79-1814

1979

C.2

NBS Collaborative Reference Fourdrinier Kraft Board Group

Program for Containerboard American Paper Institute, Inc. and U.S. Department of

Commerce, National Bureau

of Standards
NBS COLLABORATIVE REFERENCE PROGRAMS

TAPP I Paper and Board (6 times per year)

Bursting strength

Tearing strength

Tensile breaking strength

Elongation to break

Tensile energy absorption

Folding endurance

Stiffness

Air resistance

Grammage

Smoothness

Surface pick strength

K & N ink absorption

pH

Opacity

Blue reflectance (brightness)

Specular gloss, 75°

Thickness

Concora (flat crush)

Ring crush

FKBG-API Containerboard (48 times per year)

Mullen burst of linerboard

Concora test of medium

MCCA Color and Appearance (4 times per year)

Gloss at 60°

Color and color difference

CTS Rubber (4 times per year)

Tensile strength, ultimate elongation and tensile stress

Hardness

Mooney viscosity

Vulcanization properties

CTS Thermal Insulation Materials (2 times per year)

19 test methods for thermal insulation materials covering:

thermal properties; strength properties; dimensions, stability,

and density properties; fire properties; and properties of

vapor barriers

ASTM Cement (2 times per year)

Chemical (11 chemical components)

Physical (8 characteristics)

AASHTO Bituminous

Asphalt cement (2 times per year)

Cutbacks (once a year)

NBS Collaborative Reference Programs

A05 Technology Building

National Bureau of Standards

Washington, DC 20234

Rev. 3/79
~J%gn& Brow® •rf-Sai&jfcM •

FEB 2 7 1980

-CUiPL-"

CONTAINER

BOARD

&cuco

U£C*

‘TH*£l4

\Chf

c- ^

Collaborative Reference report no. 120

Program for September 1979

Contamerboard

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.

NBSIR 79-1814

**!

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 T809 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 catparing 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 Thomas L. Cummings or Jeffrey Horlick

on (301) 921-2946.

Jeffrey Horlick, Technical Administrator

NBS Collaborative Reference Programs

Office of Testing Laboratory Evaluation Technology

October 29, 1979
I
TABLE OF CONTENTS

Explanation of Tables

Instrument Codes

Use of Average Mean as a Reference Standard

Bursting Strength, Linerboard 42H12, weeks 1-2

Bursting Strength, Linerboard 42L1, weeks 3-4

Bursting Strength, Linerboard 69J2, weeks 1-2

Bursting Strength, Linerboard 69M1, weeks 3-4

Concora Flat Crush, Corrugating Medium 26D2

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 M 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 M0NTH

WEEKLY VALUES : C6DE V WK-1 WK-2 WK-3 WK-4

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
AV MEAN -

SDR -

AV SDR -

SD LABS -

NO. INCL

NO. OMIT

NOT RCD -

SD SHTS -

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.

(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'.

(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.

The average for the indicated week of the SDK'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.

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-laboratory precision of the test method as applied by the participating

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

comparable results.

The number of laboratory means included in the AV MEAN for that

week.

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)

.

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.

(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 M0NTH

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 corresponding 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 1 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

R

X

Y

Z

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

Model A, Air Clamp added

Other Model, Please Describe Instrument

Make and Model

Nonstandard Instrument or Method

Data received too late to be included

in statistical analysis

INSTRUMENT CODES

FOR

CONOORA TEST OF MEDIUM

(Column V)

Code 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 comer 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 corrugating medium:

Lot Material Codes

1 linerboard A, B,C

2 linerboard D,E,F

3 linerboard G,H, I,

J

4 linerboard K,L,M

1 corrugating medium (A)

2 corrugating medium B

3 corrugating medium C

4 corrugating medium D

Used

October 1969 - April 1973

September 1972 - September 1976

October 1976 - September 1979

September 1979 - May 1973 - March 1976

April 1976 - February 1977

March 1977 - August 1978

September 1978 -

5
LINERB0ARD 42H12 C0LLAB0RATI VB REFERENCE PR0GRAH SEPTEMBER 1979

REP0RT N0O 120

BURSTING STRENGTH ( MULLEN ) a PSI

LAB MEANS THIS MONTH THIS M0NTH CUMULATIVE

C0DE V WK-1 WK-2 WK-3 WK-4 MEAN SDR SOWS MEAN SDR SDWES WES

100 H 1240 1 1260 5 1 25o 3 8C 4 lo 7 1250 9 80 6 lo 3 12

102 H 1 27o 4 1260 3 126o 9 9o 1 o7 1 27o 9 8o 1 lo 1 12

103 I 1240 0 1230 4 123o 7 70 6 o 5 1230 3 70 8 lo 1 12

105 M 1 30 o 7 1 27o 3 1 290 0 8c 9 2g 4 1 260 4 90 6 2C 6 12

106 H 1290 6 1 2 50 9 127o 8 8o 3 20 6 127c © 70 9 30 4 12

109 H 1230 C 1 180 6 1 20o 8 9o 3 3o 1 125o 9 10c© 40 0 1 1 110 M 1330 6 1 24o 9 1 29o 2 80 5 6o 2 1 280 6 90 4 3C 3 12

11 1 M 12 50 1 1230 3 1 24o 2 90 0 lo 3 1240 7 90 0 20 6 12

112 H 1 170 5 120 o 2 1 1 So 9 70 4 1c 9 120 o © 7C 4 lo 9 12

113 R 127 0 5 1 26o 7 1270 1 70 0 o 5 125o 5 7C 4 lo 1 12

114 M 124 0 3 1 290 5 126o 9 7c 7 30 6 1 27o 5 8C 7 20 2 12

115 R i 260 a 1 27o 3 127o 0 So 8 o 4 120 o 3 80 3 40 1 1 1 117 H 1250 6 1 170 0 1 2 lo 3 10o 7 6o 1 12©o 4 8o9 30 8 12

119 H 1220 5 122o 5 6o 9 1290 8 9C 9 30 9 1 0 120 R 1

2

&o 0 1290 3 127o 6 8c 8 2o 3 1 28o 9 10o 0 30 3 1 1

121 M 1360 9X 1 33o 7 135o 32 60 7 2o 3 131 0 6 8C 9 30 1 12

123 R 1 260 8 1250 2 1 260 0 12o 0 lo 1 127o 2 a Go 2 3C 3 12

125 1 13 1 0 3 1 30 o 8 131c 1 10c 6 o 4 128o 1 lOo 0 40 3 12

127 H 1 26 0 3 1 250 5 1 250 9 6o 4 o 6 125o 1 70 4 lo 8 12

128 H 1 160 2 1220 5 1 190 3 90 3 4c 5 1220 9 10o 1 30 7 12

129 R 1 1 80 4 120 o 0 1 190 2 80 7 lo 1 1220 8 7o l 4o 0 12

130 H 1 290 7 130 o 1 1 290 9 10c 5 o 3 1240 8 90 7 40 0 12

131 R 1 2 20 7 12 2 c 0 122o 4 80 8 o 5 1240 6 9c 4 2o 9 12

133 A 130 o 0 130o @ 90 3 1280 7 8o 4 30 1 1 1 134 H 1270 3 1250 3 1 26o 3 90 4 lo 4 1 24 o 2 So 8 20 5 12

135 I 1320 2 1290 1 130o 6 12o 1 2o 2 i31 0 5 10o o 50 3 12

137 H 120o 4 1 230 3 1 21o 9 1 lo 3 20 1 1230 a 1 lo 1 2o 8 12

138 H 1 260 0 130o 4 1 20o 2 1 lo 0 30 1 1290 5 1©o5 lo 9 12

139 R 1 230 6 130o 6 1270 1 90 7 4C 9 128o 6 9C 7 2o 6 12

140 H 124 0 4 1 1

6

0 7 120c 6 5o 8 5o 4 121o 4 70 1 20 5 12

14 1 M 12 20 5 1 2 2 0 9 122o 7 To 2 o 3 121 o S 70 3 lo 3 12

142 A 1

2

1 0 2 1220 2 1 21 0 7 8o 7 o 7 121 c 1 8o 6 4c 2 12

145 H 125o 1 1 2 50 7 1 2 So 4 5o 8 o 5 121o 3 6c 8 40 3 12

147 H 1 19o 0 1 290 0 1240 0 1 lo 9 7O 0 121 0 5 1 Oo 3 3o 2 12

149 H 1 270 9 1 330 8 1 3©0 9 lOo 9 4o 1 129c 6 9c 6 2 0 8 12

151 H 12 lo 1 1 220 2 121 o 6 9C 2 08 1240 3 70 6 20 6 9

153 H 13 2o 8 129o 4 1310 l 1 lo 6 2o 4 1320 9c 6 4O 0 9

155 H 1 20o 3 1 2 lo 5 1 20o 9 1 0o 9 08 125o a 1 Oo 2 40 5 12

157 X 1 230 5 120 o 2 1210 9 90 9 2o 3 121 0 9 90 7 20 9 12

161 X 126 0 4 1 370 6X 132c 0 9o 4 7o9 1 30o 6 90 3 30 8 12

163 B 123 0 1 123o l 9o l 122o 9 8o9 20 8 1 1 165 R 1 28 0 4 127o 1 1 270 8 10o 1 c 9 1 260 7 90 3 lo 9 12

166 H 1240 8 124o 8 8o 5 1250 l 80 6 o 3 3

167 H 1 260 0 1 26o 0 1260 0 8o 4 o 0 1 240 7 9C 6 20 6 12

169 I 125o 5 1260 1 1250 8 80 6 c 4 1260 9 9c 8 3o 6 12

171 H 1 240 0 1 25o 8 1 24o 9 1 Oo 7 lo 3 125o 0 9o 4 20 8 12

172 H 1270 2 127 0 2 1 27o 2 l©o'7 oO

' 1260 4 l@o a 1 o 5 12

174 H 1 260 3 120 o 8 !23o 6 1 Oo 3 30 9 1230 9 90 8 2 0 6 12

175 H 1 2 lo 9 1230 5 122o 7 90 4 lo 1 125o 8 90 5 40 4 10

176 H 126o 3 120o 8 1 230 6 8, 4 3o 9 123o 3 lOo 2 2o 3 12

182 H 1 27o 1 1260 9 127o 0 80 4 o 1 1 25o 8 8o 6 20 1 12

184 H 1 30 o 6 1330 4 I 32o 0 1 lo 1 2C 0 1280 9 80 9 3C 3 1 1 186 I 1 2 1 0 8 123o 4 1 22o 6 60 6 lo 2 1220 8 To 5 lo 8 12

188 I 1250 4 1 260 3 125o 9 70 9 o 6 125o 6 8C 2 lo 4 12

198 R 120o 3 1 20 o 9 120o 6 6C 3 o 4 120o 6 6C 3 o 4 2

6
LINERB6ARD 42H12 COLLABORATIVE REFERENCE PROGRAM

REPORT N0O 120

BURSTING STRBNGTH (MULLEN), PSI

SEPTEMBER 1979

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

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

250 L 1 230 8 1230 1 1 23o 4 1 lc 6 o 5 1240 2 10c 4 3o 2 274 H 1240 5 1250 6 125o 1 7o 2 o 7 1 25o 6 7c 5 c 5 283 H 1230 5 12 20 7 123o 1 80 7 o 6 1 24o 3 7c 3 3 0 2 287 A 134c 4 1 290 3 1 3 lo 9 1 lo 2 3o 6 140 o IX 1 Oc 0 7o 7X

327 M 1270 5 127o 5 10o 8 123c 7 10c 2 lo 5 350 H 121o 2 1250 2 1 230 2 1 Oc 4 20 8 123c 2 90 9 4 o 0 553 M 1 28o 5 1280 4 128o 5 10o 0 o 1 130 o 8 8c 1 lo 7 562 A 14 lo 6X 140 o 2X 1 40o 9X 1 20 5 lc o 138o 6X 1 2o 5X 4C 4 568 I 1 3 1 0 6 126o 8 1 290 2 8o 6 30 4 127c 8 9o 8 3c 2 569 A 1 36 0 8X i350 ex 136o 3X 1 0o 9 o 7 132o 0* 9c 1 4o2

658 H 1240 3 1240 3 6c 2 124o 8 8c 2 3o 2 682 X 122 0 2 1230 5 122o 9 80 8 o 9 1390 4X 9C 1 1 lo IX 701 H 1 29o 5 1 30o 8 1 30o 1 9c 1 o 9 127o 7 9o 6 2o 0

WKS

11

1

12

12

12

12

12

1 09

1 1

GRAND AVERAGES

WK-1 WK-2 WK-3 WK-4 THIS MONTH CUMULATIVE

AV MEAN 1 250 5 1 250 7 AV MEAN 1 25o 6 125 c 5 AV SDR 9o2 90 0 AV SDR 9o 1 80 9

SD LABS 40 0 30 9 SD LABS 4 0 0 30 9 NOo INCL 57 60 NOc INCL 580 5 60o 7

N0C OMIT 7 6 AV SDWKS 2o 0 2o 8

NOT RCD 4 2 SD CUM MEAN 3 0 1

12 WEEKS

7

fo

*-*

fV)

*0
LINERB6ARD 42L1 COLLABORATIVE REFERENCE PROGRAM SEPTEMBER 1979

REPORT NOo 120

BURSTING STRBNGTH (MULLEN), PSI

LAB MEANS TBIS MONTH THIS MONTH CUMULATIVE

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

100 H 1 160 9 1 16 0 8 1 160 9 8c 0 o 1 1 16 0 9 80 0 o 1 2 102 H 1 14 0 7 1 180 9 1 160 8 7o 4 30 0 1 16c 8 To 4 3o 0 2 103 I 1 1

7

0 7 1 14o 0 1 150 9 50 3 2c 7 1 15o 9 5o 3 2o7 2 105 M 1 1

7

0 2 1 2©o 0 1 180 6 8c 2 20 0 1 18o 6 8o 2 2C © 2 106 H 1 120 6 1 180 6 1 150 6 7C 3 4c 2 1 15o 6 7o 3 4c 2 2

109 H 10 80 2 1 06o 2S 107o 2 8c 1 lo 4 107o 2* 80 1 lo 4 2 110 M 1 13o3 i i30 a 1 13o 6 8o 6 o3 1 13o 6 8o 6 o 3 2

11 1 M 1 1

2

0 2 1 18o 3 1 150 3 8c 2 40 3 1 15c 3 80 2 40 3 2

1 1 2 H 106o 8S 1 10o 0 108o 4 50 0 2c 2 108o 4* 5o© 2o 2 2 113 R 1 160 0 1 1 6o 0 1 16o 0 7C 4 o 0 1 16o 0 7o 4 oOM 2

114 M 1 170 5 1 160 8 1 170 2 9o 0 o 5 1170 2 9c 0 o 5 2

1 1 5 R 1 140 3 1 1

2

0 0 1 130 2 60 9 lo6 1130 2 6o 9 lo 6 2 117 H 1 13o 0 1 0 1 o 9X 107o 5 90 4 7o 8 107o 5* 90 4 70 8X 2

1 1 9 H 1 150 7 1 1 4o 0 1 140 9 9o © lc 2 1 14o 9 90 © lo 2 2 120 R 1 190 3 1 2 lo 1 120o 2 6c 3 lo 3 120o 2 6o 3 lc 3 2

121 M 1 19o 3S 1 17o 4 1 180 4 6C 1 lo 3 1 18o 4 6c 1 lo 3 2 123 R 1 04o 3X 1 08o 3 106o 3X 70 4 20 8 1 ©6o 3X 7o4 2o 8 2 125 I 1 160 0 1 1 5o 9 1 15o 9 7o 4 o 1 1 15o 9 To 4 o 1 2 127 H 1 1

2

0 4 HOol 1 11 0 3 60 4 lo 7 1 1 lo 3 60 4 lo 7 2 128 H 1 1

2

0 1 1 140 3 1 130 2 6c 7 lc 6 1 1 3o 2 60 T lo 6 2

129 R i05o ex i06o as 106o 3X 3o 9 c 7 106o 3X 3o 9X o 7 2 130 H 1 16o 0 1 15o 1 1 150 5 8o 1 06 1 150 5 80 1 06 2 131 R 1 1 5o 0 1 14 0 6 1 14c 8 60 8 o 3 1 140 8 60 8 o 3 2 133 A 1 180 0 117 o 0 1 170 5 6C 4 o 7 1 17c 5 60 4 o 7 2 134 H 1 190 8 1 190 6 1 19o 7 50 6 o l 1190 7 50 6 a 1 2

135 I 12 0 o 1 120 o 8 1 20o 5 6o 6 o 5 1 20 o 5 60 6 o 5 2 137 H 1 24o 6 1 170 8 1 2 lo 2 90 3 40 8 1 21 o 2 9o 3 4« ax 2 138 H 1 1 50 3 1 2 lo 4 1 18o 3 8o 4 40 3 1 18o 3 80 4 40 3 2 139 R 1 240 5 123o 3 1 23o 9 70 7 c 9 123c 9® To 7 o 9 2 140 H 1 15o 9 1 1 4C 2 1 15c 1 5C 2 lc 2 1 15o 1 5o 2 lo 2 2

141 M 112o 1 1 150 1 1 130 6 6o 5 2C 1 1 13o 6 60 5 2c 1 2 142 A 1 08o 5 11 lo9 1 10o 2 60 6 2c 4 110o 2 6o« 20 4 2 143 H 122o 6 1 22o 6 9C 1 1 220 6 9o 1 1 145 H 1 10o 9 1 16 0 2 1 130 6 5c 9 30 7 1 13o 6 5o 9 30 7 2 147 H 1 120 9 109o 6 1 llo 3 7o© 2o 3 lllo 3 70 © 20 3 2

149 H 1 2 lo 4 1 180 1 1 19o 8 6o 6 2c 4 1 190 8 6o 6 2 0 4 2 151 H 1 160 8 1 16 0 0 1 16o 4 80 6 06 1 16o 4 80 6 06 2 153 H 1280 9X 1240 6S 1 26o ex 9o 6 3o 0 1 26o 8X 9C 6 30 0 2 155 H 1 160 5 1 1 8 0 2 1 170 3 70 0 lo 2 1170 3 7o 0 lo 2 2 157 X 1 1 9o 1 1 150 7 1 170 4 6o 0 2o4 1 17o 4 6o 0 2o4 2

16 1 X 1 1 90 2 1 180 7 1 18o 9 7C 3 o 4 1 18o 9 70 3 o 4 2 163 H 1 10o 9 1 10o 9 60 1 1 10c 9 60 1 1 165 R 1 160 7 1 1

4

0 6 1 15o 7 6C 9 lo 5 1 15o 7 60 9 lo 5 2 166 H 1 18o 8 1 18 0 8 1 180 8 8c 1 c 0 1 180 8 8o 1 o 0M 2 167 H 1 140 6 1 120 5 1 130 6 6C 9 lc 4 1 13o 6 60 9 lo 4 2

169 I 1 1 4o 2 1 1 3o 1 1 130 7 50 4 o 8 1 130 7 So 4 o 8 2 171 H 1160 4 1 15o 0 1 15o 7 8o 4 lo 0 1 150 7 8o 4 l o 0 2 172 H 1 17o 1 1 140 1 1 15o 6 8o 0 2o 1 1 150 6 80 © 20 1 2 174 H 1 140 8 1 15o 1 1 150 0 9c 4 c 2 1 15c 0 9o 4 o 2 2 175 H 1 1 lo 9 1 1

6

0 7 1 140 3 7c 2 3o 4 1140 3 7c 2 30 4 2

176 H 1 15o 0 1 160 1 1 15o 5 8o 3 o 8 115o 5 e0 3 o 8 2 177 H 1 03o 7X 1 06 o 5 105o IX 80 1 2C 0 105o IX 80 1 2 0 0 2 182 H 1 160 3 1 1 8 0 8 1 170 6 7C 5 lo 7 1 170 6 7o 5 lo 7 2 184 H 1 170 9 1 18 0 4 1 180 2 5o 6 o 4 1 18o 2 5c 6 o 4 2 186 I 1 1

3

0 4 1 19o 6 1 160 5 60 7 4 0 3 1 16o 5 6o 7 40 3 2

8
LI NERB0ARD 42L1 COLLABORATIVE REFERENCE PROGRAM

REPORT N0o 120

BURSTING STRENGTH (MULLEN), PSI

SEPTEMBER 1979

LAB

CODE V MEANS TBIS MONTH

WK-1 WK-2 WK-3 WK-4

THIS MONTH

MEAN SDR SDWKS MEAN

CUMULATIVE

SDR SDWKS WK9

188 I 1 190 5 1 19o 1 1 190 3 7C 2 o 3 1 190 3 7o 2 o 3 2 250 L 1 03o 2X 1 03o 2X 1 O30 2X 9c 7 cO 103 o 2X 9c 7 o 0 2 274 H 1 180 5 1 17 0 7 1 1

8

0 1 6C 0 o 6 1 1 So 1 6C 0 o 6 2 283 H 1 1 So 7 1 1 5o 6 1 170 2 5c 6 2o 2 1 17o 2 50 6 2o2 2 287 A 1 170 7 1 19 0 7 1 18o 7 8C 3 1 o 4 1180 7 80 3 lo4 2 327 M 1 160 4 1 160 3 1 16o 4 7C 2 oO 116c 4 70 2 oO 2 553 M 1 1

6

0 6 1 17 0 1 1 16o 9 7o 1 o 3 1 1

6

0 9 7o 1 o 3 2 562 A 1290 7X 1260 3S 128o OX 9C 8 2o4 1 28o OX 90 8 2 0 4 2 568 I 1 28o 3XS 1150 5 121o 9 10o 8 9o 1 121 0 9 10c 8X 9 0 IX 2 569 A 1 240 2 1 220 S 1230 5 60 1 l c 0 1230 5* 6o 1 lc© 2 658 H 1 190 7 1 18o6 1 19o 1 60 9 C 0 1 19c 1 60 9 o 8 2 682 X 1 16o 0 1 16 0 5 1 160 2 5C 8 O 4 1160 2 5o 8 o 4 2 701 H 1 15o 3 1 1

8

0 1 1 16o 7 8o 6 2C 0 1 160 7 80 6 2 0 0 2

GRAND AVERAGES

WK-1 WK-2 WK-3 WK-4 THIS MONTH CUMULATIVE 2 WEEKS

AV MEAN 1 16o 0 116c 2 AV MEAN 116o 1 1 16o 1 AV SDR 70 5 70 0 AV SDR 70 3 7 0 3

SD LABS 30 6 4o2 SD LABS 30 9 30 9

NOo INCL 56 63 NOc INCL 590 5 590 5 NOc OMIT 10 5 AV SDWKS 1 o 7 l c 6

NOT RCD 2 0 SD CUM MEAN 30 5

9
LINERB0ARD 69 J2 COLLABORATIVE REFERENCE PROGRAM SEPTEMBER 1979

REPORT N0o 120

BURSTING STRENGTH (MULLEN), PSI

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

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

100 H 1550 6 1 550 5 155o 6 10c 2 o 0 15 So 3 1 lo 8 20 3 7 102 H 1570 2 1 560 9 1 57o 1 1 loO o 2 1 590 8 1 ®o 7 3 0 2 7 103 I 1 5 5 0 3 160 c © 1570 6 9C 4 3o 3 1 570 9 1 2o 0 lo 7 7 105 M 1 6 1 0 9 1 6 2o 8 162o 4 18c 7 c 6 1 560 6 170 2 5o 2 7 106 B 161c 3 1490 6 1 550 4 9c 4 80 3 1540 7 9= 5 40 8 7

109 B 1530 8 1540 9 154c 3 16c 0 o 8 15? 0 2 1 70 7 20 2 7

1 1 0 M 1550 6 1 5 20 2 1530 9 Uc 4 2c 4 155o 3 14c 5 2o9 7

1 1 1 M 15 20 0 1 58 0 6 155o 3 16c 4 4o7 1540 3 160 3 2o 3 7 112 H 1540 9S 1 52o 1 1530 5 7C 8 2c 0 154o 0 9o 6 30 3 7

1 13 R 1550 8 1 590 0 1 570 4 1 lo 2 2o 3 1 56o 8 1 Oo 8 lo 2 7

114 M 1 530 0 1 570 6 1 550 3 1 5c 7 3o 2 1 56o 3 14o 1 2o 1 7

1 1 5 R 1 580 4 1 570 8S 1 580 1 6C 2 o 5 1550 0 9o 1 40 5 7 117 H 1450 6X 1430 IX 1440 4X 14c 3 lo 8 150o 8 1 20 3 40 8 7 119 H 1530 7 153o 7 9C 6 1570 2 13c 6 30 8 6

120 R 1 5 0o 5 15 1 0 4 1 51o 0 1 30 3 o 6 1 53o 0 150 1 5 0 0 7

12 1 M 1 630 6 1580 4 S61 0 0 9o 0 3C 6 1 590 7 0 o 4o © 7

123 R 1 5 1 0 0 150 o 9 151 0 0 1 4C 9 O 1 1490 1* 1 5c 0 30 4 7

125 I 1 530 8 1550 1 1540 4 1 3C 8 o 9 155o 8 1 1c 4 lc 7 7

127 H 1 5?0 5 1 570 1 1 57o 3 1 30 0 o 2 1 56o 2 12c 2 2 0 6 7 128 H 1 59 0 7 152o 5 1 560 1 15c 2 5o 1 1550 0 1 40 8 20 5 7

129 R 1 560 9 14 4o 5X 1 50o 7 13c 0 8o 8 1 50o 7 1 lo 2 8 0 3X 7

130 H 1 570 3 150o 8 1540 1 120 5 4o 6 1 55o © 1

5

0 7 4 0 9 7 131 R 1 590 2 160o 0 1 590 6 15c 4 o 5 1 570 2 170 5 30 5 7 133 A 1 58 0 7 1 580 7 15o© 1 550 1 13c 7 50 2 6

134 H 15 20 6 1 590 5 1560 1 14c 0 4C 9 1540 7 120 1 3 0 8 7

135 I 1 6 0 o 5 1590 2 1590 9 1 8o 3 c 9 1 60o 0 160 4 80 9X 7

137 H 16 2o 6 1 570 0 1593 8 140 9 40 0 1 580 3 16o 3 4 0 0 7 138 H 1570 3 150 o 7 1540 0 17c 5 4o7 I570 5 16o 3 30 9 7 139 R 1 570 5 152o 0 1540 7 15c 9 3o 9 1 570 5 1 50 7 40 8 7 140 H 1 6 40 5 1550 1 159c 8 140 1 60 6 1 560 7 130 2 50 1 7

141 M 1 5 40 7 1560 4 1550 6 1 1c 9 lo 2 1 550 7 9o 2 lo 4 7

142 A 160o 0 1 6@o 3 1 60o 2 1 lo 5 o 2 1 530 9 1 2o 3 5C 3 7 145 H 1520 3 1 5 1 o 9 1 520 1 1 3C 9 o 3 1530 8 1 2o 3 lo 8 7 147 H 1 50o 0 1 570 0 1530 5 14c 2 4C 9 153o 1 14c 9 30 4 7 149 H 163 0 8 15 5 0 6 1590 7 16c 5 50 Q 1 60o 8 170 1 40 8 7

151 H 154o 2 1540 8 1 54o 5 1 20 6 o 4 155c 6 1 lo 1 lo 2 7 153 H 1 68 0 9XS 160 o 6 1640 8X 190 1 5C 9 1590 1 16o 5 5o 8 6

155 H 1 530 8 166o 8X 160o 3 1 6o 3 9o 2 1 59 0 8 1

7

0 7 40 6 7 157 X 161 c 0 158 0 e 1 59c 9 1 lo 4 lo 6 156c 9 12o 5 3C 9 7

161 X 1440 IX 1 6 1 o 7 1 52o 9 12c 6 120 4 1 55o 9 1 30 7 5C 6 7

163 H 1 530 7 1530 7 1 30 9 1540 1 15o 7 3 C 4 5 165 R 1 560 9 148o 7 1 52o 8 1 2o 3 5o 8 1 50o 7 13c 4 30 4 7

166 H 160o 6 1 60o 6 17c 6 1620 5* 1 4 0 6 40 3 3 167 H 1 57o 1 1 570 8 1570 4 10o 1 c 5 1 580 8 1 lc 5 30 7 7 169 I 1 560 9 15 1 0 3 1540 1 1 5c 8 4o 0 1550 4 1 50 7 4 o 0 7

171 H 1480 2 153e 5 150o 9 150 5 3o 7 1620 1* 160 1 9 0 2X 7 172 H 1480 6 1 56 0 2 1 52o 4 150 @ 5C 4 153o 5 140 0 40 5 7 174 H 1 54o 9 1590 1 1570 0 1 80 5 3O 0 1 570 6 1 60 6 2o2 7 175 H 1520 6 1 490 5 1 5 lo 1 1 3c 0 2c 2 155o 2 13c 8 3 e 2 7 176 H 1 590 2 1520 8 1 560 0 1 5o 1 40 5 1540 5 1 5o 5 6o 4 7

182 H 152C 9S 152o 6 1520 8 18c 2 o 2 1 54c 6 1 7o 7 5C 9 7 184 H 1620 6 1 590 7 1 6 lo 1 1 3o0 2o 1 156o 8 130 4 40 1 6

186 I 1 520 7 153o 4 1 530 1 1 40 4 o 4 1 530 2 13c 4 30 4 7 188 I 1550 4 155o 4 1 55o 4 12c 1 o ® 155o 6 1 20 3 lo© 7 198 R 160o 3 1 570 7 1590 0 1 2o 7 lo9 1590 0 12c 7 lo 9 2

10
LINERBOARD 69J2 COLLABORATIVE REFERENCE PROGRAM

RBPORT NOo 120

BURSTING STRENGTH (MULLEN), PSI

SEPTEMBER 1979

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

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

25 0 L 1 59 0 9 16 1 0 7 160o 8 15c 8 lo 3 162o 6* 1 ec 6 9 0 5X 7 274 H 15 So 2 1550 5 155o 4 10c 8 0 2 156o 2 1 lc 5 lc 2 7 283 H 1 560 8 1590 3 1 580 1 1 lo 1 lo 8 1 560 6 10o 8 lo 8 7 287 A 1570 4 1480 7 1530 1 1 4C 8 60 1 166 0 OX 150 4 1 lo 8X 7 327 M 163o 7 1 63o 7 90 9 157 0 5 1 30 7 80 ex 2

350 H 1480 4 1530 5 1 51 0 0 16c 5 30 6 1 520 6 1 5o 8 4 C 3 7

553 M 1 530 9 1570 3 1 5So 6 1 l c 7 20 4 1 58o 9 120 1 2o 8 7 562 A 175o OX 166 o 0X 170o 5X 1 5o 6 60 4 169o 6 X 16c 1 40 3 7 568 I 161 0 7 157o 3 1590 5 16c 1 30 l 1 55o 6 14c 8 4o 1 7 569 A 16 l 0 4 160o 1 160o 8 16c 4 loO 1 5S0 1 1 4o 8 2o9 7 658 H 1560 1 1560 1 80 5 161 0 6* 1 4o 6 3o 5 6

682 M 1 56 0 3 1 52o 0 154o 1 1 4C 7 30 0 1670 5X 1 40 7 1 I 06X 6

701 H 1 53 0 0 1 57o 9 1 55o 5 160 5 3o 4 1520 9 1 60 9 3o 0 6

GRAND AVERAGES

WK-1 WK-2 WK-3 WK-4 THIS MONTH CUMULATIVE 7 WEEKS

AV MEAN 1560 3 155o 7 AV MEAN 1560 0 15 5o 9

AV SDR 130 7 13o 8 AV SDR 1

3

0 7 1 30 8

SD LABS 4 0 0 30 6 SD LABS 30 8 4 0 0

NOo INCL 58 59 NOc INCL 58o 5 60o 7

NOo OMIT 6 7 AV SDWKS 30 0 3o 5 NOT RCD 4 2 SD CUM MEAN 20 7

11
LINERB0ARD 69M1 C6LLAB6RATI VB REFERENCE PROGRAM SEPTEMBER 1979

REPORT N0o 120

BURSTING STRENGTH (MULLEN), PSI

LAB MEANS TBIS MONTH THIS MONTH CUMULATIVE

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

100 H 1490 0 1450 1 1 470 1 1 2c 3 2o 8 147o 1 1 2c 3 2c 8 2 102 H 1 55o 6 1 560 9 1 5 60 3 a0 5 0 9 156o 3* 80 5 c 9 2 103 I 1 450 5 140 o 4 1 43o 0 9o 8 3c 6 143c 0 9C 8 30 6 2 105 M 1 480 7 1 430 6 1 46o 1 1 6c 9 3o 6 146c 1 16o 9 3o 6 2 106 H 1 39o 7 1 48o 3 1440 0 12c 1 6C 0 !44 0 0 12o 1 60 0 2

109 H 1430 2 136 0 5 1390 8 12o 5 40 7 1390 8 12o 5 4 C 7 2 110 M 1 4 30 3 1430 4 1430 4 1 lo 1 0 1 143o 4 1 lo 1 0 1 2

11 1 M 1 39o 5 1520 5 1460 0 1 5c 3 9o 2 1460 0 15c 3 9 0 2X 2 112 H 147o 8 1 490 1 1480 5 6c 4 o 9 148c 5 6c 4 0 9 2 113 R 1530 4 1 55o 9 1540 7 8 0 8 lo 7 1 54o 7 80 8 lo 7 2

114 M 1 460 7 145o 9 146o 3 13c 6 0 5 1 46 o 3 13o 6 c 5 2 115 R 1 480 7 1530 3 151o 0 806 30 2 1 51 0 0 80 6 30 2 2 117 H 14 So 2 1 38o 6 1430 4 1 lo 1 60 8 143o 4 1 lc 1 60 8 2 119 H 1 440 5 147o 4 1450 9 1 5o 2 2o 1 1450 9 1 50 2 20 1 2 120 R 1 51c 8 1440 3 1480 1 1 4C 4 50 3 148o 1 1 40 4 50 3 2

121 M 1 460 7 150 o 0 1480 4 9c 2 20 4 148o 4 90 2 2o 4 2 123 R 132o 9 1350 5 1 34o 2X 1 30 5 lo 8 1340 2X 13o 5 lo 8 2 125 I 135o 9 145o 8 l40o 9 1 lo 5 7o 0 140o 9 1 lo 5 70 © 2 127 H 1 45o 5 1 4 1 0 5 143o 5 lOo 5 2o 8 143o 5 1

0

o 5 2 C 8 2 128 I 1 40o 5 137o 2 1 3 80 8 13c 0 2o 3 1 38c 8 130 0 20 3 2

129 R 1 40© 9 1 39o 8 140o 3 80 7 c 8 140 o 3 80 7 08 2 130 B 1440 8 1 45c 7 1450 2 13c 2 06 145o 2 130 2 06 2 131 R 1 360 2 140 o 8 1 38o 5 12o 0 3o 3 1 38o 5 120 0 30 3 2 133 A 1 490 4 1490 1 1490 3 1 1 c 0 0 2 149c 3 1 lc 0 0 2 2 134 H 150o 2 150o0 1 5©o 1 8C 9 0 1 150o 1 80 9 0 1 2

135 I 1 530 2 I 6O 0 OX 1560 6 9c 1 40 8 1 56o 6* 9c 1 4 0 8 2 137 H 15©o 9 1 50 o 0 1 50o 5 14c 9 0 6 1 50o 5 140 9 06 2 138 H 1450 1 1 49 0 3 147o 2 1 5c 2 3c 0 147o 2 15c 2 3 0 0 2 139 R 1550 8 1 5 1 0 7 153o 8 13c 2 2c 9 1 53o 8 1 30 2 20 9 2 140 H 1480 5 1 48 0 0 14 80 2 8C 1 0 4 148o 2 80 1 0 4 2

141 M 1 39© 8 1420 8 1 4 lo 3 9c 4 2c 2 1 4 lo 3 9o 4 2c 2 2 142 A 1 39o 6 1 40 o 6 1 40o 1 9C 1 0 7 140o 1 9o 1 o 7 2 143 H 147o 5 147o 5 16o 0 X47o 5 1 6g 0 1 145 H 1 39© 8 15 lo 8 1 45o 8 7C 8 80 4 145o 8 7c 8 80 4X 2 147 H 1440 l 147 0 5 145c 8 10c 4 2o 4 1 45o 8 10c 4 2 0 4 2

149 H 1 450 OS 1 470 3 146o 1 1 5o 3 lo 6 1460 1 150 3 I 06 2

15 1 H 1450 l 1470 3 l46o 2 1 Oo 3 le 5 146c 2 1 0o 3 lo 5 2 153 H 1630 2X 1 54o 6 158o 9X 1 3o 4 6C 1 1 580 9X 130 4 60 1 2 155 H 1 470 2 146o 9 147o 1 1 30 4 0 2 1470 1 1 3o 4 0 2 2 157 X 1 43o 8 140 o 0 1 4 lo 9 1 5o 3 20 7 141o 9 1 5C 3 20 7 2

161 X 144o 3 1460 6 1 45o 4 14o 1 lo 6 1450 4 14o 1 lo 6 2 163 H 141 0 4 14 lo 4 10o 5 1 41 0 4 1 Oo 5 1 165 R 1470 1 1420 7 1 44o 9 10c 6 3c 1 1440 9 1 Oo 6 30 1 2 166 H 15 1 0 5 1520 4 152o 0 12c 7 0 7 1 52o 0 1 2c 7 0 7 2 167 H 1470 4 15 1 0 4 1490 4 15c 2 2 c 8 149o 4 1 So 2 2 © 8 2

169 I 1 470 4 1420 8 1 45o 1 10o 8 3o 3 1450 1 1 Oo 8 30 3 2 171 H 1440 4 1 47'o 9 146o 2 80 0 20 5 '146o 2 80 0 2o 5 2

' 17 2 H 1 390 7 1 430 9 i4i0 a 12o 0 3O 0 1 4

1

0 8 120 0 3 C 0 2 174 H 137o 2 1 47 o 9 142o 6 12c 6 7C 6 1420 6 12o6 7e 6X 2 175 H 1 490 6 1490 3 1490 5 1 30 4 0 2 1 49o 5 130 4 0 2 2

176 H 144o 9 150o 2 1 470 6 14c 2 30 8 1470 6 140 2 3o 8 2 177 H 1340 8 132o OX 133o 4X 12o 3 2o 0 133o 4X 1 2o 3 2o 0 2 182 H 1480 5 142o 9 1 45o 7 16o 9 3o 9 145o 7 16c 9 3e 9 2 184 H 1430 9 154o 4 1 49o 2 1 Oo 1 7o 5 1490 2 10c 1 70 5X 2 186 I 1 40o 2 145o 4 1420 8 1 Oo 5 30 7 1 42o 8 1 0o 5 30 7 2

12
LI NERBOARD 69J2 COLLABORATIVE REFERENCE PROGRAM SEPTEMBER 1979

RBPORT N0o 120

BURSTING STRENGTH (MULLEN), PSI

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

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

250 L 1 59 0 9 16 lo 7 160o 8 1 5C 8 lo 3 1620 6* 1 ec 6 9 0 5X 7 274 H 15 So 2 1550 5 155o 4 10c 8 0 2 1 56o 2 1 lo 5 lo 2 7

283 H 156e 8 1590 3 1 580 1 1 lo 1 lo 8 1 560 6 10o 8 lo 8 7 287 A 157o 4 14 8 0 7 1530 1 14c 8 60 1 1660 OX 15o 4 1 lc 8X 7 327 M 163o 7 163o 7 9o9 1 57 0 5 1 30 7 80 8 X 2

350 H 1480 4 1530 5 1 51 0 0 16c 5 3o 6 1 520 6 150 8 4C 3 7 553 M 1 S3C 9 1570 3 1 55o 6 1 lc 7 2o4 1 580 9 120 1 2o 8 7

562 A 175o OX 166o 0X 170o 5X 150 6 60 4 169o 6X 16o 1 4 0 3 7 568 I 161 0 7 157o 3 1 59o 5 16c 1 3o 1 1 55o 6 1 4C 8 4o 1 7

569 A 16 lo 4 I 6O0 1 160o 8 16c 4 lo© 1 50o 1 1 4o 8 2c 9 7

658 H 1560 1 1560 1 80 5 161o 6» 1 4o 6 3c 5 6

682 M 1 56 0 3 1 52o 0 154o 1 1 4C 7 3o 0 1 670 5X 1 40 7 1 I 06X 6

701 H 1 53 0 0 1 570 9 1550 5 160 5 30 4 1520 9 16o 9 3o 0 6

GRAND AVERAGES

WK-1 *3 W 8 r\> WK-3 WK-4 THIS MONTH CUMULATIVE 7 WEEKS

AV MEAN 1560 3 1550 7 AV MEAN 156o 0 15 5o 9

AV SDR 130 7 13o 8 AV SDR 1

3

0 7 13o 8 SD LABS 40 0 3o6 SD LABS 30 8 4 o 0 N0o INCL 58 59 NOc INCL 58o 5 60o 7

N0o OMIT 6 7 AV SDWKS 30 0 3o 5 NOT RCD 4 2 SD CUM MEAN 20 7

11
LINERB0ARD 69M1 C6LLAB0RATI VB REFERENCE PROGRAM SEPTEMBER

REPORT NOo 120

BURSTING STRENGTH (MULLEN), PSI

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

CODE V WK"1 WK-2 WK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDUXS

100 H 1490 0 1450 1 1470 1 1 20 3 20 8 147o 1 12o 3 2o 8 102 H 1 550 6 1 560 9 1560 3 80 5 0 9 156o 3® 80 5 0 9

103 I 1 450 5 1 40 o 4 1430 0 9C 8 30 6 143c 0 9C 8 3 0 6

105 M 1 48c 7 1 43o 6 1 4 60 1 16c 9 3C 6 146c 1 1 60 9 3o 6

106 H 1 39o 7 1 48o 3 1440 0 12c 1 6C 0 1440 © 12o 1 60 0

109 H 143o 2 1 36 0 5 1390 8 1 20 5 40 7 1390 8 1 2o 5 40 7 110 M 1 43o 3 1430 4 143o 4 1 lo 1 0 1 1430 4 1 lo 1 0 1 11 1 M 1 390 5 1520 5 146c 0 1 5c 3 9o 2 1460 0 15c 3 9 0 2X

112 H 1470 8 1 490 1 1480 5 6C 4 0 9 1480 5 60 4 0 9

113 R 1 530 4 1550 9 1 540 7 8 C 8 lo 7 1 540 7 80 8 lo 7

114 M 1 460 7 1 45o 9 1 46o 3 13c 6 0 5 146 0 3 13o 6 0 5 115 R 1 480 7 1530 3 1 51 0 0 80 6 30 2 151 0 0 806 3 0 2 117 H 1480 2 1380 6 143o 4 1 lo 1 60 8 1430 4 1 lo 1 60 8 119 H 1 44o 5 147o 4 1 45o 9 1 50 2 2o 1 1450 9 1 50 2 2o 1 120 R 1 5 1 o 8 1440 3 1 480 1 1 4C 4 50 3 148o 1 1 4o 4 50 3

12 1 M 1 460 7 1 5©o @ 148o 4 9C 2 20 4 1480 4 9o 2 2o 4 123 R 1320 9 1 350 5 134o 2X 13c 5 lo 8 1340 2X 130 5 lo 8 125 I 1350 9 1450 8 l40o 9 1 lo 5 70 0 140c 9 1 lo 5 70 © 127 H 1450 5 1 4 1 o 5 143o 5 lOo 5 20 8 143o 5 10o 5 2 0 8 128 I 1 40o 5 137o 2 1 30o 8 1 3C 0 20 3 1 380 8 130 0 20 3

129 R 1 40o 9 1 39 0 8 140o 3 80 7 08 140o 3 e0 7 08

130 H 1440 8 1 450 7 1450 2 1 3C 2 06 145c 2 13o 2 06

13 1 R 1360 2 140 o 8 1 3 80 5 120 0 3o 3 130o 5 12o 0 30 3

133 A 1 490 4 149 0 1 1490 3 1 lc 0 0 2 1 49o 3 1 lc 0 0 2 134 H 150o 2 1 50o 0 1 5®o 1 8C 9 0 1 150o 1 8o 9 0 1

135 I 1530 2 160 o 0X 1560 6 9C 1 4 0 8 1 56c 6* 9o 1 40 8 137 H 150o 9 1 50 o 0 1 50o 5 14c 9 06 150o 5 14c 9 0 6

138 H 145o 1 1 49 0 3 147o 2 15o 2 30 0 !47o 2 15c 2 3 o 0 139 R 155o 8 1 5

1

0 7 1 530 8 13c 2 2c 9 1530 8 1 30 2 2c 9

140 H 1480 5 148 0 0 148o 2 8c 1 0 4 1480 2 80 1 0 4

141 M 1 39o 8 142o 8 1 4 1 0 3 9C 4 2o 2 1 4

1

0 3 90 4 2c 2 142 A 1390 6 1 40o 6 1 40o 1 9C 1 o 7 140o 1 9o 1 0 7 143 H 147 0 5 1470 5 160 0 1470 5 16c©

145 H 1390 8 1 5 lo 8 1 45o 8 7C 8 80 4 145o 8 70 8 8 0 4X

147 H 1440 1 1 47 0 5 1450 8 10c 4 20 4 1 45o 8 10c 4 2c 4

149 H 1450 OS 1 47 0 3 1 46o 1 150 3 lo 6 1460 1 15c 3 I 06

15 1 H 1450 1 147 0 3 1 460 2 1 Oo 3 lo 5 146c 2 1 Oo 3 1 0 5 153 H 1630 2X 154 0 6 1580 9X 1 3o 4 6C 1 158o 9X 13o 4 60 1 155 H 1 470 2 1 46o 9 1 47c 1 13o 4 0 2 1470 1 130 4 0 2 157 X 1 430 8 14®o® 1 4 lo 9 1 50 3 2C 7 141 0 9 15c 3 2e 7

161 X 144o 3 1 460 6 1 45o 4 14c 1 I 06 1450 4 14o 1 I 06

163 H 1 4 1 o 4 14 1 0 4 10o 5 1 41 0 4 1 Oo 5 165 R 1470 1 14 20 7 1 44o 9 10c 6 3c 1 1 44o 9 10o 6 30 1 166 H 151 0 5 15 2 0 4 1 52o 0 12c 7 0 7 152o 0 1 2c 7 o 7

167 H 147o 4 15 lo 4 1490 4 15c 2 20 8 1490 4 15c 2 2 C 8

169 I 1 470 4 1420 8 145o 1 1 0 o 8 30 3 145o 1 1 0o 8 3o 3

171 H 1440 4 1 47'o 9 146o 2 80 0 20 5 146o 2 80 0 2o5

172 H 1 390 7 1 43 0 9 141 0 8 1 2C 0 3O 0 141c 8 1 2c 0 3 C © 174 H 137o 2 147o9 1420 6 12c 6 7o 6 142o 6 12o6 7C 6X

175 H 1 49o 6 1490 3 1490 5 1 30 4 0 2 1 49o 5 130 4 0 2

176 H 144o 9 150o 2 147c 6 14c 2 30 8 1 47o 6 14o 2 3o 8 177 H 1340 8 1320 OX 133o 4X 120 3 2o 0 133o 4X 1 2o 3 2 0 0 182 H 1480 5 142o 9 1450 7 16o 9 30 9 1 450 7 16o 9 30 9 184 H 1430 9 154 0 4 1490 2 1 Oo 1 7o 5 1 490 2 10c 1 70 5X

186 I 1 40o 2 145o4 1 420 8 1 Oo 5 3o 7 1 420 8 l Oo 5 3c 7

1979

VJ K 8

2

2

22

2

22

2

22

2

2

2

22

2

2

22

2

2

2

2

2

2

2

2

22

2

2

2

* 2

2

2

2

2

22

2

12

tom

m

to

w

to

to

to

to

ro

to

>-

to

to
LINERBOARD 69MI COLLABORATIVE REFERENCE PROGRAM

RBPORT N0o 120

BURSTING STRENGTH (MULLEN). PSI

SEPTEMBER 1979

LAB

CODE V

MEANS THIS MONTH

WK-1 WK-2 WK-3 WK-4

188 I 1 44o 6 1490 3

250 L 1420 0 13 io 1 274 H 15

1

0 6 1 52o 8

283 H 1520 2 150 o 1 287 A 1 47o 6 147o 4 327 M 1430 3 1 440 9

553 M 1 450 9 141o7

562 A 1 560 0 1490 4 568 I 132o 1 142o 8

569 A 1 51o 5 150o 8 658 H 1 57o 9 1 56o 5 682 X 1 39o 7 1450 4 701 H 1450 9 14 30 4

THIS MONTH CUMULATIVE

MEAN SDR SDWKS MEAN SDR SD'SKS

1470 0 90 3 3C 3 147o 0 9o 3 30 3

1 36o 5 13c 6 70 7 1 36o 5» 1 30 6 70 7X

1 52o 2 ?-» oo

-4 o 8 1 520 2 10c 7 o 8 151o 2 1 lc 6 lc 4 151 0 2 1 lo 6 lo 4

1 470 5 13c 1 o 2 1470 5 130 1 o 2

1440 1 1 30 8 lo 1 1440 1 1 3C 8 lo 1

1 43o 8 1 lo 0 30 © 1 43o 8 1 lo 0 3o C

1 52o 7 1 4o 6 40 7 152o 7 1 40 6 4o7

1 370 5 1 lc 0 7o 5 1370 5«- 1 lo 0 7o 5X

1 5 lo 2 13c 6 o5 151 0 2 13c 6 o 5

1570 2 1 lc 0 lo© 1570 2® 1 lo 0 lo©

1420 6 1 4C 8 4*0 @ 1420 6 1 4o 8 4C ©

1 440 7 1 lo 3 lo7 1440 7 1 lc 3 lo 7

WKS

2

2

2

22

22

2

GRAND AVERAGES

WK-1 WK-2 WK-3 WK-4 THIS MONTH CUMULATIVE

AV MEAN 1450 7 1460 9 AV MEAN 146o 3 146o 3

AV SDR 1 lo 5 12c 0 AV SDR 1 lo 8 1 lo8

SD LABS 5o 7 So 0 SD LABS 50 3 So 3

N0O INCL 61 62 N0C INCL 6 lo 5 6 lo 8 N«c OMIT 5 6 AV SDWKS 2o9 2o4

NOT RCD 2 0 SD CUM MEAN 4 0 5

2 WEEKS

13

(VJ

CVI

CVJ

<VJ

(\J
CGRRUGo MEDIUM 26D2 COLLABORATIVE REFERENCE PROGRAM

REPORT N00 120

FLAT CHOSE STRENGTH (CONCORA), LB

SEPTEMBER 1979

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

CODE V BE- 1 WK-2 WK-3 WK-4 MEAN SDR SDWKS MEAN SDR SDRES HKS

100 720 1 730 9 72o 7S 720 7 720 9 4c 8 c 7 73o 5 40 2 o e 16

102 690 4 71 0 1 7 1 o 9 71 0 5 7 1 0 0 3o 1 lo 1 72o 0 3o 0 o 9 14

105 73 0 0 730 0 74 0 2 72o 7 730 2 3C 8 o 7 75o 7 4o 1 20 7 16

106 7 2o 9 730 4 730 8 74 0 S 730 7 2o 9 o 7 730 4 3o 6 o 7 16

1 1 0 730 4 720 3 7 2o a 72o 9 30 5 06 73o 1 30 8 lo 1 15

1 1 3 7 1 o 0 7 20 2 7 1 o 3 7 lo 4 7 1 0 5 2o7 o 5 71o 6 2o 8 o5 16

114 70 o 8 7 1 0 0 70o 5 690 3 70o 4 20 6 o 7 70o 7 30 0 o 8 16

1 1 5 770 4 7 5 0 4 75© 7 740 0 75o 6 40 5 lo 4 740 6 30 9 lo 5 15

119 70 o 5 68o 0 69o 3 690 3 30 6 1 c 3 690 7 4o2 1 o 6 14 120 6 S 0 6 690 9 720 4 70o 6 3o 7 lo 5 70o 0 30 4 lo 3 14

125 80 o 5X 8 lo OX 790 4 84 0 8 X 8 lo 4X 5o 0 20 3 79c 9X 5o 2X 2 0 2 16

128 720 9 7 2o 8 70o 6 72o 0 720 1 2o 9 lo 1 72o 6 30 3 lo© 16

138 760 8 730 3 76o 3 74o 0 75o 1 4c 2 lo 7 75 0 1 40 4 1 o 4 15

140 750 2 74 0 8 750 1 74 0 1 74o 8 40 1 o 5 760 2 4o 4 lo 8 16

143 730 4 730 4 3o 6 72o 9 2o 9 o 9 1 1

151 70 o 8 70o 6 730 2 7 lo 5 4o 6 lo 4 690 3 4o 1 3© 0 7

161 750 5 690 4 71o 2 7 Oo 2 7 1 0 6 5o 0 20 7 . 720 5 4o7 20 6 16

164 7 1 0 1 70o 1 70o 7 70c 4 70o 6 3c 7 o 4 680 4* 30 6 2© 7 1 1 167 730 5 74e 4 720 3 730 3 73o 4 4C 1 o 9 72o 7 3C 8 lo 2 16

177 690 1 680 5 68o 8 30 5 o 4 70 o 7 3o 7 lo 5 14

182 820 OX 8 1 0 7X 760 9S 80 o 2X 80o 2X 4C 7 20 3 780 6X 4o 3 2 o 2 16

188 70o 1 720 6 70o 6 7 1 0 3 7 lo 2 3o 1 lo 1 72o 3 30 4 l c 6 16

198 670 5 67o 6 670 6 40 4 o 1 67o 6» 4o4 o 1 2 237 *Z 7 1 0 8 73o 5 730 8 740 3 730 4 30 9 1 c 1 72o 0 3o 9 lo 6 1 1 250 7 1 0 6 720 1 70o 7 69o 2 70o 9 2o 3 lc 3 7

1

0 2 2o 4 lo 2 1 1 269 71 0 1 720 2 720 9 7

1

0 7 72o 0 3c 8 o 7 72o 3 3o 7 lo 1 16

274 73 0 0 720 9 72 0 8 720 8 72o 9 2o 8 c 1 720 9 3C 0 o 3 16

283 7 3 0 5 740 0 750 1 740 5 740 3 3o 1 o 7 720 5 30 2 2o 1 14 284 6 3 0 4X 64o OX 70o 5 69o 7 660 9 30 6 3o 7 690 4 30 7 3c C 16

237 730 4 760 8 73o 3 75c 2 74o 7 30 7 lo 7 74 0 5 3o 9 2o 1 16

289 530 3X 650 1XS 660 8 6 lo 7X 3C 7 7o4 6 1 0 9X 3C 2 70 4X 15

292 670 1 70o© 690 8 7 lo 1 690 5 3o 3 lo 7 67o 6* 3C 4 3o 4 16

350 850 9X 830 1XS 840 5X 5c 5 lo 9 840 3X 4o7 3 0 4 14 351 7 1 0 4 730 5 71o 2 7 lo 7 72o 0 2C 1 lo 0 720 0 20 5 o 9 16

353 70o 6 70o 7 750 1 690 1 7 1 0 4 30 4 2C 6 72c 4 30 6 lo 9 16

355 790 2 72o 9 730 3 72o 7 740 5 4o 1 30 1 730 4 30 3 2 © 1 16

357 7 5o 0 7 3o 9 7

4

0 3S 740 4 5o 2 o 5 740 6 4o 0 lo 6 14 36 1 7 20 6 70o 7 680 8 690 5 70o 4 30 3 lo 7 70o 9 30 3 lo 8 15

363 650 0 680 0 67o 0 67 0 9 67o 0 4o 3 lc 4 6 80 7 30 6 2C 4 16

365 690 3 67o 4 680 4 65 o 0X 67c 5 30 7 lo 9 70 o 0 3o 3 2 O 0 16

367 750 8 750 1 780 5X 760 5 4o 1 lo 8 740 4 4o 3 20 1 14 36 9 72o 0 7 3c 4 720 0 7 1 o 9 72o 3 30 3 o 7 720 8 30 3 o 7 16

377 77o 5 730 8 740 5 740 9 750 2 30 8 lo 6 750 5 4C 1 lo 4 15

379 730 8 730 8 720 1 74 0 9 73o7 40 5 lc 2 730 5 40 2 lo 3 15

381 7 1 0 7 720 5 720 8 73 0 0 72c 5 30 5 c 6 71o 4 3o 5 lo 1 14 383 74 0 1 73©6S 750 9 750 5 740 8 2o 1 lo 1 74© 1 3o 6 3© 9X 16

385 69o 0 690 3 76o 6 760 1 720 8 5o 1 40 1 730 4 4o 8 3© 1 16

387 6 S 0 8 7 20 6 740 3 730 1 72o 5 30 5 lo 9 730 5 30 7 lo 9 16

391 690 0 7

0

o 9 7 lo 6 7 1 o 0 70o 7 3C 8 lc 1 680 9 30 3 20 8 16

393 740 9 7 5 0 8 720 6 74o 9 740 6 4c 1 lc 4 730 3 30 9 20 5 16

395 73 0 1 7 30 5 750 8 730 3 730 9 4o 1 lo 3 73o 2 30 7 lo 1 16

397 750 1 74 0 3 730 1 730 1 73o 9 30 8 l o 0 730 9 3o 9 1 o 4 16

399 76o 6 760 5 690 4 74o 2 30 7 4o 1 740 4 30 9 2o 1 14

553 720 8 680 8 6 80 8 67 0 2 690 4 20 7 20 4 7 lo 9 30 0 2o 0 16

55 5 740 1 720 9 730 6 75o 2 74c 0 2C 0 lo 0 740 2 2o 5 2o 1 16

14
CORRUGc MEDIUM 26D2 COLLABORATIVE REFERENCE PROGRAM

REPORT N0o 120

FLAT CRUSE STRENGTH (CONCORA), LB

SEPTEMBER 1979

LAB MEANS THIS MONTH THIS MONTH CUMULATIVE

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

56 2 7 0 o 3 7 io e 740 7 730 5 720 6 4o 2 lo 9 7 lo 4 4o 1 lo 7 16

568 66 0 4 72o 7 730 6 720 2 7

1

0 3 2o9 3o 3 70o 0 30 3 30 2 16

572 7 lo 0 740 1 770 7 7 lo 9 73o 7 30 7 3o 0 74c 4 3c 8 2o 6 15

578 690 4 6ec 7 67o 2 7 50 2 70o 1 40 3 3o 5 69o 3 40 4 9 0 OX 16

60 9 76 0 6 76o 9 770 2 750 6 76o 6 30 3 o 7 74c 1 3o 7 3c 5 16

617 770 7 77 o 4 77 o 9 74 0 4S 76o 9 4o e lo 7 79o OX 6C 3X 3c 9X 16

WK-1 WK-2 WK-3 WK-4 THIS

GRAND

MONTH

AVERAGES

CUMULATIVE 16 WEEKS

AV MEAN 72o 4 72o 5 72o e 72o 3 AV MBAN 720 5 720 6

AV SDR 3c 7 3o a 3o 3 3o 6 AV SDR 3o6 30 6

SD LABS 30 1 2c 4 20 8 2o 3 SD LABS 2c 7 2o5

NOo INCL 50 52 56 51 NOc INCL 52o 2 520 4 NOc OMIT 6 5 2 5 AV SDWKS lo6 1 o 7

NOT RCD 5 4 3 5 SD CUM MEAN 2o 1 SD SHTS lo 9 2o 1 2o 0 2o2

15
NBS-114A (REV. 9-78)

U.S. DEPT. OF COMM. AtfC«Si08 No. BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. FKBG CRP 120

4. TITLE AND SUBTITLE

CONTAINERBOARD

Collaborative Reference Program for Containerboard

Report #120

5. Publication Date Oct. 29, 1979

7. AUTHOR(S)

T. L. Cummings, J. Horlick

8. Performing Organ. Report No. NBSIR 79-1814

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, DC 20234

11. Contract/Grant No.

12. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS (Street, City. St*te, ZIP) Collaborative Testing Services, Inc., 9241 Wood Glade Drive,

Great Falls, VA 22066; and American Paper Institute/

Fourdrinier Kraft Board Group

13. Type of Report & Period Covered Final

15. SUPPLEMENTARY NOTES

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

16. ABSTRACT (A 200-word or leaa factual summary of moat 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

For Official Distribution. Do Not Release to NTIS

I | Order From Sup. of Doc., U.S. Government Printing Office, Washington, DC ~ 20402, SD Stock No. SN003-003-

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

19

22. Price

USCOMM-DC