 .73 75H SPECULAR GLOSS <75 DEGREE * 0 HUNTER L206 6 68.14 49. 19 -.33 -.52 .95 75H SPECULAR GLOSS <75 DEGREE * » HUNTER

L262 0 68.20 50.10 .32 .12 .94 75K SPECULAR GLOSS <75 DEGREE >• GAERTNER < K-C TYPE ) L29 1 0 68.21 49.97 .24 .02 1.08 75H SPECULAR GLOSS <75 DEGREE * * HUNTER

L30 1 0 68.36 49.74 .22 -.27 . 85 75H SPECULAR GLOSS < 75 DEGR EE ) # HUNTER

L288 68* 45 49. 71 .2S -.34 .92 751 SPECULAR GLOSS <75 DEGREE HUNTER,, 20 C, 65% RH L255 0 68.70 50.50 .96 . 10 .70 75G SPECULAR GLOSS < 75 DEGREE " a GARDNER

L317 0 68*90 49. 80 .65 -.56 1.18 75H SPECULAR GLOSS < 75 DEGREE >• HUNTER L583 0 68*92 51.01 1.46 .34 1.07 75H SPECULAR GLOSS < 75 DEGREE HUNTER

L67 0 0 69.28 51.12 1. 80 .16 1.04 75H SPECULAR GLOSS <75 DEGREE * * HUNTER

L24 3 0 69.50 50.00 1.23 -.8 1 1.20 75B SPECULAR GLOSS <75 DEGREE BAUSCH L0MB

LI 34 0 70*00 50.50 1.94 -.76 1.18 75K SPECULAR GLOSS <75 DEGREE * 1 HUNTER L253P 0 70.45 50. 09 2.01 -1.36 t.oe 75G SPECULAR GLOSS <75 DEGREE > 0 GARDNER

L259 6 70.6 1 51.69 3. 18 -.26 1.34 75H SPECULAR GLOSS < 75 DEGREE * 1 HUNTER

L32 l 0 71.35 SO. 85 3. 19 -1.38 .52 75G SPECULAR GLOSS < 75 DEGREE GARDNER

L277A 0 71.76 52. 38 4.50 -.49 1.23 75H SPECULAR GLOSS < 75 DEGREE * 1 HUNTER

L277B 0 71.90 53. 20 5. 14 .03 . 85 75 H SPECULAR GLOSS < 75 DEGREE ) ( HUNTER

L2 10 0 72.26 52.69 5. 06 -.59 1.05 75H SPECULAR GLOSS < 75 DEGREE ' * HUNTER

LI 53 0 72.35 52.95 5.32 -.45 1.08 75G SPECULAR GLOSS <75 DEGREE " a GARDNER

LI 62 0 72.48 53. 48 5. 76 -.14 1.30 75G SPECULAR GLOSS <75 DEGREE GARDNER

LI 49 0 77*60 62.70 15.68 3.46 1.28 75G SPECULAR GLOSS <75 DEGREE * * GARDNER

GMEANS: 66.04 49.80

95* ELLIPSE: 6.56

1.00 2.50 WITH GAMMA - 41 DEGREES

41
GL0SS

UNITS

SPECULRR GL0SS , 75 DEGREE

SAMPLE E51 - 68-0 GLOSS UNITS SAMPLE E91 = 49.8 GLOSS UNITS

42
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T90-1 TABLE 1 THICKNESS (CALIPER), THOUSANDTHS OF AN INCH TAPPI STANDARD T4 1 1 OS-76 SAMPLE PRINTING SAMPLE PRINTING TEST D. - 10 LAB J83 73 GRAMS PER SQUARE METER J66 93 GRAMS PER SQUARE METER

CODE MEAN DEV N. DEV SDR R. SDR MEAN DEV N. DEV SDR R. SDR VAR F LAB L100 2.810 .098 1.42 . 028 .70 6.451 . 162 1.36 .040 .34 90V O LI 00

LI 0 5 2.771 . 059 .85 . 029 .73 6.438 • 149 1. 26 . 100 . 84 90 Q 0 LI 05

LI 1 8 2.697 -.015 -.22 o 037 .92 6.332 . 043 .36 .127 1.06 90Q o LI 18

LI 22 2.760 .04e .69 .057 1.43 6o 296 . 007 . 06 . 126 1.06 90V 0 L 1 22 L123F 2. 865 . 153 2.21 . 034 .84 6.510 .221 1.88 . 188 1.57 90F 0 L123F

LI 25 2.602 -.110 -1.60 .051 1. 26 6.047 •.242 -2.06 . 107 .89 90T 0 L 1 25

LI 2 8 2.712 -.000 -.00 .029 .73 6.228 -.061 -.52 • 095 .79 90T o L 1 28

LI 4 1 2.686 -.026 -.38 .040 1.01 6. 173 -.116 -.99 .124 1.04 90T o L 1 4 1 LI 53 2. 762 .070 1.0 1 .034 .84 6. 144 -.145 - 1. 23 .099 . 83 90T * LI 53

Li 5

8

2.710 -»C02 -.03 .032 .79 6.390 • 101 . 86 o 057 .47 90T 0 L 1 58 L159 2. 717 .cos .07 . 023 .58 6.377 .088 .75 .093 .77 9 0T 0 LI 59

LI 62 2.680 -.032 -.47 . 063 1. 58 6 0 240 -. 049 -.42 . 143 1.19 90D 0 L 162

Li 66 2.653 -.059 -.86 . 032 .80 6.299 .010 . 08 .078 .65 90T 0 LI 66

Li 7 3h 2. 786 .07 4 1.07 . 047 1.17 6.370 .081 .69 • 086 .71 90F 0 L173B

Li 74 2.700 -.012 -. 18 O 047 1. 18 6.280 -. 009 -.08 • 215 1.79 9 0T 0 LI 74

L 1 82 2.723 .010 .15 . 051 1.27 6.308 .019 . IS • 109 .91 90L 0 LI 82

Li 83 2.744 . 032 .46 .024 .60 6.425 .136 1.15 .071 .60 9CT 0 LI 83

Li 9 OC 2.640 -. 072 -1.05 . 052 1.29 6. 140 -. 149 - 1. 27 • 117 .98 90T 0 L190C

L203A 2.600 -.112 -1.62 .053 1.32 6.125 -. 164 -1.39 .177 1.48 90T 0 L203A

L203C 2.76 0 .048 .69 .074 1.84 6 0 360 .071 .60 • 117 .98 90 T 0 L203C

L2 1 2 2.785 .073 1.05 .034 o 84 6.470 . 181 1.54 .103 . 86 9 0T 0 L21 2 L21

3

2.590 -. 122 -1.77 .032 .79 6.360 .071 .60 .117 .98 90T « L2 13 L223 2.690 -.022 -.32 .042 1.06 6.254 -.035 -.30 . 116 .97 90V 0 L223 L228 2.740 .028 .40 .061 1. 53 6.300 .01 1 .09 • 131 1. 10 90T 0 L228

L233 2.724 • 012 .17 .028 .70 6.323 .034 .29 o 155 1. 29 90Q 0 L233 L238A 2.642 -.070 -1.02 .027 .68 6. 178 -.111 -.94 . 180 1.50 90T o L238A

L24 1 2.895 . 183 2.65 .016 .39 6.275 -.014 12 • 142 1.18 90T X L24 1 L2426 2.752 .040 .58 .039 .98 6. 198 -.091 -.77 . 135 1. 12 900 0 L2426 L242P 2.706 -.007 -. 10 .031 .78 6.207 -.082 -.70 .088 .73 90 P 0 L242P

L249 2.648 -.064 -.93 .034 . 86 6.286 -.003 -.03 .070 .59 90T 0 L249 L259 2.645 -.067 -.97 . 035 .87 6.038 -.251 -2. 13 .206 1.72 90T 0 L2 59 L26 0 2.664 -.048 -.70 .020 .50 6.362 . 073 .62 .033 .27 90T 0 L260

L261 2.760 .04 8 .69 .024 .61 6.458 . 169 1.43 . 049 .41 90T 0 L261 L262 2.695 -.017 -.25 .028 .71 6.120 -. 169 -1.44 . 132 1.10 90T 0 L262

L2 8 5 2.610 -. 102 -1.48 .032 .79 6.300 . 01 1 .09 . 094 .79 9 0T 0 L285

L29 i 2. 850 . 138 r\) • o o . 053 1.32 6.380 .091 .77 . 193 1.61 9 0T 0 L291 L305 2.720 . 008 .n . 042 1.05 6.330 . 041 .35 • 114 .95 90T 0 L305 L309 2.650 -. 062 -.90 .053 1.32 6. 140 -. 149 - 1.27 O 184 1.53 90T 0 L309

L318 2.625 -.087 -1.26 .042 1. 06 6. 185 -. 104 -. 88 . 153 1.28 90T 0 L3 18 L32 0 .003 -2.709 -39.24 .000 .00 .006 -6.283 - 53.36 .000 .00 90T u L320 L323 2.686 -.026 -.38 .024 . 59 6.296 .007 .06 • 145 1.21 90T 0 L323 L324 2. 740 . 028 .40 .039 .98 6. 265 -.024 -.20 .04 1 .34 90T 0 L324 L326 2.765 .053 .77 .047 l.i e 6.515 .226 1.92 .078 .65 90T 0 L326

L32 8 2.706 -.006 -.09 .055 1.36 6.300 .01 1 .09 .081 .67 90T o L328

L331 2. 769 .077 1.11 .042 1. 04 6.216 -.073 -.62 • 062 .52 90T 0 L331 L339 2.660 -.052 -.76 . 032 .79 6.245 -. 044 -.37 © 171 1.42 90T 0 L339

L341 2. 780 . 068 .98 o 039 .98 6.436 • 14T lo 25 . 138 1. 15 90T 0 L34 1 L352 2.720 .008 . 1 1 o 032 . 80 6.343 o 054 .46 .068 .57 90Q 0 L352

L356 2.684 -. 02 e -.41 .050 1.26 6.240 -.049 -.42 . 188 1.57 90T 0 L356 L358 2.702 -.010 -.15 .038 .95 6.291 . 002 .02 • 119 .99 90T 0 L358

L376 2.800 .oee 1.27 .053 1.32 6.370 .081 .69 . 134 1. 12 90T 0 L376

L382 2.790 .078 1.13 .057 1.42 6.320 .031 .26 • 220 1.84 90T 0 L382

L39 0 2. 646 • 134 1.94 .028 .71 6.504 .215 1. 83 • 047 .39 90T o L39C L442 2.816 .104 1.50 .023 .57 6.548 .259 2.20 • 091 .76 90V 0 L4 42 L556 2.770 .05e .64 .042 1. 05 6.265 -.024 -.20 . 180 1.50 90T 0 L556 L557 2.620 -.092 -1.33 .042 1.05 6. 140 -. 149 -1.27 .084 .70 90T o L557

L56 7 2.672 -.040 -.58 .060 1.50 6. 269 -.020 -.17 • 153 1.27 90V o L567

L571 2.710 -.002 -.03 .074 1.84 6. 180 -.109 -.93 . 193 1.61 90V 0 L571 L574 2.650 -.062 -.90 .034 . 86 6.232 -.057 -.48 • 125 1.04 90V 0 L574

L575 2.720 .008 . 1 1 .023 . 58 6.207 -.082 -.70 • 046 .38 90T 0 L575

L58 i 2,760 .04e .69 .052 1. 29 6.420 . 131 1. 1 1 • 114 .95 9 0T o L581 L585 2.530 -. 162 -2.64 .048 1.21 6.210 -.079 -.67 .179 1.50 90T * L565 L626 2.610 -. 102 -1.48 .011 .26 6. 126 -.161 -1.37 • 156 1.30 90T o L6 26 L679 2.710 -.002 -.03 .046 1.15 6.130 -. 159 -1.35 • 160 1.34 90T o L679

L69 3 2.737 .025 .36 .032 .79 6.319 .030 .25 .089 . 75 90T o L693

GR 0 MEAN - 2.712 MILS GRAND MEAN - 6.289 MILS TEST DETERMINATIONS - 10 SD MEAN - . 069 MILS SD OF MEANS - .118 MILS 63 LABS IN GRAND MEANS AVERAGE SDR • 040 MILS AVERAGE SDR - . 120 MILS

CRo MEA - 68.89 MICROMETER GRAND MEAN -159.74 MICROMETER 43
REPORT N6„ 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1579 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 J83 73 GSAMS PEP SQUARE METER J66 93 GRAMS PEP SQUARE METER

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

LI 06 27# 100 24*388 353.23 *994 24. S3 60.000 53.711 456. 1

6

.000 .00 90C LI 06

LI 85 2*660 -.052 -.76 .038 .54 6. 136 -* 153 - 1.30 . 103 .86 90B Lies L203B 2* 540 172 -2.49 * 052 1.29 6.110 -.179 -1.52 . 129 1.07 90C L203B

L243 2*684 -* 028 -.41 * 032 .61 6. 138 -• 151 - 1. 28 .059 .49 90S L243

L344 2* 587 125 - 1.81 * 036 .90 6. 164 -.125 - 1. 06 . 184 1.54 90U L344 L396M 2* 700 -* 012 -.18 * 033 . 83 6. 035 -.254 -2. 16 . 145 1.21 90S L396M L563 2*730 9 01 8 .26 .048 1.21 6.320 • 031 • 26 .123 1.03 90U L563

L576 2*640 -*072 -1.05 * 070 1.75 6.590 .301 2*56 . 137 1.14 90C L576

L6 84 2*690 022 -«32 * 032 .79 6.250 -.039 -.33 .097 .81 90U L6 84 TOTAL NUMBER OF LABORATORIES REPORTING - 74

Best values: J83 2.72 + 0.11 mils

J66 6.29 + 0.18 mils

Data from the following laboratories appear to be

off by a multiplicative factor: 320.

44
REPORT NO. 59G TAPPI COLLABORATI VE REFERENCE PROGRAM APRIL 1979 ANALYSIS T90-1 TABLE 2 THICKNESS (CALIPER), THOUSANDTHS OF AN INCH

TAPPI STANDARD T41 1 69-76 LAB MEANS COORDINATES AVG CODE F J83 J66 MAJOR MINOR R. SDR VAR PROPERTY- —TEST INSTRUMENT- --CONDITIONS

L32 0 # .003 • 006 -6.840 -. 150 .00 90T THICKNESS ( CALIPER ), TMI. MOTOR DRIVEN

L585 * 2.530 6.210 -.146 . 133 1.35 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L203B 2.540 6* 110 -.234 .082 1. 18 90C THICKNESS ( CALIPER), CADY, HAND DRIVBN

L344 2. 58 7 6* 164 -.166 .062 1.22 90U THICKNESS ( CALIPER ). TMI, HAND DRIVEN

L2 1

3

# 2. 59 0 6.360 .014 .141 .88 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L203A 0 2.600 6« 125 -.196 .034 1.40 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

LI 25 0 2.602 6. 047 -.266 -.001 1.08 9 0T THICKNESS < CALIPER ), TMI, MOTOR DRIVEN

L626 0 2.610 6.128 -. 1 89 .026 .78 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L285 0 2. 610 6.300 -.033 .097 .79 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L557 0 2.620 6.140 -.174 .022 .88 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L3I 8 0 2.625 6. 185 -.131 .036 1.17 90T THICKNESS (CALIPER), TMI, MOTOR DRIVEN

L576 2.640 6.590 .244 . 191 1.44 90C THICKNESS ( CALIPER ), CADY. HAND DRIVEN

LI 9 OC 0 2.640 6.140 -.166 .004 1.13 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L23 8A 0 2,642 6. 1 78 -.130 .016 1.09 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L259 0 2.645 6. 03e -.256 -.043 1.30 90T THICKNESS ( CALIPER), TMI. MOTOR DRIVEN

L249 0 2.648 6.286 -.029 .057 .72 90T THICKNESS (CALIPER), TMI, MOTOR DRIVEN

L574 0 2.650 6.232 -.078 .033 .95 90V THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN, DIGITIZED

L3 09 0 2.650 6.140 -.161 -.005 1.43 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 66 0 2.653 6.299 -.016 .058 .72 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

Lies 2.66 0 6. 136 -.161 -.016 .90 90B THICKNESS ( CALIPER ), AMTHOR, HAND DRIVEN

L339 0 2.660 6.245 -.062 .029 1.11 90T THICKNESS (CALIPER), TMI, MOTOR DRIVEN

L26 0 0 2.664 6.362 .046 .074 .39 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L567 0 2.672 6.269 -.035 .028 1.39 90V THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN, DIGITIZED

LI 62 0 2.680 6.240 -.058 .009 1.39 90D THICKNESS ( CALIPER ), CADY, MOTOR DRIVEN

L243 2.684 6. 138 -.149 -.037 .65 90S THICKNESS ( CALIPER), SCHOPPER , HAND DRIVEN L356 0 2.684 6.240 -.056 .005 1.41 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

LI 41 0 2.686 6. 173 -.1 16 -.024 1.02 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L323 0 2.686 6.296 -.005 .027 .90 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L684 2.690 6.250 -.045 .004 .80 90U THICKNESS (CALIPER), TMI, HAND DRIVEN

L223 0 2.690 6.254 -.041 .006 1.01 90V THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN, DIGITIZED

L262 0 2.695 6. 120 -.161 -.055 .90 90T THICKNESS (CALIPER), TMI, MOTOR DRIVEN

LI 1 8 0 2.69 7 6.332 .033 .032 .99 90Q THICKNESS ( CALIPER ), EMVEC6. MOTOR DRIVEN

L396M 2.700 6.035 -.236 -.095 1.02 90S THICKNESS ( CALIPER), SCHOPPER , HAND DRIVEN

LI 74 0 2.700 6.280 -.013 .007 1.49 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L358 0 2.702 6.291 -.002 .010 .97 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN L242P 0 2.706 6.207 -.077 -.028 .76 9CP THICKNESS ( CALIPER), MESSMER, MOTOR DRIVEN, ISO R534 L328 0 2.706 6.300 .007 .010 1. 02 90T THICKNESS ( CALIPER ), TMI. MOTOR DRIVEN

L679 0 2.71 0 6. 130 -.146 -.064 1.24 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L57

1

0 2.710 6. 180 -. 100 -.043 1.73 90V THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN. DIGITIZED

LI 58 0 2.710 6.390 .091 • 044 .63 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 2

8

0 2.712 6.228 -.056 -.025 .76 90T THICKNESS ( CALIPER), TMI. MOTOR DRIVEN

LI 59 0 2.717 6.377 .082 .032 .68 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L575 0 2.720 6.207 -.071 -.041 .48 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

L352 0 2.720 6.343 .052 .015 .68 90Q THICKNESS ( CALIPER ), EMVEC6, MOTOR DRIVEN

L305 0 2.720 6.330 .040 .010 1.00 90T THICKNESS ( CALIPER ), TMI. MOTOR DRIVEN

L 1 8 2 0 2.723 6.308 .021 -.002 1.09 90L THICKNESS (CALIPER), L W, MOTOR DRIVEN

L233 0 2.724 6.323 .036 .003 .99 90Q THICKNESS ( CALIPER ), EMVEC6. MOTOR DRIVEN

L563 2.730 6.320 .036 -.003 1.12 90U THICKNESS ( CALIPER ), TMI, HAND DRIVEN

L693 0 2.737 6.319 .038 -.010 .77 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L228 0 2.740 6.300 .022 -.021 1.31 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L324 0 2.740 6.265 -.010 -.035 .66 90T THICKNESS ( CALIPER), TMI, MOTOR DRIVEN

LI 83 0 2.744 6.425 .137 .028 .60 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L2420 0 2.752 6. 198 -.066 -.074 1.05 900 THICKNESS ( CALIPER), MESSMER, MOTOR DRIVEN. BS3983

L26 1 0 2.760 6.45e .174 .027 .51 9 0T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 22 0 2.760 6.296 .026 -.041 1.24 90V THICKNESS ( CALIPER), TMI, MOTOR DRIVEN, DIGITIZED

L2 03C 0 2.76 0 6.360 .084 -.014 1.41 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L58 1 0 2.760 6.420 .139 .01 1 1.12 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L326 e 2.765 6.515 .227 .046 .92 90T THICKNESS ( CALIPER ). TMI, MOTOR DRIVBN

L556 0 2.770 6.265 .002 -.063 1.28 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 05 0 2.771 6.438 .160 • coe .78 90Q THICKNESS ( CALIPER ), EMVECO, MOTOR DRIVEN

L34 1 0 2.780 6.4 36 .162 -.001 1.06 90T THICKNESS (CALIPER), TMI, MOTOR DRIVEN

LI 53 e 2.782 6. 144 -.103 -.124 .83 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L212 0 2.785 6.470 .195 . 009 .85 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L173B 0 2.786 6.370 .104 -.033 .94 90F THICKNESS ( CALIPER ). FEDERAL, MOTOR DRIVEN

L33 1 0 2.789 6.216 -.034 -.10 0 .78 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

45
REPORT NO. 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T90-1 TABLE 2 THICKNESS (CALIPER), THOUSANDTHS OF AN INCH

TAPPI STANDARD T411 OS-76 LAB C6DE F MEANS

J 83 J66 COORDINATESMAJOR MINOR

AVG

R. SDR VAP PROPERTY TEST INSTRUMENT- --CONDITIONS

L382 2.790 6.320 .061 -.058 1.63 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

L376 6 2.800 6.370 .110 -.046 1.22 90T THICKNESS ( CALIPER ), TMI, MOTOR DRIVEN

LI 00 6 2.610 6.451 .168 -.022 .52 90V THICKNESS ( CALIPER), TMI, MOTOR DRIVEN, DIGITIZED

L442 0 2.816 6.54e .279 .013 .66 90V THICKNESS ( CALIPBR ), TMI, MOTOR DRIVEN, DIGITIZED

L3S 0 e 2. 846 6.504 .251 -.032 .55 90T THICKNESS ( CALIPBR ), TMI. MOTOR DRIVEN

L291 6 2. 850 6.380 . 140 -.067 1.46 90T THICKNESS (CALIPER), TMI. MOTOR DRIVEN

L123F d 2. 865 6.510 .264 -.047 1.21 90F THICKNESS ( CALIPER ), FEDERAL, MOTOR DRIVEN

L24 1 X 2. 89 5 6.275 .063 -.172 .79 90T THICKNESS ( CALIPER ). TMI, MOTOR DRIVEN

LI 06 27. 100 60. 000 5 € .966 .172 12.41 90C THICKNESS ( CALIPER ), CADY, BAND DRIVEN

GMEANS: 2.712 6.289

95* ELLIPSE: .323 . 123

1.00 WITH GAMMA * 65 DEGREES

46
MICROMETER

150

1

54

158

162

1

66

THICKNESS (CALIPER)

o

o- -

SAMPLE J83 = 2.71 MILS SAMPLE J66 = 6.29 MILS

SAMPLE J83 - 68.9 M I CR0METER SAMPLE J66 = 159-7 MICROMETER

MILS

60 62 64 66 68 70 72 74 76 78 80

MICROMETER

47
REPORT NO© 59G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1979 ANALYSIS T95-1 TABLE 1 GRAMMAGE (MASS PER UNIT AREA)

TAPPI STANDARD T4 1 0 OS-68 SAMPLE MANILA ENVELOPE SAMPLE OFFSET ENAMEL COATED TEST E>• - 10 LAB D33 1 18 G SAMS PER SQUARE METER D34 1 17 GRAMS PER SQUARE METER CODE MEAN DEV N.DEV SDR R. SDR MEAN DEV N .DEV SDR R. SDR VAR F LAB

LI 00 1 18© A 0 .31 .57 l. 10 . 82 119. 10 .41 .49 .74 .86 95C O Li 00

LI 2 1 1 16. 88 -.91 1.66 1 • 03 o 77 1 17. 07 -1.62 1.93 1.04 1.20 95B 0 LI 21

LI 62 1 18. 08 .29 .54 lo9l 1. 43 119.93 1.24 1.48 1.17 1.36 95K 6 L 1 62

L21 3 1 16.85 -.93 1.71 1 • 73 1.29 1 18. 04 -.65 -.78 .74 .85 95F 0 L213

L233 1 18.09 .30 .56 1.55 1. 16 117.20 -1.49 1.78 .58 .67 95T 0 L233

L249 1 23. 86 6.07 11.14 1.01 .75 116.48 -.21 -.25 .64 .74 951 ft L249

L280 1 17.65 -.14 -.25 1.72 1. 29 119.22 .53 .63 1.15 1.34 95T 0 L280 L305 1 18.64 • 65 1.57 1.51 1.13 1 18. 38 -.31 -.37 .74 . 86 95T 0 L305

L33 9 1 17. 70 -.09 -. 16 .48 .36 119.00 .31 .37 .00 .00 95T 0 L339

L34 2 1 17.83 .04 .07 1.60 1. 19 1 19.58 .89 1.07 .44 .51 95C 0 L342

L344 1 18.33 .54 1.00 .33 .25 119. 13 .44 .52 .13 .15 95T 0 L344 L442 1 17.78 -.01 -.01 .81 .61 118.46 -.23 -.28 .28 .33 95K 0 L442 L557 1 17.31 -.48 -.87 2.06 1. 54 1 1 e.58 1

1

-. 13 1.93 2.24 95C 0 L557 L559 1 18. 13 .34 .63 1.5-6 1.17 1 1 8. 99 .30 . 36 .84 .97 95K 6 L559

LSl/7 1 16.78 -1.01 1.85 1.01 .75 117.45 -1.24 1. 48 1.62 1.88 95E 0 L567

L57 * 1 17.40 -.39 -.71 1.61 1. 20 1 18.05 -.64 -.77 2.29 2.66 95P 0 L57

1

L574 1 17. 73 -.06 -.10 1.23 .92 119.70 1.01 1.21 1.47 1 o 7

1

95D 0 L574 L597 1 18. 16 .37 .68 1.24 .93 1 19. 34 .65 .78 .55 .64 95C 0 L597 L6ee 1 17.91 .12 .23 2.23 1.67 1 1 8© 46 -.23 -.28 .44 .51 9 5T 0 L6 88 L693 1 18.60 .81 1.49 .67 .50 1 19. 44 .75 .90 .22 .25 95G 0 L693

GR0 MEAN -1 17.79 G/SC .METER GRAND MEAN -118.69 G/SQ. METER TEST DETERMINATIONS - 10 SD MEANS • . 55 G/SQ.METEH SD OF MEANS - . 84 G/SQ. METER 19 LABS IN GRAND MEANS

AVESAGE: sdr • 1.34 G/SQ. METER AVERAGE SDR *

. 86 G/SQ. METER

TOTAL NUMBER OF LABORATORIES REPORTING - 20

Best values: D33 117.8 + 1.0 grams per square meter

D34 118.7 + 1.3 grams per square meter

The following laboratories were omitted from the grand means because of extreme test results: 249.

REPOST NO. 59G TAPPI COLLABORATI VE REFERENCE PR6GFAM APRIL 1979 ANALYSIS T95-1 TABLE 2 GRAMMAGE (MASS PER UNIT AREA)

TAPPI STANDARD T4 1 0 OS-68 LAB MEANS COORDINATES AVG CODE F D33 D34 MAJOR MiNes R. SDR VAR PROPERTY TEST INSTRUMENT CONDITIONS

L56 7 0 1 16.78 117.45 -1. 55 *38 1.32 95E BASIS WEIGHT ( GRAMMAGE ), GUILLOTINE TYPE CUTTER

L213 0 1 16. 85 1 1 8. 04 -.99 .56 1.07 95F BASIS WEIGHT ( GRAMMAGE ), FOUR-SQUARE CUTTER

LI 2 1 0 1 16.88 i 17. 07 - 1. 85 . 13 .99 95B BASIS WEIGHT ( GRAMMAGE >, CONCORA CUTTER

L557 0 1 17.31 118.58 -.30 * 38 1.89 95 C BASIS WEIGHT ( GRAMMAGE ). CUTTING BOARD

L57 l 0 1 17.40 113.05 -.75 .07 1.93 95P BASIS WEIGHT ( GRAMMAGE ), PRODUCTION REAM CUTTER

L28 0 0 117.65 1 19.22 .42 .35 1.32 95T BASIS WEIGHT (GRAMMAGE ), TEMPLATE CUT

1339 0 1 17.70 119.00 .24 .21 . 18 95T BASIS WEIGHT ( GRAMMAGE ), TEMPLATE CUT

L57 4 0 l 17.73 119. 70 . 89 . 48 1.31 95D BASIS WEIGHT ( GRAMMAGE ), DIE CUT

L442 0 1 17.78 118.46 -.21 -.OS .47 95K BASIS WEIGHT ( GRAMMAGE ), WEIGHED AS RECEIVED

L342 0 1 17.83 1 19. 58 .82 .35 . 85 95C BASIS WEIGHT ( GRAMMAGE ), CUTTING BOARD

L68 8 0 1 17.91 118.46 16 -.21 1.09 95 T BASIS WEIGHT ( GRAMMAGE )

,

TEMPLATE CUT

LA 62 0 118.08 119.93 1.24 .27 1.39 95K BASIS WEIGHT (GRAMMAGE ), WEIGHED AS RECEIVED

L23 3 0 1 18.09 1 17. 20 - 1. 22 -.91 .92 95T BASIS WEIGHT ( GRAMMAGE ), TEMPLATE CUT L100 0 118.10 119. 10 o 50 1 1 • 84 95C BASIS WEIGHT ( GRAMMAGE ), CUTTING BOARD

L559 0 118. 13 l 1 8. 99 ©42 1 8 1.07 95K BASIS WEIGHT ( GRAMMAGE ), WEIGHED AS RECEIVED

L597 0 118.16 1 19.34 .75 -.06 .78 95 C BASIS WEIGHT (GRAMMAGE ), CUTTING BOARD

1344 0 1 18.33 119. 13 .63 -.30 o 2 0 95T BASIS WEIGHT ( GRAMMAGE ), TEMPLATE CUT

L693 0 118.60 1 19.44 1. 03 -.4 1 .38 95G BASIS WEIGHT ( GRAMMAGE ), PRECISION CUTTER

1305 0 1 18.64 1 16. 38 ©09 -.90 1.00 95T BASIS WEIGHT ( GRAMMAGE ) , TEMPLATE CUT

L24 9 ft 123.86 118.48 2.42 -5. 58 .75 951 BASIS WEIGHT ( GRAMMAGE ) , INGENTO PAPER CUTTER

GMEANS

:

1 17.79 1 18. 69 1.00 95% ELLIPSE: 2. 49 1.17 WITH GAMMA - 64 DEGREES

48
G/SQ.

METER

116.5

117.5

118-5

119-5

120-5

121

.

GRAMMAGE (MASS PER UNIT AREA)

SAMPLE 033 = 117-8 G/SQ. METER SAMPLE D34 = 118-7 G/SQ. METER

_1 I I 1 I I L_

LD ^ + .X.# NOT IN GRAND MEANS

CO

<=> ANALYSIS T95-1

LU

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Q_

CL

CO

O

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1 1 1 r 115.0 116.0

1 r 117.0

SAMPLE D33

118.0 ' 1 19.0

7 120.0 21 .0

G/SQ. METER

49
REPORT NO. S9G TAPPI COLLABORATIVE REFERENCE PROGRAM APRIL 1975

SUMMARY TABLE

SAMPLE GRAND SD OF AVER PEPL LABS LABS REPL TEST METHOD CODE MEAN MEAN SDR CRP INCL PARTIC TAPPI REPEAT REPROD

AIR RESISTANCE, GURLEY K43 16 *3 1.1 10 54 59 10 1.0 2.4 T40-1 GURLEY UNITS B95 48*6 3.2 5.2 4.6 8.8

AIR RESISTANCE, SHEFFIELD K43 166* 5 6.4 6.8 10 37 45 10 7.7 17.8 T40-2 SHEFF. UNITS B95 72*2 4.3 6. 0 5.2 11.9

AIR RESISTANCE, GURLEY HG FLOTATION E65 783* 75. 173. 10 13 15 10 152. 209. T41-I SEC/ 10 CC B73 1314. 281. 517. 453. 777. SMOOTHNESS, PARKER P 8 IN1SURF A83 4.613 .168 . 150 10 7 8 10 . 132 .466

T44-1 MICRONS J50 5. 801 .223 .087 .077 .617 SMOOTHNESS, SHEFFIELD A83 105.6 7.4 9.0 15 89 92 10 8.6 21.1

T45-1 SHEFF* UNITS J50 274. 5 13. 1 7.4 6.5 36.5 SMOOTHNESS, BEK K A 83 52. 85 3.72 7.56 15 10 1 1 10 6.62 1 1.00 T45-2 BEK K SECONDS J 50 1 1. 27 1. 80 .71 .63 5. 00 SMOOTHNESS, BENDTSEN A83 119. 12. 16. 10 7 9 10 14. 34. T47-1 ML/M IN J50 516. 45. 51. 45. 125.

K A N INK AB SORPTION B58 60.6 6.7 .7 4 9 11 4 1.0 18.7 T56-1 KAN UNITS E50 63.8 6. 0 .4 .6 16.6

PH, COLD J75 6. 173 .087 .067 5 4 5 2 .132 .263

T57-1 PH UNITS J 1

7

4.653 .091 .040 .078 .260

PH, HOT J75 5. 61 8 .090 .037 5 4 5 2 .073 .255 T57-2 PH UNITS J 17 4. 319 .020 .032 . 063 .074 OPACITY, BAL TYPE, e9% EACKING B21 72. 43 1.09 1 . 06 10 75 84 5 1.32 3. 16 T60-1 PERCENT K24 95. 43 .38 .31 . 38 1. 09 OPACITY, BAL TYPE, PAPER BACKING B21 75.74 .74 1.02 10 4 4 5 1.27 2. 23 T60-2 PERCENT K24 95.72 • 12 .34 .42 .44 OPACITY, ELREPBO TYPE, PAPER BACKING B21 76.97 .66 .70 10 15 17 5 .86 1.92 T60-3 PERCENT K24 96.23 o 12 .17 .21 . 38 BLUE REFLECTANCE, DIRECTIONAL J79 67. 86 .40 .22 8 22 45 6 .25 1. 11 T65-1 PERCENT E79 95. 79 • 99 .11 . 13 2. 73 BLUE REFLECTANCE, DIFFUSE, WITB TRAP J79 67.87 .84 . 14 8 17 19 6 .16 2.33

T65-2 PERCENT E79 96.35 .70 .08 .09 1.93 BLUE REFLECTANCE, DIFFUSE, NO TRAP J79 68. 38 .75 .14 8 15 15 6 . 16 2.09 T65-3 PERCENT E79 94.96 1.27 .07 .08 3. 51 SPECULAR GLOSS, 75 DEGREE E51 68. 04 2. 04 1.04 10 47 53 5 1.29 5.72

T7 5- i GLOSS UNITS E91 49. 80 1. 84 .87 1.06 5. 15 THICKNESS (CALIPER) J 83 2. 712 .069 .040 10 63 74 10 .035 . 191 T90-1 MILS J66 6. 289 • 1 18 . 120 . 1C5 .326 GPAMMAGE (MASS PER UNIT AREA) D33 117. 79 .55 1.34 10 19 20 3 2. 14 2. 34

T9 5- 1 G/SQ. METER D34 1 18.69 o 84 .86 1.38 2. 59

50
; 8 — 1 1 *a ir<e \

U.S DEPT. OF COMM. BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. TAPPI CRP 59G

2. Gov'tAccession No, 3. fteufiv nt'i Accession No.

4. TITLE AND SUBTITLE

Technical Association of the Pulp and Paper Industry

COLLABORATIVE REFERENCE PROGRAM FOR PAPER

Report 059G

5. Publication Date July 27, 1979

8. (^toiiitg Organixattor, Code

7. AUTHOR(S)

O* Powell, J* Horlick

8. Performing Oigan. Report No. NBSIR 79-1801

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, DC 20234

fasH/Wod, tot Ne.

11. Con tract/G rant No.

12. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS city, stete, ZIP)

Collaborative Teetin.fi Services, Inc*

9241 Wood Glade Drive, Great Falls, VA 22066

and Technical Association of the Pulp and

Paper Industry

13. Type of Report & Period FINAL

15. SUPPLEMENTARY NOTES

| | Document describes a computer program; SF-185, FIPS Software Summary, is attached.

16. ABSTRACT (A 200-word or teas factual summary of moat significant information. If document includes a significant bibliography

literature survey, mention it here,)

Collaborative Seference Profirams provide participating laboratories with the means for checking periodically the level and

uniforaity of their testing in comparison with that of other

participating laboratories* An important byproduct of the pro*9 grams is the provision of realistic pictures of the state of

the testing art* This is one of the periodic reports showing

averages for each participant, within and between laboratory

variability, and other information for participants and atan*

dards committees*

17. KEY WORDS (six to twelve entries; alphabetical order; capitalize only the first letter of the first key word unless a proper name;

separated by semicolons)

Collaborative reference program; Laboratory evaluation; Paper;

Precision; Beference samples. Testing calibration

18. AVAILABILITY Unlimited

XX For Official Distribution. Do Not Release to NTIS

I 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

57

22. Price

USCOMM-DC
.

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