CONTAINER

BOARD

report no. 125

KIBSi'R. 80-185*1 February 1980

NBS Collaborative! Reference

Program for Containerboard

Fourd rinier Kraft Board Group

American Paper Institute, Inc. and U.S. Department of

Commerce, National Bureau

of Standards
NBS COLLABORATIVE REFERENCE PROGRAMS

TAPPI Paper and Board (6 times per year)

Bursting strength

Tearing strength

Tensile breaking strength

Elongation to break

Tensile energy absorption

Folding endurance

Stiffness

Air resistance

Grammage

Smoothness

Surface pick strength

K & N ink absorption

Moisture content

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

Vulcanisation properties

ASTM Cement (2 times per year)

Chemical (11 chemical components)

Physical (15 characteristics)

AASHTO Bituminous

Asphalt cement (2 times per year)

Cutbacks (once a year)

NBS Collaborative Reference Programs

A05 Technology Building

National Bureau of Standards

Washington, DC 20234

Rev. 10/79
RATIONAL BUREAU

Of STANDARDS

LIBRARY SEP 1 9 1980

CONTAINER

BOARD

Collaborative Reference

Program for

Containerboard

report no. 125

February 1980

%>-($

/ Q

T.L. Cummings

NBS Research Associate

Collaborative Testing

Services, Inc.

J. Horlick

Office of Testing Laboratory

Evaluation Technology,

Office of Engineering Standards,

National Engineering Laboratory

U.S. Department of Commerce, Fourdrinier Kraft Board Group

National Bureau of Standards American Paper Institute, Inc.
< i \ ! 'i l
INTRODUCTION

The Collaborative Reference Program for Containerboard is

cosponsored by the Fourdrinier Kraft Board Group (FKBG) of the

American Paper Institute, Inc. and the National Bureau of

Standards. The program is maintained and operated by Collaborative

Testing Services, Inc. (CTS). CTS is a non-profit organization of

associations that offers CRPs to a wide range of industries.

Samples of three weights of linerboard, nominally 26 lb, 42 lb, and

69 lb and of corrugating medium (26 lb) are separately randomized

from uniform narrow rolls and packaged for distribution to the

participants. Each month, sufficient test material for four weekly

tests is mailed to participants for testing Mullen bursting

strength according to TAPPI official testing method T807 os-75 or Concora flat crush strength according to TAPPI official testing

method T309 os-71. The participants return their test results to

NBS for analysis and receive two monthly reports from NBS. One

report is a preliminary individualized report comparing a laboratory's results with the industrial mean. The other is a longer report (as illustrated by this report) showing the data from

all participants.

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

reports in general, contact Jeffrey Horlick on (301) 921-2946 or Thomas L. Cummings on (703) 442-0433.

Jeffrey Horlick, Technical Administrator

NBS Collaborative Reference Programs

Office of Testing Laboratory Evaluation Technology

March 31, 1980

TABLE OF CONTENTS

Page

1 Explanation of Tables

4 Instrument Codes

5 Use of Average Mean as a Reference Standard

6 Bursting Strength, Linerboard 42L1, week 1

8 Bursting Strength, Linerboard 42L3, weeks 2-4

10 Bursting Strength, Linerboard 26K1, weeks 1-4

12 Ooncora Flat Crush, Corrugating Medium 26D3

EXPLANATION OF TABLES

Each table shows laboratory test results for Mullen bursting strength

of linerboard or Concora flat crush strength of corrugating medium.

The data are divided into three time spans. On the left of each table

is an analysis for each week of the month. In the center is cumulative

data for the month and on the right is cumulative data for up to 16

weeks.

Conservative statistical tests have been used in excluding extreme

data from the analyses. Thus, where the mean (average) for one laboratory is compared with the average for many laboratories, limits have

been used that would exclude only one laboratory in a hundred if all

laboratories followed exactly the same testing procedure. Consequently,

laboratories receiving "X" flags should review their testing procedures,

instrument calibration, and control processes. Similar conservative

criteria were used in flagging within- laboratory standard deviations

and other statistics.

LAB MEANS THIS MONTH

WEEKLY VALUES : CODE V WE>1 WK>2 WK»3 WK-4

i LAB CODE - Confidential laboratory identification number known only to the

participant and the Collaborative Reference Program staff.

V - Code for indicating instrument type, units used, and any other

variation in test procedure or conditions. A '+' in this column

means a non-standard variation. Data marked '+' are not included

in the combined averages for all laboratories. (see page 4).

MEANS THIS MONTH - For each laboratory each weekly mean is the average of

individual test determinations, usually an average of 20

determinations

.

FLAGS (following means and standard deviations) -

X - Data excluded from an AV MEAN or average standard deviation

because value deviated from the AV MEAN or average standard

deviation by more than 2.576 times the appropriate standard

deviation. A laboratory following the prescribed test method

could obtain such an extreme value by chance only one time in

a hundred. Corrective action is almost certainly required.

* ~ Data included in the CUMULATIVE AV MEAN but the value deviated

from this mean by more than 1.960 and less that 2.576 times the

SD CUM MEAN. A laboratory following the prescribed test method

could obtain such an extreme value by chance only one time in

twenty. Corrective action may be desired.

1
s - This is a warning to the laboratory but does not affect inclusion

or exclusion of the laboratory's results from the corresponding

AV MEAN. This flag indicates an extremely high or low within-laboratory standard deviation (SDR, not shown) that could occur by

chance only one time in a hundred if the laboratory is following

the prescribed test method.

AV MEAN - (at bottom of table) - The average for the indicated week of the

means for all laboratories, except those laboratories marked '+' in column V and those means marked with an 'X’.

SDR - (not shown) - The standard deviation of within-laboratory measurements; i.e., the Standard Deviation of the Replicate measurements

made at one time in one laboratory on one package of test pieces.

AV SDR - The average for the indicated week of the SDR's of all the laboratories, except those omitted from the AV MEAN. Also an extremely

high or low SDR as compared with the AV SDR based on the remaining

laboratories is omitted from the AV SDR and the letter 'S' is

placed after the laboratory mean for that week. The AV SDR is an index of the within-laboratory precision for repeated measurements;

i.e., a measure of the ability of an average laboratory to repeat

its results over a short period of time. It includes measurement

error and sample variation.

SD LABS - For each week the standard deviation of the means about the AV MEAN

for that week after omitting those means marked with an 'X' or noted '+' in column V. The SD LABS is an index of the among-labora

tory precision of the test method as applied by the participating

laboratories; i.e., a measure of the ability of laboratories to get

comparable results.

NO. INCL -* The number of laboratory means included in the AV MEAN for that

week.

NO. OMIT - The number of laboratory means reported but omitted from AV MEAN

because of non-standard equipment, environment or procedure ('+' in

column V) or because of extreme results (X following mean)

.

NOT RCD - The number of laboratories failing to report data on time or in

usable form for this week (but who reported data for at least one of the other weeks of this month) , or who received test pieces

from a different sample of material and whose data therefore are shown in another table of this report.

SD SHTS - (Concora only) The average for the indicated week of the amongsheet within-laboratory standard deviations. The SD SHTS is an index primarily of the variability among sheets.

2
THIS MONTH

VALUES THIS MONTH : MEAN SDR SDWKS

MEAN - The average for the indicated laboratory of the reported weekly

MEANS THIS MONTH.

SDR - The average for the indicated laboratory of the weekly SDRs for

the current month.

SDWKS - For the indicated laboratory, the standard deviation among the

laboratory's weekly MEANS THIS MONTH (including those means

marked with an 'X').

CUMULATIVE

CUMULATIVE VALUES: MEAN SDR SDWKS WKS

MEAN - The average for the indicated laboratory of all its weekly means

for the number of weeks indicated, including those for the current

month. An or 'X' following this CUMULATIVE MEAN indicates the

laboratory is running consistently low or high. (See above for

explanation of these flags)

.

SDR - The average for the indicated laboratory of the weekly SDRs for

the indicated number of weeks.

SDWKS - For the indicated laboratory, the standard deviation among the

laboratory's weekly means (including those means marked with an

'X'). SDWKS is an index of the week to week precision; i.e., a measure of the ability of a laboratory to repeat its results from

week to week.

WKS - Number of weeks for which usable results have been reported by

that laboratory. At most, 16 weeks of data* are included.

GRAND AVERAGES

GRAND AVERAGES : THIS MONTH CUMULATIVE 12 WEEKS

THIS MONTH - Averages for the four weeks of the quantities shown to the left.

CUMULATIVE - Averages for the indicated number of weeks , including the four

weeks of the current month.

3
AV SDWKS The average of the SDWKS for all laboratories excluding those

marked '+' in column V or with an 'X* following the corre- sponding THIS MONTH or CUMULATIVE MEAN or SDWKS.

SD CUM MEAN - The larger of either (1) the standard deviation of the

CUMULATIVE MEANS about the average CUMULATIVE MEAN after

omitting those CUMULATIVE MEANS marked with an 'X' or with

a ’+’ in column V, or (2) the CUMULATIVE SD LABS divided by

the square root of the number of weeks cumulated. The

former will be appreciably larger than the latter only when

there are persistent systematic differences among the

laboratories

.

INSTRUMENT CODES

FOR

MULLEN BURST OF LINERBOARD

(Column V)

Code Description

A

H

IJ

L

M

N

R

X

Model A, Manual Clamp

Model AH, Hydraulic Clamp

Model A, Hydraulic Clamp added

Jumbo, Hand Clamp, Hand Driven

Lhomargy, Hydraulic Clamp, in kPa

Model AH, Hydraulic Clamp, Transducer

Lhomargy, Hydraulic Clamp, in psi

Model A, Air Clamp added

Other Model, Please Describe Instrument

Make and Model

Y

Z Nonstandard Instrument or Method

Data received too late to be included

in statistical anaylsis

Code

INSTRUMENT CODES

FOR

CONCORA TEST OF MEDIUM

(Column V)

Description ^

Z Data received too late to be included

in statistical analysis

4
Use of Average Mean as a Reference Standard

A large supply of linerboard in three weights was randomized and placed

in sealed packages ready for shipment. The supply for each weight of

board was divided into several narrow "rolls" or cross-machine "positions"

of a larger roll, and each position was separately randomized. Each

package contains test pieces from one position only. The position is

designated by the number following the letter in the code marked on the

package. Thus 42H _1 indicates that this package contains 42 lb board

from position 1 of lot H. Samples from the first position are distributed

until exhausted, then from the second position, and so forth for each

weight of board. Thus for short periods of time (several weeks to months)

,

the samples that the participants test are from the same position of a lot,

and for a longer period from the same lot.

The three weights of linerboard distributed in this program may be used as reference standards. The best reference values are the cumulative grand

AV MEANs in the latest reports. These values are given at the bottom right

of each table. For each weight of board, comparisons should be made first

for measurements made on the same position, i.e., for checking your current

measurement, use grand AV MEANs that have the same position code as on the

packages being tested. The position is shown in the upper left corner of

the table. If no report is yet available on the current position, grand

AV MEANs from previously tested positions of the same lot may be used as approximate reference values.

Similarly a large supply of a 26 lb corrugating medium was randomized,

after dividing into several narrow rolls or positions. The above

discussion for linerboard also applies to the corrugating medium.

We are currently using the fourth lot of linerboard and the fourth

lot of

Lot

corrugating medium:

Material Codes Used

1 linerboard A,B,C October 1969 - April 1973

2 linerboard D,E,F September 1972 - September 1976

3 linerboard G , H, I , J October 1976 - September 1979

4 linerboard K,L,M September 1979 -

1 corrugating medium (A) May 1973 - March 1976

2 corrugating medium B April 1976 - February 1977

3 corrugating medium C March 1977 - August 1978

4 corrugating medium D September 1978 -

5
I 1 NERBOARD 4211 COLLABORATIVE REFERENCE PROGRAM FEBRUARY I960

REPORT N0o 125

BURSTING STRENGTH (MULLEN), PST

LAB

CODE V WK- 1 MEANS THIS MONTH

WK-2 WK-3 WK—

THIS MONTH

MEAN SDR SDWKS MEAN

CUMULATIVE

SDR SDWKS WKS

100 H 1 14,9 1 140 9 50 e 1 140 8 60 5 o e 13

102 H 1 120 7 1 12o 7 70 3 112, 4 7,2 lo 9 1 1 1C 3 T 1 1 5c 7 1 150 7 7o 9 1 14o 8 5c 6 o 8 13

105 T 1 19 c 5 1 190 5 7o 1 1 13o 0 7,6 3 0 2 12 106 H 1 170 2 1 17o 2 7o 2 1 17o 6 6o 5 lc 8 13

1C8 *Z 121c 5 1 2 lo 5 60 1 1 17 0 4 7 0 6 2c 7 5

1 0<? H 1 18c 8 1 18o 8 7o 7 1 14 0 1 70 4 4 0 ex 13

1 1 0 M 118-5 1 180 5 80 0 1 15, 4 7„8 lo 6 13

1 1M 1 14c 3 1 140 3 70 2 1 15o 2 70 5 lo 7 13

1 1 2 H 105o 8X 1 05o 8 X 50 6 1 10c 9* 50 5 2o 8 13

113 R 1 16c 1 1 16® 1 7s 4 1 150 9 60 6 o 7 13

1 1 4 M 115-2 1 15® 2 5o e 1 160 4 60 8 2c 2 12

1 1 5 R 1 170 4 1 17® 4 7® 3 1 17,7 60 0 2c 5 13

1 1 7 H 1 120 4 1 12„ 4 7® 9 1 1 lo 3* 60 9 lo 7 13

1 1 9 H 1 20o 2 120o 2 7c 7 1 1 50 1 80 8X 3 0 3 1©

120 R 1 150 9 1 150 9 4o9 1 130 2 7, 1 3, 8 12

121 M 1 15c 1 115,, 1 5o 9 1 14 0 9 70 0 2, 6 13

125 I 1 19c 5 1 190 5 8o 8 1 19 0 0* 7,4 2o 8 13

1 27 H 1 14c 7 1 140 7 80 1 1 150 6 6, 8 o 7 13

128 H 1 16- 9S 1 160 9 O o ® 1 150 0 So 0 20 2 13

1 30 H 1 16c 3 1 160 3 7c 2 1 160 8 70 6 lo 7 13

131 p 1 120 9 1 12® 9 70 3 1 1 1 o 5 7c 2 30 4 13

133 A 1 140 8 1 140 8 50 9 1 150 9 6c 6 2c 7 12

134 H 1 13c 9 1 13® 9 70 8 1 170 0 6o 6 2o 8 12 136 H 1 13o 6 1 130 6 6o 5 112, 1 60 7 2o 1 13

137 H 120c 3 1 2©o 3 10o 1 120o 4X 7c 9 3© 2 12 138 H 1 17c 3 1 170 3 60 e 1 180 2 70 5 1 o 7 13

139 R llloO 1 1 l o 0 70 6 1 140 0 70 5 5o 3X 13

1 40 H 1 12c 6S 1 12® 6 30 e 1 12o 1 50 2X 1 o 4 13

14 1 M 1 130 5S 1 13® 5 3c 6 1 14o 4 50 5 o 6 13

142 A 1 12 0 9 8 12© 9 5o 2 lllo 1* 50 8 lo 6 13

145 H 1 16-7 1 160 7 1 Oo 1 1 14 0 4 70 2 2 0 3 12

1 47 H 1 140 1 1 140 1 10o 0 1 13o 4 7C 0 lo 9 13

149 H 1 1 lo7 1 1 lo 7 80 e 1 16o 1 7c 4 30 6 12

151 H 1 13c 3 1 130 3 70 5 1 16c 0 7c 2 2c 4 12

153 H 122- IS 1 22e 1 1 40 3 1 15, 6 6o 0 2o8 13

1 55 H 1 190 8 1 19e 8 90 0 1 16, 3 7,5 20 6 13

157 H HOol 1 10o l 7o 1 1 16, 7 70 1 30 4 13

161 X 1 1 9 0 3 1 19o 3 80 4 1 170 3 70 1 3o 0 13

165 R 1 140 1 1 14© 1 60 9 1 14 0 2 8c 0 lo 7 12

167 H 1 130 5 1 13o 5 70 4 1 1 lo 8 50 e lo 8 13

169 T 1 16c 6 11 60 6 4® 7 1 14c 3 6c 6 2c 5 12 171 H 108c e 1 08o 8 70 8 1 14, 0 70 2 2o 3 12 172 H 1 170 0 1 170 0 50 6 1 14 0 0 6c 5 lo 8 13

173 H 1 1 4o 0 1 140 0 6c 2 1 150 6 50 5 lo 6 9

174 H 1 170 1 1 17e 1 6® 1 1 16 0 4 6o e 2c 4 13

175 H 1 12o 0 1 12o 0 9e 5 1 14c 3 So 4 2c 9 13

176 H 1C8 0 3 1 08o 3 7o 8 1 14, 1 7® 2 2o2 13

177 H 1 170 9 1 17o 9 6 0 3 1 130 9 6c 8 3o 0 12

182 H 1 180 6 1 180 6 5,3 1 17o 2 7 0 8 2 0 0 13

184 H 1 15c 8 1 150 8 7, 5 1 14 0 9 70 3 2o 8 12

1 86 T 1 18 0 1 1 18o 1 7o 1 1 17o 2 7o 1 2o 8 13

188 T 1 150 1 1 15e 1 6o 8 1 150 4 6c 6 lo 4 13

198 R 1 180 8 1 18„ 8 6, 9 1 170 7 60 e 1 o 2 12 274 H 115c 4 1 15o 4 6c 4 1 15o 9 60 4 o 9 9

6
T 7 NE^BflAPD 4 211 CALL A BAR ATI V E REFERENCE PRAORAM FEBRUARY 19*0

REPART NAo 125

BURSTING STRENGTH ( MULLEN ), PST

T AB MEANS THIS MANTB THIS M6NTH CUMULATIVE

CADE V WK-1 WK-2 WK-3 WK- 4 MEAN SDR SDWKS MEAN SDR SDWKS *KR

28 3 H 112-8 1 12e 8 7o 0 1 160 8 6- e 2- 4 12 28 7 A 121- 1 1 2 lo 1 80 7 1240 OX e0 6 3o e 13

32 7 Z 114-5 1 140 5 8„ 4 115- 9 80 5 3o 2 8 359 H 1 1 2-> 9 1 120 9 9- 1 115-7 7- 2 2- 4 4 553 M 116-9 1 160 9 7o 0 1 16- 6 7c 4 2- 2 1 3

56 2 A 111-5 1 1 lo 5 6o 6 1240 5X ec 0 e 0 OX 13

56e I 1 1 8 C 9 1 18e 9 80 3 1 130 0 70 5 3C 2 13

569 A 1 12c 8 1 12o 8 9- 3 1 180 9* 7- 5 40 3X 1 1 658 H 115-1 1 15o 1 60 7 1 150 e 7o 7 lo 8 13

TO! H 118-6 1 18© 6 6o 8 1 16- 4 80 2 2- 1 1 3

GRAND AVERAGES

M-t WK-2 WK-3 WK-4 THIS MAN^H CUMULATIVE 13 WEEKS

AV MEAN 115-5 AV MEAN 1 150 5 1 1 5o 1 AV SDR 7-3 AV SDR 70 3 7 0 0

SD LABS 3C 0 SD LABS 3- 0 3 o 0 VO- twcl 61 NA- INCL 6 1 0 0 590 5 NA AMIT 4 AV SDWKS - 0 2o2

NAT v>CD 0 SD CUM MEAN 1-9

7
LTNERBflARD 4 2L3 COLL AB0RATIVE REFERENCE PROGRAM FEBRUARY 1980

PEP0RT N0O 125

BURSTING STRENGTH (MULLEN), PST

TAB MEANS THIS MONTH THIS MONTH CUMULATIVE

CODE V «K -1 WK-2 WK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDHKS WKS

100 H 1 19o 3 1 18o 1 1 19, 8 1 190 1 7,9 o 9 1 19, 1 7,9 o 9 3 102 H 1 1 40 3 1 130 7 1 180 9 1 150 6 60 7 20 9 1 150 6 60 7 2,9 3 103 I 1 2 0 o 0 1 15, 5 1 2 1 0 0 1 18o 8 60 3 2o 9 1 180 8 6, 3 2,9 3 105 M 120o 8 1 17o 2 1 IQoCX 1 160 0 80 5 5C 5 1 16 0 0 8,5 5o 5X 3

1 06 H 12 2o 0 1 2

o 2 1 2 20 3 1 21o 9 6, 5 06 121, 9 60 5 06 3

108 Z 1 190 3 1 190 3 70 8 1 19 0 3 70 8 1 1C9 H 118, 1 1 20o 1 1 20 o 2 1 19o 5 7o 1 lo 2 1 190 5 7o 1 lo 2 3

1 1 0 M 1 1 80 5 1 220 2 120o 2 1 20o 3 9, 1 lo 9 120, 3 9, 1 1 o 9 3

1 1 1 M 1 1 50 7 1 20 o 1 1 18o 4 1 18e 1 60 6 2o 2 1 180 1 6o 6 2o 2 3

1 1 2 H 108o 7X 1 07o 2X 1 l lo 6 I09o 2X 80 8 2o 2 1 ©9o 2X 80 8 2,2 3

1 1 3 R 1 1 40 2 1 150 5 1 15o 1 1 15o © 6o © o 7 1 150 © 6o 0 o 7 3

1 1 4 M 1 170 7 1 18c 4 1240 2 1 20o 1 6o 4 30 6 120 , 1 60 4 3 0 6 3

1 1 5 R 1 09o e 1 16o 2 1 17, 4 1 14o 4 70 4 4o 2 1 14 0 4 7,4 40 2 3 117 H 11 5o 2 1 160 5 1 140 9 1 15o 5 8,0 o9 1 15, 5 So© o 9 3

1 19 H 1120 3 123c 7 1 1

0 7 1 170 9 8, 3 5c 7 1 17, 9 80 3 5o7X 3

120 R 1 170 5 1 16c 7 1 160 8 1 17o © 7, 3 o 4 117,0 70 3 o 4 3 121 M 1170 6 1 180 6 1 2 1 o 0 1 19o 1 7,9 lo 8 1 190 1 7o9 lo 8 3 125 I 1 1 90 1 1 1

0 7 1 160 1 1 1e 7 80 5 1, 5 1 170 7 80 5 lo 5 3

127 H 1 22o 5 120o 9 1 15«7 1 190 7 6o 4 3C 5 1 190 7 6o 4 3 0 5 3 128 H 1 1 8 0 0 1 14o 1 1 150 9 1 16c 0 7,0 2c 0 1 16o 0 7o 0 2, 0 3

130 H 1 190 7 122c 6 1 1

9

0 9 1 20o 8 70 5 lo 6 1 20 o 8 70 5 lo 6 3

131 R 1

5o 2 1 l5o 6 1

lo 2 1 17o 4 8, 4 3e 3 1 170 4 e 0 4 30 3 3

133 A 1 15o 3 1 16c OS 1 150 0 1 150 4 6o 4 o 5 1 15o 4 6,4 o 5 3

134 H 1 190 0 1 16c 8 1 16o 0 1 170 3 7,7 lo 5 1 170 3 7,7 lo 5 3 136 H 1 13o 8 1 180 2 1 1 lo 5 1 140 5 70 3 30 4 1 14o 5 70 3 3 0 4 3

137 H 125, 6 1 21 0 0 1 2 20 5 1230 0 70 5 2o 3 123o 0* 70 5 2, 3 3 138 H 1 23o 0 1 250 3X 1 2 lo 0 1230 1 7, 6 2e 2 1 230 1* 7,6 2o 2 3 139 R 107o 3X 1 120 9 1 lOo 1 X 6, 5 4« 0 1 10, IX 6o 5 4 0 0 2 140 H 1 170 5 1 160 4S 1 170 0 3, 9 o 7 1 170 0 30 9X o 7 2 141 M 1 1 40 8 1 16, 1 1 1

6

0 9 1 15o 9 5 0 8 lo 0 1 15, 9 5o 8 lo 0 3

1 42 A 1 16c 5 1 150 8 1 13c 9 1 150 4 6 o 9 lo 3 1 15, 4 6, 9 lo 3 3

145 H 1 13, 9 1 170 6 1 150 8 60 2 2o © 1 150 8 6o 2 2o 6 2

1 47 H 1 130 7 1 170 6 1 1 lo 5 1 140 3 60 4 3o 1 1 140 3 6o 4 30 1 3 149 H 1 170 3 1 160 8 1 140 7 1 16, 3 6,7 lo 4 1 16, 3 e0 7 lo 4 3 151 H 124, 3 1 19, 0 1 2 lo 0 1 2 lo 5 60 e 2,7 121, 5 60 8 2o 7 3

1 53 H 1 19c 4 1220 1 1 2 30 0 1 21 0 5 7o 9 lo 8 121, 5 7o 9 1

~* 0

no 3 155 H 1 190 e 120o 4 1 17 0 7 1 19e 3 80 7 lo 4 1 19, 3 8o7 lo 4 3 157 H 1 150 2 1 140 5 1140 2S 1 14c 7 60 0 o 5 1 14, 7 60 0 o 5 3 161 X 124c 0 1 22o 1 1230 0 6o 3 lo 3 1 230 0* 6, 3 lo 3 2 163 H 1 18o 0 1 19 0 3 1 180 7 7, 2 o 9 1 18, 7 7,2 o 9 2

165 R 1 17„ 3 1 16 o 0 1 180 5 1 170 3 50 9 lo 3 1 17, 3 5o 9 lo 3 3 167 H 1 1 4o 2 1 180 7 i i6 0 e 1 16o 6 8, 2 20 2 1 16, 6 So 2 2o 2 3 169 I 1 1 50 5 1 15, 8 1 140 3 1 15c 2 6o 8 o 8 1 150 2 6, 8 o 8 3

17 1 H 1 160 7 1 120 9 1 160 5 1 15c 4 60 5 2o 2 1 15, 4 60 5 2o 2 3 172 H 1 160 e 1 19, 5 1 190 1 1 180 5 7, 5 lo 5 118,5 70 5 lo 5 3

173 H 127n 3X 1 2 1 o 1 1 19,8 1 220 7 50 7 40 0 1 22 q 7 50 7 4o 0 3

174 H 1 20« 6 1 170 5 1 1 9o 9 1 19c 3 70 6 lo 6 1 190 3 7C 6 1.6 3 175 H 1 1 5e 1 120c e 1 2 lo 1 1 19e 0 80 1 30 4 1 19 0 0 8o 1 3 0 4 3 176 H 1150 1 1 12, 6 120o 1 1 16o© 7, 8 3o 8 1 16, 0 70 8 3 0 e 3 177 H 1 1 80 7 12 lo 4 1 19o 3 1 19o 8 7, 1 lo 4 1 19, 8 7o 1 lo 4 3

182 H 1 190 4 1 1 9o 1 1240 3 120o 9 7, 0 20 9 120, 9 70 0 2o9 3 184 H 1220 8 1 19 0 9 1 2 2, 9 1 21 0 9 7, e lo 7 121, 9 7, 8 lo 7 3

1 86 I 120 o 2 1 190 6 1 2 1 0 5 120o 5 70 7 o9 120,5 7,7 o 9 3 188 H 1 160 4 1 16 0 2 1 18,9 1 17o 2 6o 7 lo 5 1 17, 2 6o 7 lo 5 3

198 R 11 4C 7 1 130 5 1 120 9 1 1 3o 7 60 4 o 9 1 13, 7 6o 4 o 9 3

8
T.INERB*AFD 42L3 COLLABORATIVE REFERENCE PROGRAM

REPORT N0o 125

BURSTING STRENGTH (MULLEN), PSI

FEBRUARY 1980

I.AB MEANS TBIS MONTB THIS MONTH CUMULATIVE

CODE V WK-1 WK-2 WK-3 w k-4 MEAN SDR SDWKS MEAN SDR SDWKS WKB

250 N 1 140 6 1 16o is 1 15o 4 90 0 lo 1 1 150 4 90 0 lo 1 2 274 H 1 170 e 1 160 9 1 1 80 2 1 17o 6 7o 1 o 7 1 170 6 7o 1 o 7 3 283 H 120 o 2 1 20o 2 80 4 1 20o 2 e0 4 1 287 A 1 330 6X 1 330 OX S 1270 5XS 1 3 lo 4X 1 lo 3 30 3 1 31 o 4X 1 lo 3X 30 3 3 327 Z 1 2 1 0 7 1230 3 12 1 0 2 122o 1 80 4 lo 1 1220 1 So 4 lo 1 3 359 H 1120 6 1 16o 7 1 160 0 1 15c 1 60 1 2c 2 1

1

5o 1 60 1 2o2 3

553 M 122c 9 1 190 9 1 190 5 1 2©o 8 7o 1 lo 9 120 o 8 7o 1 lo 9 3

562 A 1220 3 1 18o0 120o 3 120o 2 70 5 2„ 1 120o 2 7o 5 2o 1 3 568 I 1230 2 123o 1 1 20o 7 1 22© 3 70 3 lo 4 1 22o 3 70 3 1 o 4 3 569 A 122o 2 1 2 lo 6 1 170 0 1 2©0 3 8o 0 20 8 120 o 3 e0 o 2 0 e 3

65 8 Z 1160 4 1 16c 5 1 160 5 5o 9 o0 1 16o 5 50 9 o 0 2 ?oi H 1 180 7 1 180 2 1 190 9 1 19o 0 70 7 o 9 1 19o 0 7o7 o 9 3

AV MEAN

WK-1 WK-2

1 170 9

WK-3

1 180 0

WK-4

1 1 80 2 AV

THIS

MEAN

GRAND

MONTH

1180 1

AVERAGES

CUMULATIVE 3 WEEKS

11 8 0 1 AV SDR 7o 3 7 0 2 7o4 AV SDR 7o 3 7 0 3 SD LABS 30 4 2 0 7 30 1 SD LABS 3o 1 30 1 NO- INCL 54 57 60 NOo INCL 57o 0 57o 0 NO- OMIT 8 7 4 AV SDWKS 2o 0 1 o 9 NOT PCD 5 3 SD CUM MEAN 2o 5

9
TTNEPB0ARD 26K1 COLLABORATIVE REFERENCE PR0GRAM FEBRUARY 1980

REP0RT Ne„ 125

BURSTING STRENGTH (MULLEN), PSI

LAB MEANS TBIS MONTH THIS MONTH CUMULATIVE

CADE V WK-1 WK-2 WK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDWKS WKS

1 00 H ei 0 9 81 0 2 80o 7 820 7 8 lo 6 0 o o 9 80o 5 6o 0 lo 6 12

102 H 80, 2 78, 8 77, 8 750 5 780 1 40 5 2o 0 78,4 50 3 1© e 1 1

l c 3 I 81 0 0 81 0 5 7 80 8 82© © SO© 8 5o 9 lo 4 79o 4 So 4 2,0 12 105 M 8 1 o 1 79o 0 92o 2 77© 7 80o 0 60 8 2o 0 81 0 8 60 3 2, 6 12 106 H 780 5 85, 6 04o 9 8 I© 6 82o 7 7, 1 3© 3 82o 4 7o4 2o4 12

108 Z 84c 7 85, 8 85© 2 60 0 © 8 8 1 o 3 60 3 30 2 6

1 09 H 79, 9 79, 9 eOo© 79, 1 790 7 60 4 o 4 78o 2 60 6 2 0 8 12 110 M e3 0 6 83, 1 94o 9 830 8 83© 9 60 1 o 8 830 4 60 4 lo 1 12

1 1 1 M 77c 2 83, 7 76o 0 78© 5 78o 9 7o 1 3© 4 790 9 60 9 2o 2 12

1 1 2 H 690 7X 690 ex 720 6XS 690 8X 70o 5X 80 2 lo 4 71o 9X 7o 0 lo 8 12

1 1 3 P 780 9 78, 3 78, 4 790 1 7 80 7 4o7 © 4 790 7 5o 2 lo 2 12

1 1 4 M 80o 6 81,6 96, 1 8 40 3 830 1 60 2 2o 5 820 2 60 1 20 3 1 1

1 1 5 R 76o 8 77,0 75, 7S 76o 0 760 4 4o e 06 78 0 3 50 5 20 0 12

1 1 7 H 80c 9 79, 2 79o 3 780 1 79© 4 5© 9 lo 1 79,4 50 9 2C 2 12

1 1 9 H 770 4 76, 1 9 1 o 2 79o 4 78© 5 6o 3 2e 3 790 6 6© 0 2« 1 1 1

120 S 830 3 8 2<> 6 92o 0 8 lo 5 82o 4 60 8 o 8 81 0 7 e0 7 30 4 1 1 121 M 820 3S 8 lo 1 860 5 85o 2 830 8 7© 1 20 5 82 0 9 60 4 2,4 12

125 I 81,9 84, 4 79 0 0 80, 1 8 lo 4 6o 0 2C 4 830 4 5o 8 2o e 12 127 H 82,5 81,5 82o e 8 lo 8 82© 2 4, 8 06 80,6 50 4 2o 0 12 128 H 830 4 79, 8 93c 8S 82 s 3 820 3 ec 3 lo 8 91, 1 60 7 lo 9 12

130 H 79,6 82, 6 820 5 82e 4 eio 8 70 3 lo 4 CD t=s 0 70 8 1,9 12 131 R 77,6 77,9 770 9 820 9 79o 1 5o e 2© 5 80 o 3 6C 6 2, 1 12

133 A 78,6 77, 9 780 0 77e 4 78© 0 50 9 ©5 80 o 0 70 0 2o 6 12

134 H 8 2, 5 82, IS eOo© 820 0 8 1© 7 60 4 lo 1 84, 3* 50 9 3o6 12

136 H 79, 6 79, 9 8 1 0 8 82o 7 eioO 6, 1 lo 5 81, 1 50 e lo 1 12

137 H 76, 5 83, 5 77o OS 77c 7 78o 7 7o 9 3© 2 78o 9 7© 1 4 0 5X 12 138 H 82, 6 84, 3 850 2 82o 5 83© 6 7© 1 1,3 83o 1 70 5 lo 9 12

139 P 76, 9 74, OS 760 7 750 2 75» 7 80 0 W4 80o 8 7© 0 6o 2X 12

1 40 H 77,0 75o es 77o 4 740 1 76© 1 4, 2 US 74 0 8X 4© 7X 20 0 12

14 1 M 78,6 78,7 780 8 78e 2 78e 6 6o 4 o 3 78o4 6© 1 lo 2 12

142 A 77,4 75, 6 760 5 77o 2 76e 7 50 8 © 8 7

5

0 IX 60 2 lo 7 12 145 H 81,7 83o 7 8 lo 8 82© 4 60 2 lo 2 80,9 50 7 2© 8 10

147 H 760 5 80o 0 ei 0 2 80o 8 790 6 6, 3 2© 1 80o 5 7o 0 lo 8 12 149 H 8 1 o 5 830 6 930 1 3 2, 1 820 6 5, 9 o 9 83o 6 60 5 20 0 1 1 151 H 79, 5 79, 6 90,4 82o 3 80o5 7,7 lo 3 78, 1 6o 0 2© 2 1 1

1 53 H 85, 2 84, 1 9 1 0 4 8 1 0 1 83© 0 70 C 2© 0 82, 9 7©9 1 o 7 12 155 H 78,0 8 1 0 1 7 80 7 80o 2 790 5 50 5 lo 4 80 o 1 6o 5 lo 1 12

157 H 82,9 79,6 920 5S 83o 2 820 0 60 0 lo 7 83 o 7 60 1 30 0 12 161 X 79,7 79, 3S 8 lo 6 840 2 8 lo 2 5© 0 2C 2 80, 5 6o 1 2, 1 12 163 H 82o 1 80o 1 ei 0 i 50 3 lo 4 790 7 60 3 lo 5 9

165 R 840 3 80o 9 80o 4 8 2© 8 82o 1 60 4 U 8 8 1 o 6 Co 5 lo 7 1 1 167 H 77, 2 76, 2 79o 0 770 5 77© 5 5o 8 lo 2 76o 8* 5o 5 2o 1 12 169 I 82o 7 8 lo 5 83o 2 8 lo 2 82e 1 50 2 lo© 82, 8 5,7 lo 7 1 1 17 1 H 77,8 8 lo 4 78, 8 80o 5 79e 6 6o 4 lo 6 80 o 1 60 6 2o 1 12

172 H 860 4 80© e 790 3 790 3 8 1 0 5 6o 0 3© 4 78o 9 6© 0 3© 1 12

173 H 8 2o 6 8 1 © 0 8 3o 7 820 8 82Q 5 5 0 0 1© 1 82,0 4© 6X lo 5 1 1 174 H 82, 1 840 7 80o 2 75o 2 80, 6 5© 8 4© 0 81© 8 6© 3 2© 5 12

175 H 77,3 730 5 940 7 850 1 80© 2 6o 3 5© 7 81 o 5 60 1 4o OX 12 176 H 79,5 790 1 790 7 8 1 o 3 79© 9 6o 7 1© 0 790 6 606 lo 6 12 177 H 80,7 77o 4 7 80 3 760 4 780 2 60 0 1© 8 75 0 8* 60 1 2o 5 1 1

182 H 83, 6 85o 0 8 1 o 5 84o 7 83o 7 6 0 0 lo 6 830 2 60 6 1,9 12

1 84 H 79o 4 8 1 o 4 84o 6 82© 9 82© 1 6, 9 2o 2 82o 0 6o 9 2o 8 12

1 86 I 780 8 8 2, 1 80, 1 79© 5 80o 2 5o 9 U 4 3 1 o 1 50 7 2©7 12

1 88 I 80, 3 80 o 8 79 0 9S 80o 3 80© 3 6o 0 o 3 80, 2 60 0 lo 1 12

198 R 89, IX 780 4 7 8, e 80o 4 81© 7 5o 2 5© 0 83o 0 60 1 3 0 4 1 1

10
LINERBAARD 26K1 C6LLABAR ATI VE REFERENCE PRAGRAM

DEPART N0O 125

BURSTING STRENGTH (MULLEN), PSI

FEBRUARY 1980

TAB MEANS THIS! MANTB THIS MANTH CUMULATIVE

CADE V WK-1 WK-2 WK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDWKS WKS

250 N 8 1 o 1 780 9 80c 0 70 9 lo 5 730 7X 60 9 40 2X 8 274 H 79o 2 8 0o 4 90o 3 790 7 79o 9 50 6 o 5 77o 9 5o 9 3o 0 12

283 H 7e c 7 79e 4 790 0 80 7 o 5 80o 8 70 6 lo 7 10

2

8"p A 860 4 860 8 90o 5XS 870 IS 87o 7X 8 0 1 lo 9 870 5X 70 7 2o 1 12

327 Z 84o 1 840 9 830 3 85o 6 840 5 50 5 lo 0 85o 9X 5o 3 2o 2 8

359 H 79o 6 760 4S 750 5S 750 8 76e 8 7c 2 lo 9 76 0 8 70 2 lo 9 4 553 M 80o 4 87o 1 870 1 820 4 840 3 60 0 3o 4 83o 9 6o 3 2o 8 12

562 A 830 0 8 lo © 950 5 81o© 82e 6 6 0 2 20 2 840 1 70 2 4o OX 12

568 I 790 5 8 lo 9 830 2 8 lo 6 7o© lo 9 780 6 60 7 2 0 3 1 1 569 A 770 9 8 lo 5 80o 7 780 5 790 7 6o 2 lo 7 80 o 8 60 2 20 6 1 0 658 Z 82c 3 820 7S 790 4 8 lo 5 50 1 lo 8 8 1 o 2 50 5 1 o 9 1 1 701 H 820 1 8 lo 7 92c 7 83o 2 820 4 60 7 o 6 820 4 70 4 lo 6 12

WK-1 * 0 CVJ WK-3 WK-4 THIS

GRAND

MANTH

AVERAGES

CUMULATIVE 12 WEEKS

AV MEAN 80o 4 80o 6 80o9 80o 6 AV MEAN 80o 6 80 o 5 AV SDR 60 6 60 2 50 9 6o 2 AV SDR 6o 2 6 0 2 SD LABS 2C 5 30 0 2o9 2C 8 SD LABS 20 e 3 0 3

NA- INCL 58 58 59 61 NA0 INCL 59c 0 6 1 o 7

NA- AM IT 6 5 6 4 AV SDWKS lo 7 2o 1 NAT PCD 3 4 2 2 SD CUM MEAN lo 9

11
C^PSUG- MFDIUM 26D3 C6LLAB6RAT3 VE REFERENCE PROGRAM

REPORT NO© 125

FIAT CRUSH STRENGTH ( CONCORA ) IB

FEBRUARY 1980

LAB MEANS THIS M0NTB THIS M0NTH CUMULATIVE

CODE V WF -1 WK-2 MK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDWKS WKS

100 720 5 7 lo 5 7 1 o 5 720 0 7 lo 9 40 5 o 5 720 2 40 5 o 5 8 102 7 3, 2 73c 7 73o 7 72,5 73o 3 30 6 o 6 73o 1 3, 5 ,6 8 105 720 7S 7 40 7 72o 7 740 0 730 6 4, 1 lo© 730 5 40 4 o 9 6

1 06 720 3 720 7 7 2o 9 73o 0 72e 7 3, 6 o 3 72o 8 30 3 o 3 8

1 10 730 9 750 6 760 9 770 1 750 9 3, 5 lo 5 74, 5 30 5 2 0 0 8

1 1 3 720 4 72e 1 7 2o 6 7 lo 9 72, 3 20 8 o 3 720 4 3o 0 o 4 8

1 1 4 7 1,4 70o 7 7 1 0 1 720 5 7 1© 4 2, 5 08 71,4 2,6 o 8 8

1 1 5 7 2o 4 7

0 7 7 1 0 3 730 5 720 2 3, 1 lo 0 7 lo 9 30 4 1,4 8

1 1 9 690 3 72o 7 67o 1 680 5 69o 4 3,5 2,4 690 2 3o5 lo 7 7

120 6 90 8 690 5 70o 5 70o 5 70o 1 30 9 o5 70 o 6 3e 4 o e 8

125 7<5 0 3X 78c 3 8 lo OXS eo0 ex 79C 9X 5, 1 lo 3 80, IX 50 ©X lo 1 8 128 720 4 71 0 5 72, 6 7 20 0 72c 1 3, 3 o 5 720 3 30 2 o 8 8 136 73, 5 670 6 70o 3 670 6 69e 8 3, 5 2o 8 70 o 4 3C 6 20 0 8 138 7 6 o 7 79o 2 730 8 79o 3 77, 3 40 e 2o 6 760 7 4o 4 2,0 8 140 7 20 1 720 2 72,4 730 9 720 6 3, 2 o 8 73, 1 3o 8 o 9 8

151 730 1 730 2 730 1 73o 0 730 1 3, 8 o 1 720 8 3o 8 o 4 8 161 7 20 8 68o 9 72o 7 7 20 5 7 I© 7 30 9 lo 9 73„ 3 4,7 3 0 3X 8 164 7 Oo 3 720 6 730 8 72,5 72e 3 3, 7 lo 5 720 5 30 8 lo© 8 167 7 lo 6 7 Oo 6 70,6 72© 9 7 lo 4 30 3 lo 1 71o 5 3, 2 ,7 8 177 660 9 70o 2 67,8 690 9 68o 7 3o 3 lo 6 69, 3 2,9 lo 6 8

182 75o 9 730 7 70c 9 70o 7 720 8 3, 8 20 5 720 6 4,2 lo 7 8

1 88 720 7 7

0 8 7 4o 3 7 1 o 6 720 6 2,9 lo 2 72,0 3o© lo 3 8 198 69,7 69o 0 67, 8 70o 9 69c 4 4, 1 lo 3 70 o 1 40 0 lo 8 8 237 71 c 4 72o 4 720 1 720 5 72© 1 30 9 o5 72o 4 3o 9 o 9 8 250 680 2 7 lo 1 69e 7 2, 2 2o © 680 5 2o OX lo 7 6

269 71,7 7 1 0 7 7 0 o 3 69o 1 70© 7 30 5 lo 3 71, 0 3,5 lo 1 8 274 72, 8 730 2 720 6 730 2 73o 0 3,4 o 3 730 0 3,4 o 3 4 283 72„ 7 730 2 72o 9 30 2 o 4 73o 5 30 2 o 9 3 284 690 9 7 1 o 1 70 o 2 71 0 4 70o 7 30 5 o 7 70 o 6 3,9 o 7 8 287 78 c 7 75o 9 770 5 77,0 770 3 30 7 lo 2 77, 3* 30 9 o 9 8 289 670 9 70o 4 6 8,7 69o8 690 2 3o 3 lo 1 70 o 3 30 2 2o 3 8 292 67, 3 63o 2XS 69o 5 7 1 o 6 670 9 4 o 0 30 6 68, 6 30 6 2© 7X 8 350 830 IX 870 2XS 830 3X 840 7X 840 6 X 4,7 lo 9 83, 4X 4C 9X 3 0 6 X 8 351 73, 8 7 4C 3 73c 5 74 0 S 740 1 30 0 © ^ 73 0 8 20 8 o 5 8 353 73, 2 75o 9 75o 7 750 0 4 0 6 lo 5 740 8 30 6 lo 6 6 355 72o 9 72o 4 720 2 730 8 720 9 3, 9 o 7 720 2 30 7 lo 1 8 357 69, 2 690 2 70,3 690 0 69o 5 2, 6 o 6 690 1 2,9 o 9 7

359 8 1 o 6 X 920 IX 830 3X 870 6X 860 2X 4,7 4e 7 85, 3X 50 3X 4o 3X y

361 66, 5 7 1 0 5 7 1 o 8 7 0o 1 70o C 3, 2 2© 4 690 8 3,4 lo 7 8 36 3 7 1 o 7 7Qo e 690 7 670 5 690 9 . 3,7 lo 8 70, 3 30 3 lo 6 8

365 70o 0 690 1 690 1 6 80 5 690 2 3o 9 o 6 690 9 3o 8 lo 7 8 367 750 2 740 0 72o 8 740 0 2,6 lo 2 740 3 30 2 lo 1 6

369 720 8 72e 1 7 1 0 5 72, 5 720 2 3, 7 o 6 720 6 30 6 o 7 8 377 740 3 72e 5 75,9 72o 7 730 9 30 7 lo 6 73, 7 30 6 lo 3 8 379 74, 3 7

C 9 74, e 73,4 74, 4 4, 1 o 7 74, 6 40 4 o 7 6

381 730 2 7 4o 2 7 2o 8 72o5 . 73a 2 30 7 o7 72a 9 3© 7 o 7 8 383 73o 1 7 1 0 0 7 1 © 3 73„6 720 2 3, 5 lo 3 720 3 30 5 1.4 8 385 7 lo 4 7 1 o 6 78, 9 74, 0 2,9 4© 3 730 4 30 1 2, 9X 7

387 74,4 75c 5 780 2 770 1 760 3 4, 1 lo 7 75 0 9 3© 9 lo 3 a 391 620 6 X 630 6 X 63o6X 63o 3X 2 , 0 o 6 670 1* 2o 7 40 3X 6

39 3 750 6 75o 9 760 2 7 8 o 5 76c 6 2o 5 lo 3 75o 5 30 2 lo 6 8 395 76o 9 75o 8 Y3o 2 730 0 74© 8 3,7 lo 9 74, 4 3o 6 lo 5 8 397 73, 3 750 5 73c 0 74o 9 74c 2 30 8 lo 2 740 4 3o 7 1, 5 8 399 68, 2 6 So 4 7 1 0 3 720 5 70 o 1 3, 1 2o 2 690 9 3© 5 lo 6 8 553 730 5 7 3o 8 72o6 730 7 730 4 3, 7 o5 730 3 3© 6 o 9 8

12
COPRUGo MEDIUM 26D3 COLLABORATI VE REFERENCE PROGRAM FEBRUARY I960

REPORT N0C 125

FLAT CRUSH STRENGTH ( CONCORA ) LB

IAB MEANS THIS MONTH THIS MONTH CUMULATIVE

CODE V WK-1 WK-2 WK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDWKS WKS

562 70c 9 70o 9 72o 8 730 2 720 0 4o 1 lo2 71 0 6 4o 0 lo 6 8 568 74o 3 740 8 730 1 750 7 740 5 3o 4 lo 1 73o 5 3o 6 lo 5 8 578 81 0 3XS 780 9 750 3 760 1 77o 9 4o7 2o 7 760 6 4o 1 20 6X 8 6C9 720 9 730 2 74o 0 730 0 730 3 3o 9 o 5 72o 9 3o 7 lo 1 8 61T 760 5 770 5 760 3S 7 8 0 9 770 3 4o9 lo 2 770 4* 4o 7 lo 4 8

GRAND AVERAGES

WK-1 WK-2 WK-3 WK-4 TBIS MONTB CUMULATIVE 8 WEEKS

AV MEAN 72o4 720 9 72o 4 72o 9 AV MEAN 72o 6 7 20 5

AV SDR 30 4 3o 5 30 6 3 0 7 AV SDR 30 5 3o 6

SD LABS 2o 5 2o 7 20 5 2o 8 SD LABS 20 6 2o4

NO- INCL 54 53 55 54 N0o INCL 540 0 540 1 NO OMIT 5 4

a 4 AV SDWKS lo 3 1 o 2 NOT RCD 1 3 2 2 SD CUM MEAN 2o2

SD SHTS 2o 1 2o 1 20 2 2o2

13
NBS-1 14A (REV. 9-78)

U.S. DEPT. OF COMM.

BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. FKBG CRP 125

2.Gov'L Accession No, 3. Recipient’s Accession No.

4. TITLE AND SUBTITLE

CONTAINERBOARD

Collaborative Reference Program for Containerboard

Report #123

5. Publication Date March 31, 1980

6.

7. AUTHOR(S)

T.L. Cummings, J. Horlick

8. Performing Organ. Report No. NBSIR 80-1829

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, DC 20234

16. Project/Task/Work Unit No.

11. Contract/Grant No.

12. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS (Street. City, State, zip)

Collaborative Testing Services, Inc.

9241 Wood Glade Drive

Great Falls, VA 22066; and American Paper Institue/

Fourdrinier Kraft Board Group

13. Type of Report & Period Covered

Final

14.

- • . 15. SUPPLEMENTARY NOTES

| 1 Document describes a computer program; SF-185, FIPS Software Summary, is attached.

16. ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significant bibliography or

literature survey, mention it here.)

Collaborative Reference Programs provide participating laboratories with the means for checking periodically the level and uniformity of their testing

in comparison with that of other participating laboratories. An important

by-product of the programs 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 standards 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, Containerboard; Laboratory evaluation;

Precision; Reference samples; Testing calibration

18. AVAILABILITY Unlimited

[%~1 For Official Distribution. Do Not Release to NTIS

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 21. NO. OF

(THIS REPORT) PRINTED PAGES

UNCLASSIFIED

17

20. SECURITY CLASS 22. Price (THIS PAGE)

UNCLASSIFIED

USC O MM- D C

}IJ\