A 1 1 1 Q t. T 7a^7t

MANUFACTURERS COUNCIL ON

COLOR AND APPEARANCE

COLLABORATIVE REFERENCE PROGRAM

COLOR AND APPEARANCE

COLOR AND COLOR DIFFERENCE

J. Horlick

Office of Testing Laboratory Evaluation Technology

Office of Engineering Standards

National Engineering Laboratory

FOR

QC

100

, 1)56

T. L. Cummings

CTS-NBS Research Associate

79-1379

iy7y

C.2

U. S. DEPARTMENT OF COMMERCE

National Bureau of Standards

NBSIR 79-1379

INTRODUCTION

fe^csral* -i-areati 64-‘Sia£‘v

' FEB 2 7 1980

n&t (\cc- Cure

is ft / aa

U £4

MTj

c>"

This Collaborative Reference Program is sponsored by the Manufacturers

Council on Color and Appearance and the National Bureau of Standards.

Four times per year, color chip samples are distributed to each participating laboratory. After the data has been returned to and

analyzed by NBS, a report (as illustrated by this report) showing

the data from all participants is prepared.

Reflectance values for 40 wavelengths and colorimetric data for 45/0

reflectance factor have been provided by NBS. For further explanation,

see page 20. A plot of the spectrophotometric curves of the samples

was provided by Hemmendinger Color Laboratory, Belvedere, New Jersey.

The NBS Reflectance values have succeeded the tentative values which

were given in previous reports.

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

in general, contact J. Horlick on 301-921-2946.
'ii* ;

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1

2

3

4

6

8

9

11

12

13

14

16

18

19

20

21

23

TABLE OF CONTENTS

Introduction

Table of Contents

Key to Tables

AE Calculations

Table of Instrument Codes

Analysis of laboratories in X, Y, Z space, normal

data, samples C95-96

Analysis of laboratories in X, Y, Z space, normal

data, samDles C97-98

Analysis of laboratories in L, a, b space, normal

data, samples C95-96

Analysis of laboratories in L, a, b space, normal

data, samples C97-98

Explanation of WHITE Sample Data

Ratios of laboratories in X, Y, Z space, WHITE sample

Ratios of laboratories in L, a, b space, WHITE sample

(results according to values converted to X, Y, Z space)

Analysis of laboratories in X, Y, Z space, adjusted

data, samples C95-96

Analysis of laboratories in X, Y, Z space, adjusted

data, samples C97-98

Analysis of laboratories in L, a, b space, adjusted

data, samples C95-96

Analysis of laboratories in L, a, b space, adjusted

data, samples C97-98

Motes on NBS Reflectance Values

Reflectance at 40 wavelengths, 45/0 Reflectance factor,

C95 , 97, W15

Spectrophotometric curves of samples C95, C96, C97

C98, W15
T- '

. : "i ,

•

r

,

. - ....

. .

: ' /

, 1 f J.;

*

?r;
KEY TO TABLES

MEAN The average of individual test determinations.

GRAND MEAN - (GR. MEAN)The average of the individual laboratory MEANS,

excluding laboratories flagged (see column F)

with an X, #, or +.

SD OF MEANS -

INST CODE -

F

-#

-

M - X -

0 -

The standard deviation of the laboratory MEANS

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

Code for instrument type and color space used

to report measurements, see first table.

Flag, is based on aE Column with following meaning:

Excluded because data were not understood; because

of a non-coded variation reported by the laboratory

or data received late.

Excluded because data for one sample are missing

Excluded from all calculations because AE is beyond

(3) standard deviation units.

Included in grand means but results are between

two and three standard deviation units. The

participant should take this as a warning to

reexamine his testing procedure.

Included in grand mean analysis.

Note: In addition to flag (F) based on delta E column it is also possible

to have either a X or an * on individual MEANS as follows:

X - following a MEAN signifies that the mean is greater than 3 SD of

MEANS from the GRAND MEAN. The values for this laboratory have

been omitted in the calculations involving the MEAN for the

col umn.

* - following any of the MEANS signifies that that quantity is greater

than 2 but less than 3 of the appropriate standard deviations from

the corresponding average. The participant should take this as a warning to reexamine his testing procedures.

AE - Total color difference between two samples. In X, Y, Z analysis it is

calculated in MacAdams (FMC II) units. For L, a, b analysis it is

calculated in Hunter units.

l
aE Calculation

aE is calculated in the Color and Color Difference Collaborative

Reference Program by the FMC2* equations (X, Y, Z analysis) as follows:

The yellow-blue chromatic difference is

AC

] = K

1 S(PAP + QAQ)/bD

2

- K

] AS/b;

the lightness difference is

AL = 0.279K

2 (PaP + QAQ)/aD;

and the red-green chromatic difference is

AC

3

= K^QaP - PAQ)/aD.

The quantity, D, is an abbreviation,

D = (P

2 + Q2

) "12

.

K-j = 0.55669 + 0.049434 Y - 0. 82575 • 1 0" 3Y

2 +

0. 791 72 • 1

0

_5

Y

3

- 0. 30087- 1

0

_7

Y 4

,

K

2 = 0.17548 + 0.027556 Y - 0.57262- 10" 3 Y

2 +

0.63893- 1

0

-5

Y

3

- 0. 26731 • 1 0” 7 Y 4

,

a

2 = 17.3-1

0~ 6

(P

2 + Q

2 )/1 1 + 2.73P 2 Q

2 /(P 4 + Q4

)],

b

2 = 3.098* 1

0

_4

(S

2 + 0.2015 Y

2

)

P = 0.724 X + 0.382 Y - 0.098 Z,

Q

= -0.48 X + 1.37 Y + 0.1276 Z,

S = 0.686 Z,

AE = [ ( AC i

)

2 + (AL)2 + (AC

3

) 2 ]^

*Friele-MacAdam-Chickering metric

2
ANALYSIS C70-1 TABLE 1 COLOR A COLOR DIFFERENCE

INSTRUMENT IDENTIFICATION

INST COLOR DATA

CODE INSTRUMENT SPACE CODE

C7 0AC ACS SPECTRA SENSOR X Y Z 9014 C70BL B»L 505 SPECTROPHOTOMETER X Y Z 9014

C7 0CA CARY 14 X Y Z 9014 C70CD COLOR EYE SMALL SPHERE X Y Z 9014 C70CE COLOR EYE SMALL SPHERE XX * YZ, 4 V 9016

C7 0CF COLOR EYE SMALL SPHERE XYZ,BaS04 9017

C7 0CG COLOR EYE SMALL SPHERE XX'YZ.Ba 9018 C70CH COLOR EYE SMALL SPHERE XYZ.3V 901 1 C70CL COLOR EYE LARGE SPHERE XX' YZ, 4

V

9016 C70CM COLOR EYE LARGE SPHERE XX' YZ, Ba 9018

C7 0CN COLOR EYE LARGE SPHERE XYZ, BaS04 9017 C70DC DIANO CHROMASCAN SPECTROPHOTOMETER X Y Z 9014

C7 0DH DIANO MATCH SCAN SPECTROPHOTOMETER XYZ 9014 C70DK DIANO/LSCE AUTOMATE XYZ, BaS04 9017 C70DL DIANO/LSCE AUTOMATE XYZ, 3 V, 4F 9019 C70DM DIANO/LSCE AUTOMATE XX ' YZ, 4V 9016 C70DS DIANO/SSCE AUTOMATE XX 11 YZ. Ba 9018 C70DT DIANO/SSCE AUTOMATE XYZ, BaS04 9017

C7 0GA GARDNER AUTO AC2/AC3 Lab 9013 C70GB GARDNER AUTO AC2/AC3 XYZ 9014

C7 0GC GARDNER XL-20/XL-30 SERIES XYZ 9014 C70GD GARDNER XL-20/XL-30 SERIES Lab 9013 C70GE GE/DIANO/HARDY SPECTROPHOTOMETER XYZ 9014

C7 0GK GARDNER XL-70 XYZ 9014

C7 0GL GARDNER XL-70 Lab 9013

C7 0GM GARDNER MULTIPURPOSE REFLECTOMETER XYZ 9014 C70GP GARDNER XL-200 SERIES Lab 9013 C70GX GARDNER XL- 10 Lab 9013 C70GY GARDNER XL- 10 XYZ 9014 C70HA HUNTER D25A (DA.D1A.D2A) Lab 9013 C70HB HUNTER D25A <DA,D1A,D2A) XYZ 9014 C70HF HUNTER D25AA Lab 9013 C^OHG HUNTER D25AA XYZ 9014 C70HM HUNTER D25M (DM.D1M,D2M) Lab 9013 C70HN HUNTER D25M (DM.D1M.D2M) XYZ 9014 C70HP HUNTER D25P (DP.DIP.D2P) XYZ 9014 C70HQ HUNTER D25P (DP.D1P.D2P) Lab 9013 C70HR HUNTER D25A <DA,D1A,D2A) Rd a b 9012 C70HT HUNTER D54 SPECTROPHOTOMETER XYZ 9014 C70HC HUNTER D54 SPECTROPHOTOMETER Lab 9013 C70IB IBM SPECTROPHOTOMETER XYZ 9014 C70KC KCS-18 XX 1 YZ,4V 9016 C70KD KCS-18 XX' YZ, Ba 9018 C70KS KCS- 1

8

XYZ 9014

C70KT KCS-40 XYZ 9014 C70LS LERES TRILAC XYZ 9014 C70LT LERES TRILAC XYZ, 3Y 901 1 C70MD MACBETH MS2000 SPECTROPHOTOMETER XYZ 9014 C70ME MACBETH MS200 0 SPECTROPHOTOMETER Lab 9013

C7 0MG MACBETH MCI 010 Lab 9013

C7 0MH MACBETH MCI 010 XYZ 9014 C70MS MARTIN SWEETS XYZ 9014

C70MT MARTIN SWEETS XX* YZ, Ba 9018

C7 0ND NEOTEC 220 DU COLOR RGB 9015

C7 ONE NEOTEC 220 DU COLOR XYZ 9014 C70SA SPECIAL INSTRUMENT - INCLUDED XYZ 9014 C70SB SPECIAL INSTRUMENT - INCLUDED Rd a b 9012 C70SC SPECIAL INSTRUMENT - INCLUDED Lab 9013

C70SL SPECIAL INSTRUMENT - INCLUDED RGB 9015 C70SP SPECIAL INSTRUMENT - EXCLUDED XYZ 9014 C70SQ SPECIAL INSTRUMENT - EXCLUDED Rd a b 9012 C70SR SPECIAL INSTRUMENT - EXCLUDED Lab 9013 C70SS SPECIAL INSTRUMENT - EXCLUDED RGB 9015 C70ZD ZEISS DMC25 XYZ 9014 C70ZE ZEISS ELREPHO XYZ 9014 C70ZF ZEISS ELREPHO RGB 9015 C70XX GIVE INSTRUMENT MAKE MODE

L

0 NOT SPECIFIED 9020

FORMAT OF COLORMETRIC (INPUT) DATA

DATA CODE COLOR SCALE

9011 X, Y, Z 3 FUNCTION VITR6LITE CORRECTION

9012 Rd, a ,

b

9013 L , a, b HUNTER 9014 X. Y, Z 9015 R,G,B

90 16 X.X' ,Y, Z 4 FUNCTION VITROLITE CORRECTION

9017 X.Y.Z, BaS04 CORRECTION

90 18 X.X' ,Y, z BaS04 CORRECTION

9019 X, Y, Z 4 FUNCTION VITROLITE CORRECTION

9020 ( NON -STDo INSTo SCALE SPECIFIED WITH DATA)

3
REPSRT N6. 26 MCCA COLLABORATIVE REFERENCE PROGRAM 1978-1979

X, Y, Z SPACE ANALYSIS, NORMAL DATA COLOR COLOR DIFFERENCE

LAB SAMPLE C95 SAMPLE C96 DIFFERENCE C96 - C95 INST CODE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE C0DE LAB

Ci 57 6 2 8 0 69 42,47 35, 84 27.97 41,46 35, 93 -.72 -1.01 • .09 * 3, 02 70GE C 1 57

Cl 62 0 29,09 41,97 37,39 28, 33 41.07 37,41 • o 76 * -.89 * . 02 * 3,24* 70 DC C 162 C244 0 29,78 42, 52 35, 13 2 9, 57 41,87 35,64 -o 20 -.65 .50 2, 43 70ZE C244

C250 e 28,60 41,60 37,20 28, 20 41. 00 37, 67 -.39 -.60 .47 2, 58 70ZF C250

C25 1 0 29,07 42,35 36,26 28, 68 41,90 36,73 -.39 -.45 .47 2,71 70ZE C25 1 C253 6 29,64 43, 03 35, 01 29,30 42, 57 35,54 -.34 -.47 .52 2,50 70 GC C253

C27 8 0 31.65X 43,35 41 ,30X 31. 0 5X 42,65 41, 55X 60 -.70 .25 2,92 7 ONE C27 8 C37 2 X 29o 88 42,90 36,60 29, 10 42. 19 36,91 -. 78 * -.70 .31 4, 38X 70ZE C37 2 C4 07 0 30 o 1 8* 42,75 37,49 29, 53 41,95 37.74 -o 65 -.80 . 24 3, 14 70 BL C407

C41 2 0 29, 6 1 43,00 36,55 28,95 42, 17 36,77 -.66 -.82 . 22 3, 14 70GE C412

C4 1 4 0 29,07 42,01 35, 85 28,45 4 1.25 36,09 -.62 -.76 . 24 3, 04 70MD C41 4 C416A e 29,42 42,87 36,31 28, 86 42, 18 36,64 -.56 -.68 .34 2, 97 70GE C416A

C416B X 30,82X 44, 23X 35 o 72 30,59X 43©97X 35, 44 -.23 -. 26 -. 28 X , 54X 70 IB C416B

C4 17A e 29,06 42,32 36,42 28, 51 41.65 36,79 -. 55 -.67 .38 3, 06 70GE C417A

C41 8 0 28,22 41, 13 35,57 27.82 40,67 36. 07 -.39 -o 46 . 50 2, 83 70CE C41 8 C422 0 28,59 41,29 34, 13 28. 14 40.72 34.56 -.45 -.57 .43 2, 80 70GC C422

C42 4 0 29,34 42, 53 36,76 28.98 42.08 37, 29 -.36 -.45 „ 53 2,65 7 OCA C424

C42 8 0 28,74 42, 02 34,58 28,35 4 1,53 35,11 -.39 -.49 . 53 2,81 70HB C42 8 C437 0 29,89 42,83 39, 18* 29,52 42,36 39,68X -. 36 -.47 o 50 2,55 70CE C437

C44 3 0 29,49 42, 25 36, 04 29, 16 41,78 36,72 -o 32 -. 47 o 68 2,79 70CN C443

C44 4 0 29,04 42,27 36,88 28,64 41.75 37.32 -.40 -.52 .44 2,62 70GE C 44 4 C44 5 0 29,38 42, 53 36,90 29, 12 42.20 37,60 -.26 -.32 .70 2,67 70LS C445

C446A 0 29,13 42,34 36,34 28,70 41,81 36, 83 -.43 -.52 .49 2, 83 70GE C446A

C45 1 0 29, 1 5 42, 15 36,23 28, 78 41,71 36.75 -.37 -.44 . 51 2,71 70AC C45 1 C453 0 30,40* 43,52* 35,92 30, 02* 43,07* 36, 42 -.38 — . 45 . 50 2,65 70HT C453

C4 5 5 0 29,38 42,70 37, 12 28,97 42, 18 37, 59 -.41 -.52 .47 2,71 70KS C455

C459 0 28,78 41, 83 35,78 28, 34 41.27 360 22 -.44 -.57 .44 2, 79 70GE C459

C46 0 0 29,04 42,32 35, 83 28, 56 41.72 36,22 -.48 -.60 .39 2,8 1 70GE C46 0 C462B 0 29,05 42, 10 34,55 28, 80 41,80 350 20 -. 25 -. 30 .65 2, 58 70GE C462B

C46 3 0 28,87 42, 12 36,22 28,60 4 1,76 36, 87 -.27 -.36 .65 2,60 70 ZD C 463

C469 0 29,30 42, 81 36,34 28,90 42,30 36, 83 -.40 -.51 . 49 2,70 70GE C469

C47 0 0 28,89 42, 03 37, 08 28, 59 41,64 37.68 -. 30 -.39 .60 2, 56 70 DH C470

C472 0 29, 1 7 42, 05 36,98 28,74 41,50 37,41 -.43 -.55 .43 2,67 70KT C472

C473 0 29,05 42,28 36,98 28. 69 41.84 37,51 -.36 -.43 .52 2,65 7 OGE C47 3 C47 4 0 28,73 41, 82 35,88 28, 41 41,41 36.40 -.32 -.41 .52 2,53 70GE C 47 4 C47 6 0 28,83 42, 16 36, 16 28,30 41, 50 36,54 -. 53 -.68 .37 2,98 70SA C476

C479A X 28,35 41,50 35,60 27,75 40,90 34.95 -.60 -.60 -.65 X 1 o 76X 70GB C479A

C479B 0 29,85 43, 10 38,27* 29, 27 42.53 38.33 -.58 -.57 . 06 * 2,75 70SA C479B

C48 0 0 29,29 42,47 35,00 28, 81 41,91 35. 48 -.47 -„ 56 .48 3, 04 70 HB C480

C4 8

1

0 31, 59X 42,95 47 , 0 1

X

31.43X 42,45 47.68X -. 16 -.50 .67 2, 16* 70CF C48 1 C483 0 28,99 42,30 35,78 28,67 41.80 36,26 -.31 -.50 .47 2, 26* 70 ZF C483

C49 5 0 29,42 42, 54 37,44 29, 05 42.08 37,98 -.37 -.46 .55 2,70 70 KS C49 5 C496A 0 29,12 42,52 36,31 28,66 41,93 36.73 -.46 -.59 .43 2, 78 70GE C496A

C499C 0 3 1 , 05X 44,71

X

36,07 30, 86X 44. 17X 36,64 -. 19 -.55 .57 2, 18* 70BL C499C

C50 3 0 28,76 41,91 36,45 28, 25 P o l\j 00 36, 80 -. 51 -.63 .36 2, 85 70GE C503

C5C8 0 29,28 42,69 35,79 29.04 42.39 36,44 -.23 -.31 .64 2, 45 7 OGE C50 8 C51 1 0 29,02 42, 15 36,44 28, 58 4 1,59 36,88 -.45 -. 56 . 44 2, 79 70 DH C51 1 C52 1

A

0 29,27 42,92 36,20 28,95 42,49 36,78 -. 33 -.43 .57 2,60 70CA C521A

C52 IB X 28,56 41, 50 35,89 29,66 43. 15* 38, 08 1. 10 X 1.64 X 2. 19 X 3, 48X 70SA C521B

C522 0 28,77 41, 80 35, 00 28, 55 4 1 . 50 35, 80 -.23 -.30 . 80 « 2,83 70 SA C522

C52 4 0 29,64 42,93 36,92 29,31 42. 50 37.42 -.33 -.43 .51 2, 47 70GE C524

C52 8 0 28,74 41,62 36,13 28, 44 41,26 36,67 -.30 -.37 .54 2, 50 70MD C52 8 C532 0 27,72* 40, 43* 38,60* 27.42 40. 00* 39,21* -. 30 -.43 .61 2,59 70GE C53 2 C53 4 0 28,86 41,66 35,69 28,42 41, 12 36. 09 -.44 -. 55 „ 40 2, 70 70MD C534

C54 0 0 29,65 42,81 36,69 29. 07 42,10 36,99 -. 58 -.71 .30 2,97 70GE C54 0 C545 0 27,50* 40,28* 34. 09 27.33* 40,04* 34, 83 -. 17 -.24 .74 2, 53 70GC C545

C547 0 27,99 41,47 35.24 2^o 50 40.84 35,61 -. 49 -.63 .37 2, 86 70HP C547

C54 8 0 28,01 41,20 33.60* 27,39* 40,40 33, 82* -o 62 -. 80 .22 2, 99 70 SB C54 8 C552 0 28,18 41,10 33,39* 28, 14 41,02 34,33 -. 04 -. 08 * .93 X 2, 56 70HN C55 2 C612 0 28,88 42, 19 36, 16 28. 56 41,79 36,72 -.32 -.41 . 56 2, 59 70GE C61 2

C6 13 0 29, 1 4 42,74 36.71 28,71 42.22 37, 17 -. 43 -.53 .46 2,76 70MD C61 3 C619 0 28,00 41,70 35,30 27.60 41,10 35.70 -.40 -o 60 .40 2 0 48 70 SA C61 9 C627 0 29,67 42,26 36.52 29, 0 1 41.47 36.68 -. 66 -.79 . 16 3, 03 70SA C627

C6 29 0 28,61 41,93 34, 14 27,91 4 1,06 34.31 -.69 -.86 . 16 3, 18 70HN C629

C630 0 29,37 4 2,43 36.77 28.65 4 1,56 36,91 -.72 -.87 .14 3, 25* 70KS C630

4
V REPORT NA, 26 MCCA COLLABORATIVE REFERENCE PROGRAM 1978-1979

X, Y, Z SPACE ANALYSIS, NORMAL DATA COLOR COLOR DIFFERENCE

LAB SAMPLE C95 SAMPLE C96 DIFFERENCE C96 - C95 INST CADE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE CODE LAB

C631A 0 29 0 38 42.30 36.81 28.65 41.39 36.90 -.73 * -.91 * .08 • 3, 15 70AC C631A

C63IB ft 290 43 42.45 36.39 28. 85 41.75 36.62 -.58 -.70 .24 2. 85 70AC C631B

C632 6 29 c 37 42.33 36.52 28. 88 41.72 36. 92 -.49 -.61 .40 2. 67 70AC C632

C634 e 28« 00 40.80* 34.33 27. 58 40.21 * 34.70 -.42 -.59 .37 2.52 70CE C634

C63 8 0 28 e 60 41.60 34.70 28.30 41.20 35.30 -.30 -.40 .60 2.61 70GT C638

C639 0 28© 341. 17 36. 94 28. 03 40.71 37.44 -. 35 -.45 .50 2.60 70 DH C639

C644 0 29.05 42. 00 35.95 28. 55 41.39 36. 32 -. 50 -.61 .37 2.83 70MD C64 4 C645 0 29 0 53 42o 47 36 0 67 28. 88 41.68 36.90 -o 65 -.78 .23 3. 14 70 AC C645

C656 0 29.37 42.27 35.92 28.91 41.73 36o 34 -.46 -.54 .42 2. 86 70 SA C656

C657 0 28.51 42.63 34. 00 27.98 41.96 34.30 -.53 -.68 .30 2.83 70AC C657

C661 0 27.31* 41.04 36. 02 26.90* 40.47 36© 46 -.At -. 58 .44 2. 68 70GE C661

C66 2 0 28.13 42. 09 33.72 27.69 4 1.52 34. 11* -.44 -.57 .39 2.68 70DH C662

C66 4 0 28.66 41. 14 35.33 28. 12 40.43 35.63 -o 54 -.71 .30 2.84 70 KC C664

C671A 0 28.53 41.45 35.37 28. 1 1 40.93 35.78 -.42 -.52 .41 2.66 70DH C671A

C671B 0 28.21 41.00 36.27 27.90 40© 54 36.86 -.31 -.46 .59 2.56 70DH C671B

C671C 0 28.68 41.54 34.24 28.29 41. 02 34.68 -.39 -.52 .44 2.55 70GC C671C

C671D 0 28.97 42. 04 34.78 28.49 41.50 35. 16 -. 48 -.55 .38 2.87 70HB C671D

C672 0 28.70 41.20 34.15 28.20 40.50 34.50 -.50 -.70 .35 2.73 70GC C672

C675 0 29.22 42. 15 36.23 28.76 41.57 36.63 -.46 -.59 .40 2.76 70 AC C67 5

GRAND MEANS

28.96 42. 1 1 35.97 28. 53 41.56 36.36 -.43 -.56 .43 2.75

SD 0F MEANS

.58 .65 1.14 .57 .65 1.06 .15 . 16 .16 .23 INCLUDED LABS F0R

76 THIS78 MEAN

77 76 78 76 79 79 78 79

5
REPORT NS. 26 MCCA COLLABORATIVE REFERENCE PROGRAM 1978-197?

X, Y, Z SPACE ANALYSIS, NORMAL DATA COLOR COLOR DIFFERENCE

LAB SAMPLE C97 SAMPLE C98 DIFFERENCE C98 - C97 INST CCDE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE C6DE LAB

Cl 57 X 90 28 5© 63 X 14.08 8© 58 5.56X 13© 66 • o 70 X -.07 -.42 13© 25X 70GE C 1 57

Cl 62 G 9 0 97 * 7© 30* 14.41 9© 77* 7.24* 14© 09 ** o 21 -. 06 -.32 2©09 70DC C 16 2 C2 4 4 e 8*82 6.35 14.35 8©71 6. 35 14© 05 “ o 1 1 . 00 -.30 1 o 60 70ZE C244

C25 0 g 9© 6 1 * 7. 10* 14.70 9. 68* 7.00 14© 41 “ e 13 -.10 -.30 ©88 70 ZF C250

C25 l G 9*16 6.40 14. 05 8.75 6.20 1 3© 46 • o 41 -.20 -.59 2©68 70ZE C25

C253 6 9.02 6.50 14.47 8© 59 6© 21 13© 79 •o 43 -.29 -.68 1.62 70GC C253

C27 8 e 8.20* 6. 50 12.40X 8© 15 6.60 1 2o 30* *• 05 .10 -.10 • 3©38 7 ONE C27 8 C37 2 G 6© 53 6.62 14.41 8© 17 6.37 13.75 •« 36 -.26 -.66 1 o 44 70 ZE C37 2 C4 07 6 9.31 6. 66 14.65 8.68 6.58 13.94 •• 43 -.27 -.70 1.70 70BL C407

C412 G 9.32 6.83 14.68 6.90 6.56 13.97 * e 42 -.27 -.71 1 o 55 7 OGE C412

C41 4 G 6.88 6.45 13.91 8© 50 6.22 13.26 • c 38 -.23 -.65 1 o 59 70MD C41 4 C416A g 8©56 6© 06 13.86 8© 40 6. 00 13© 43 •c 16 -.05 -.42 1© 23 70GE C416A

C416B e 9.02 6.57 14.64 8.73 6.43 14© 14 -O 29 -. 14 -. 50 1 o 64 70 1

C416B

C41 7A 6 8©78 6.31 13.97 8. 57 6.24 13© 56 • 0 21 -.06 -.41 1.88 70GE C417A

C4 1 8 G 9.52 6© 78 14.40 9©25 6.66 13.97 ® o 27 -.12 -. 43 1© 98 70CE C 4 1 8

C42 2 G 8.53 6© 11 13. 59 8© 39 6.12 13© 22 •© 13 . 00 -.37 2© 12 70GC C422

C424 G 9.36 6© 78 14.71 9© 17 6© 75 14.32 -© 19 -.03 -.39 2© 37 7 OCA C424

C4 2 8 G 9.11 6. 56 14.65 8.92 6.53 14© 27 ® o 19 -. 03 -.38 2©51 70HB C42 8 C4 37 X 9.46 6.68 13.92 9. 16 6. 64 1 3© 61 • • 30 -.04 -o 30 4©93X 70CE C437

C44 3 G 8.95 6© 46 14.29 8© 87 6.55 14© 02 “ o 08 .09 -. 27 3© 27 70CN C443

C44 4 G 9.24 6.69 14.33 9© 09 6.72 1 4. 01 “ o 14 .04 -.32 3. 13 70GE C44 4 C44 5 G 9.64 7© 10* 15. 18* 9. 42 7.08 1 4. 76* c 22 -.02 -.42 2© 98 70LS C445

C446A G 9.04 6. 55 14.13 9© 00 6.69 13.94 -© 04 . 14 -.20 3© 80 70GE C446A

C451 G 9. 1 0 6.69 14. 09 8.95 6©69 13.69 ® o 14 . 00 -o 40 2© 09 70 AC C45 1 C453 G 9©C4 6.72 14.96 8©88 6©72 14© 54 • o 16 . 00 -.43 2© 44 70 HT C453

C4 5 5 G 9. 1 1 6.65 14. 10 9© 06 6.78 13.91 “ o 05 .13 -. 19 3© 64 70KS C455

C459 G 9.00 6.54 14.07 8© 96 6.68 13© 89 • c 04 . 14 -. 19 3© 72 70GE C459

C46 0 G 8.89 6. 51 14.27 8© 82 6.61 13.99 ® o 07 .10 -.28 3© 06 70GE C460

C462B G 8.80 6. 40 14. 40 8© 70 6©40 1 4© 00 • o 10 c 00 -.40 1© 30 70GE C462B

C463 G 8.95 6©43 14. 09 8© 90 6© 53 13.85 ” c 05 .10 -.24 3. 03 70ZD C 463 C469 G 8.66 6. 05 14.01 8.33 5. 88* 13©38 - 0 33 -. 17 -.63 1.72 70GE C469

C47 0 G 9.30 6©71 14.30 9© 21 6. 81 14© 10 • o 09 .10 -.20 3© 78 70DH C47 0 C472 G 9.24 6.70 14.22 9© 21 6© 83 1 40 03 -© 03 . 13 -. 18 3© 31 70KT C47 2 C473 G 8.74 6.33 13.76 8© 70 6.47 13© 56 “ o 04 .15 -.20 4© 00* 70GE C473

C4 74 G 8.88 6. 44 14. 19 8© 88 6.61 14© 04 • 00 . 17 -.15 3.68 7 OGE C474

C476 G 8.85 6.39 14.31 8. 55 6© 1 5 13© 74 m . 31 -.24 -.57 1© 46 70 SA C47 6 C479A X 7©95X 6.25 12.80* 7© 75* 6.45 1 2.35* • o 20 .20 -. 45 8© 47X 70GB C479A

C479B G 9© 87* 7© 37 X 14.73 9© 52* 7© 19* 14.69 •c 35 -. 18 -.04 • 4© 24* 70 SA C479B

C48 0 G 9© 1 2 6© 6

14.73 9© 02 6.67 1 4© 40 -O 10 . 06 -.33 2© 72 70 HB C480

C4 81 G 1 1.29X 7. 6 1 X 18.38X 1 1. 06X 7. 56X 1 8 0 00 X -» 23 -.05 -. 38 2© 49 70CF C48 1 C483 G 8©96 6© 60 14.29 8© 92 6©60 1

C 05 • e 04 .00 -.24 ©73 70ZF C483

C49 5 G 9.11 6.68 13.96 8© 77 6. 49 13. 36 ® © 35 -. 19 -.60 1.60 70 KS C495

C496A G 8.96 6.45 14. 17 8.75 6.39 13© 81 •o 21 -.06 -.36 2© 26 70GE C496A

C4 99C G 9.54 7.10* 16.24X 9© 37 7.07 1 5© 88X “ o 17 -.03 -.37 1 © 98 70BL C499C C503 G 9.19 6.64 14.37 9.01 6©62 1 3© 98 ® • 18 -.01 -. 39 2© 49 70GE C503

C5C 8 G 9© 15 6.56 14.75 8.92 6.48 14© 31 “ • 23 -. 06 -.44 lo 94 70GE C 50 8 C51 1 G 9.09 6© 59 14. 17 8© 85 6.51 1 3 0 76 © 24 -.07 -.41 2. 29 70DH C51 1 C52 1 A G 9. 10 6.60 14.49 8© 85 6.48 14. 06 -O 25 -. 1 1 -.43 1.66 70CA C521A

C521B G 9.17 6.62 1 4 © 4 1 9.38 6. 88 14© 58 0 22 X o 26 * .16 X 2© 49 70SA C52 IB C52 2 G 8©62 6©77 13.70 8. 30 6.60 13© 15 32 -. 17 -.55 2© 04 70 SA C52 2 C524 G 9©40 6©94 14.86 9.21 6© 9

14© 39 - 0 20 -.03 -. 48 2© 21 70GE C 524

C52 8 G S.l-r 6.69 14.23 9. 03 6.72 13. 88 “ . 14 . 03 -.35 2.68 70MD C52 8 C532 G 9 0 4

6©66 13.21* 9© 26 6© 71 1 2© 97 -O 14 . 05 -.25 3© 51 70GE C 532 C534 G 8.88 6. 09 13.83 8© 73 6© 12 1 3© 49 -O 15 .03 -.3 5 3© 14 70 MD C534

C54 0 G 9.58 7. 12* 14. 84 9© 31 7.01 14. 42 " © 27 -.10 -. 41 2© 48 70GE C540

C54 5 G 8©46 6© 1 1 13.58 8© 05* 5© 84* 1 2© 93 - e 41 -.27 —o 65 1© 77 7 OGC C545

C547 G 8.81 6.39 13.75 8© 60 6.34 13.33 ” e 21 -.05 -.41 2© 33 70HP C547

C54 8 G 8.21* 5. 85* 13. 26* 8. 14 5.95 13© 02 * • 07 . 10 -. 24 3© 49 70 SB C548

C552 G 8.78 6© 32 14. 4 1 8. 75 6.46 14© 19 “ o 03 . 13 -.22 3.42 70 HN C552

C6 1 2 G 8© 8 8 6.44 14. 07 8.66 6.37 13© 64 ” . 22 -. 06 -o 43 2© 15 70GE C612

C613 G 8.74 6. 54 13.28 6. 44 6© 39 12. 77 ® • 30 -.15 -. 51 1© 88 70MD C61 3 C6 1 9 G 8.70 6. 20 13.60 8© 50 6.10 13.20 -O 20 -.10 -.40 1© 02 70 SA C61 9 C627 G 9.28 6.74 14.42 9© 04 6.66 14©02 • • 23 -. 08 -. 40 2© 18 7 OSA C627

C6 29 G 8.91 6.39 14.46 8. 74 6© 38 14© 07 ® o 18 -.01 -.39 2© 41 70 HN C629

C630 G 9.C3 6.56 14.33 8.71 6.39 13.71 *o 32 -.17 -.62 1© 46 70 KS C63 0

6
RE PART N0. 26 MCCA C0LLAB0RATI VE REFERENCE PR0GRAM 1978-1979

X, Y, Z SPACE ANALYSIS, NORMAL DATA C0L0R C0L0R DIFFERENCE

LAB SAMPLE C97 SAMPLE C98 DIFFERENCE C98 - C97 INST C0DE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE CODE LAB

C631A 0 9.11 6.62 13.95 8.76 6.42 13.32 -0 35 -.20 -.63 1. 45 70AC C63 IA C63 IB a 9.13 6. 63 14. 08 8. 85 6.48 13. 54 • o 28 15 -. 54 1.38 70AC C631B

C632 e 9.00 6. 54 14.04 8. 80 6.46 13. 55 -. 21 08 -.49 1.36 7 0 AC C632

C634 6 9.22 6.80 14.22 8. 85 6. 57 13. 56 -.37 -.24 -.66 1. 42 70CE C634

C63 8 0 8.50 6. 10 13.60 8. 20 5. 90* 13.00 -c 30 -.20 60 1.22 70GY C638

C639 e 9. 19 6.62 13.88 8. 88 6.46 13.36 - o 30 -. 16 -o 52 1.57 70DH C639

C644 e 8.95 6.53 13.94 8. 72 6. 44 13. 43 -o 24 09 -. 50 1. 59 70MD C644

C645 0 9.01 6.56 14. 03 8. 82 6.51 13. 57 -c 19 -.05 -.46 1.74 70AC C645

C656 0 9.03 6.59 14.35 8.65 6.29 13. 67 -. 38 -.30 -.68 1.78 70 SA C656

C6 57 6 8.83 6.67 12.88* 8.46 6.45 1 2.34* -.37 -.22 -. 53 1. 92 7 OAC C657

C661 0 9.13 6.76 12.28X 8. 73 6.51 1 1.72X -.39 -.25 -o 56 1.62 70GE C66 1 C66 2 0 8.71 6. 53 13.02* 8.41 6.34 12. 45* -.30 -. 19 -.57 1. 25 70 DH C66 2 C664 0 8.52 6. 18 13.30 8. 29 6. 07 12.78 -.23 -. 10 -. 53 1.36 70KC C664

C671A 0 9.16 6.68 14.25 8.95 6.63 1 3. 80 -. 21 -. 06 -.45 2. 16 70DH C671A

C67IB 0 9.20 6.71 13. 89 8. 83 6.50 13.35 -.36 -.21 -.54 1.83 70DH C67 1

C6 7 1

0 8.95 6.41 14. 19 8. 64 6.24 13.67 -.31 -. 17 -. 52 1.55 70GC C671C

C671D 0 8.93 6.55 14.56 8.52 6.24 13. 88 -o 41 -.31 -.68 1.67 70HB C671D

C67 2 0 e.eo 6.30 13.95 8. 4 0 6. 10 13. 40 -.40 -. 20 -. 55 2.87 7 OGC C672

C67 5 0 9. 1 1 6.60 14. 04 8. 79 6. 46 1 3. 55 -. 33 -. 14 -.49 2. 59 70AC C 67 5

GRAND MEANS

9.02 6. 56 14. 16 8. 81 6.50 13.72 -.22 -.07 -.43 2. 23

SD 0F MEANS

.33 .26 .45 .35 • 29 .52 . 12 . 13 . 16 .81 INCLUDED LABS F0R

79 THIS MEAN

78 76 79 79 77 79 80 79 80

7
REPORT NO© 26 HCCA COLLABORATIVE REFERENCE PROGRAM

L, a, b SPACE ANALYSIS, NORMAL DATA COLOR COLOR DIFFERENCE

1978-1979

LAB SAMPLE C95 SAMPLE C96 DIFFERENCE C96 - C95 INST

C0DE F MEAN L MEAN A MEAN B MEAN L MBAN A MEAN B AL AA AB AE C0DE LAB

Cl 2 1 X 64* 20 -35. 90 X 12.70 630 80 -35.00 1 1. 80 -.40 .90 X -.90 1.33X 70HM C 1 2 1 Cl 2

2

0 64 © 50 -33.50 13.30 64.20 -33.50 12.30 -.30 c 00 -1.00 1.04 70HM C 122

C 1 4 8 0 64 0 95 -34.40 14.20 6 4. 50 -34.40 13. 25 -.45 -©00 -.95 1.05 70HA C 1 4 8 Cl 50 0 64.94 -33.99 13.03 64.39 -34.03 1 2. 90 -.55 -.04 -.93 1 o 09 70 HA C 1 5 0 C 1 5 2 0 65 e 05 -33.C0 13.80 64.50 -33.00 12. 80 -© 55 -.00 -1.00 1. 14 70 HA C 1 52

Cl 66 0 64.55 -33.65 13.30 64. 25 -33.65 12.40 -. 30 -.00 -.90 o 95 70 HA C 166

C 1 8 3 4 64.85 35.05X 13.80 64. 55 35.20X 12.90 -.30 . 15 * -.90 e 96 70 HA C 1 83 C213 0 64.40 -33.20 13.60 64. 10 -33.20 12.70 -. 30 -. 00 -.90 .95 7 OHM C 2 1 3 C2 23 6 65.95 -33.60 13.40 65.55 -33.60 1 2.45 -. 40 -c 00 -.95 1. 03 70 HA C223

C230 0 65.C2 -34. 1

1

13.79 64. 49 -34. 04 12.85 -. 53 .07 -.95 1. 09 70 HA C230

C24 1 X 64.75 -33. 50 12.90 64. 45 -33.50 12.40 -. 30 -© 00 -o 50 X „ 58X 70 HA C241

C2 55 0 65.40 -33.90 13.75 64.95 -33.85 12.80 -.45 .05 -.95 1.05 70 HA C255

C25 6 0 64.44 -34. 04 13.73 64. 05 -34.02 12.80 -o 39 .02 -.93 1.01 7 OHM C256

C259 0 64.05 -33. 75 14. 05 64.35 -33.70 13. 10 -. 50 .05 -.95 1.07 70 HA C259

C26 2 0 65.59 -33.55 12.81 65. 23 -33. 50 1 1. 86 -.36 . 05 -.95 1.02 70 HR C26 2 C285 0 64.95 -34.35 13.40 64.75 -34.35 12.50 -.20 . 00 -.90 .92 70 HA C285

C28 8 0 64.95 -34.25 13.50 64. 80 -34. 15 12. 55 -. 15 * . 10 -.95 .97 70 HA C288

C29 1 0 64.95 -33.75 13.90 64. 65 -33.70 13. 00 -. 30 • 05 -.90 . 95 70 HA C 29 1 C317 0 64.50 -34.30 13.70 64. 00 -34.30 12.80 -. 50 . 00 -.90 1.03 70 SC C31 7 C32C 0 65.74 -33.34 13.14 65.34 -33.34 12. 10 -. 40 .00 -1.04 * 1.1 1 70 HA C320

C325 0 65.42 -34.35 13.04 65. 08 -34.31 12. 10 -.34 .04 -.93 o o o 70 HR C325

C34 0 0 65.52 -32. 86 12. 13 64.96 -32.82 11. 17 -. 56 o O -.96 1. 1 1 70 HA C340

C35 2 0 65.25 -34. 15 13.80 64.65 -34.15 12. 85 -.60 o 00 -.95 1. 12 70 HA C352 C356 0 64.60 -33.90 13.30 64. 10 -33.90 12.30 -o 50 -. 00 -1.00 1. 12 7 OHM C356

C38 0 0 65.05 -33. 60 13.90 64.60 -33. 50 13. 00 -.45 . 10 -.90 1.01 70 HA C380

C382 0 64.85 -34.30 13.40 64. 40 -34.25 1 2. 40 -. 45 . 05 -1. 00 1. 10 70 HA C382

C40 2 0 65. C2 -33.65 13.77 64. 48 -33. 58 12.79 -. 54 .07 -.99 1. 13 70 HA C402

C4 2 7 0 64.90 -33.30 13. 50 64.45 -33.25 1 2. 50 -.45 . 05 -1.00 1.10 70 HA C427

C44 0 0 65.15 -34. 04 13.81 64. 89 -33.99 1 2.90 -.26 . 05 -.91 o 94 70 HA C44 0 C44 2 0 64.30 -33.30 12.60 64. 00 -33.30 11.70 -. 30 . 00 -.90 .95 70HM C44 2

C45 4 0 66. 05* -32.90 13.60 65.65 -32.92 12. 67 -.40 -.02 -.93 1.01 70 HA C454

C4 56 0 65.08 -33.88 13.80 6 4. 70 -33.88 12. 08 -. 38 . 00 -.92 o 99 70 HA C456

C4 5 8 0 64.51 -34. 04 12.67 64. 19 -34.01 1 1. 74 -.33 . 03 -.94 1.00 70HM C45 8 C47 5 0 65 0 44 -33 0 ei 12.35 65. 07 -33.75 11.42 -•37 . 06 -.93 1. 00 70HA C475

C477 0 65.98 -34.34 12.61 65.49 -34. 24 11.65 -.49 o 09 -.95 1. 08 7 0HA C477

C494 0 65.25 -34.50 1 1.60* 64.95 -34.45 1 0.60* -.30 . 05 -1. 00 1. 05 7 0HA C494

C496B 0 63.40X -32.40* 12.50 63. 20* -32.30* 1 1. 50 -.20 • 10 -1. 00 1. 02 70GP C496B

C499A 0 64.75 -34.20 13.85 64. 35 -34.20 12.90 -. 40 . 00 -.95 1. 03 70 HA C499A

C499B 0 64.95 -33.75 13.90 64. 35 -33.75 1 2.90 -. 60 . 00 -1.00 1.17* 70 HA C499B

C5C6 0 64.90 -33.50 14.10 64.65 -33.50 13.20 -. 25 . 00 -.90 .93 70 HA C506

C51 7 0 65.00 -32.30* 1 1.70* 64. 60 -32.20* 1 0. 80* -.40 . 10 1 O o *99 70 SC C51 7 C538 0 65.70 -26. 80 X 8.70X 65. 20 -26.70X 7. 60X -.50 • 10 -1.10 X 1.21* 70GX C53 8 C54 1 0 64.90 -34. 15 13.35 64. 50 -34.00 1 2. 40 -.40 . 15 » -.95 1. 04 70GP C54 1 C542 0 64. 1 1 -33.88 13. 07 63. 88 -33.65 12.10 -.23 .23 X -.97 1.02 70GD C54 2 C543 0 64.73 -33.93 13.69 64. 52 -33.87 12.78 -o 22 . 05 -. 91 o 94 70 HA C543

C574 0 65.40 -34. 25 12.00 65. 05 -34.15 11.10 -. 35 • 10 -.90 • 97 70HQ C574

C576 • 42.35X 33. 22 X 14.23 42. 13X 33. 2 1

X

13. 34 - o 2

1

-.01 -.89 o 9 1 70HM C 576 C585 0 64.87 -33.39 13.37 64. 41 -33.37 12. 44 -. 47 • 02 -.94 1. 04 70 HA C585

C6C0 0 65.20 -33.70 13.40 64. 70 -33.70 12.45 -. 50 . 00 -.95 1. 07 70GD C60 0 C619 0 64.60 -35.50* 12.70 64. 20 -35.40* 1 1. 80 -. 40 o 10 -.90 • 99 7 OHO C61 9 C620 0 65.55 -32.65 12.29 65.30 -32.69 11.40 -.26 -.04 -„ 89 .93 70 HA C62 0 C628 X 71 .67X -41.41

X

14.99* 71. 10X -41.56X 13.79 -o 57 — © 15 X -1.20 X 1.34X 70ME C620

C633 0 64.61 -35.25* 14.37 64.31 -35.22* 13. 42 -. 49 .04 -.95 1. 07 70 HA C633

C64 0 0 65.82 -33.80 11.87 6 5. 50 -33.74 1 0.96 -.32 . 06 -.91 o 97 70ME C64 0 C646 X 62.53X -28.31

X

6.34X 62. 05X -28. 53X 5.75X -.48 — . 22 X -. 58 X . 79X 70CG C646

C6 4 8 0 66.37* -32.48 13.97 65. 93* -32.44 13.04 -.43 .04 -.94 1.03 70 SC C64 0 C6S 5 0 64.84 -33.38 11.91 64. 32 -33.30 10.96 -o 52 .08 -.95 1.08 70 HU C655

C674 0 65.05 -33. 85 13.50 64.65 -33.85 1 2.60 -. 40 . 00 -.90 .98 70HA C67 4 C677 0 65.31 -32.27* 12.38 64. 83 -32.29* 1 1.43 -.48 -.02 -.95 1.06 70SC C677

C69 0 0 64.20 -33. 30 14.05 63.75 -33.40 13. 20 -.45 -. 10 » -. 85 * o 97 70HM C69 0

GRAND MEANS 65.06 -33.73 13.27 64. 63 -33.69 12.32 1 0 o 03 -.94 1.03 SD 0F MEANS

• 49 .65 • 71 .52 .64 o 71 . 1

1

. 05 .04 0 o INCLUDED LABS FOR THIS MEAN

53 S3 53 54 S3 53 54 53 53 54

8
RE PART N0. 26 MCCA COLLABORATIVE REFERENCE PROGRAM

L, a, b SPACE ANALYSIS, NORMAL DATA COLOR COLOR DIFFERENCE

LAB SAMPLE C97 SAMPLE C98 DIFFERENCE C98 - C97 CODE F MEAN L MEAN A MEAN B MEAN L MEAN A MEAN B AL AA AB AE

Cl 21 0 25© 0 0 14. 40X -29. 20X 25. 20 13. 30 X -28. 20X .20 -1.10 lo 00 1. 50

Cl 22 0 25©40 18. 30 -15.60 25. 40 17.20 -14. 80 . 00 -1.10 . 80 1.36

Cl 4 8 0 25© 7

0

18. 05 -15.80 25. 40 17. 15 -15. 15 -.30 -.90 o 65 1.15

Cl 50 0 25©88 17.87 - 15.54 25. 57 16.82 -14. 89 -o31 -1© 04 o 66 1.27

C 1 5 2 0 25© 80 17.90 - 16. 10 25.30 17. 10 -15© 40 -. 50 -. 80 o 70 1. 17

Cl 66 0 25*50 17.85 -15.40 25. 50 16.70 -14.70 . 00 -1. 15 .70 1. 35

C 1 83 ft 25©35 1 8.65 - 16.00 25.40 17.45 -15.25 . 05 - 1. 20 .75 1.42 C213 0 25*20 1 8. 00 -15.80 24.90 17.00 -15.20 30 -1.00 . 60 1. 20 C223 o 250 60 17. 00 -15.20 25.45 15.95 -14. 50 -. 15 -1.05 o 70 1.27 C230 o 25.75 18.44 -15.60 25. 07 17.61 -15.22 -. 68 -. 83 o 3 5 1. 14

C24 1 X 25© 7

0

23.55X -15.40 25.25 16. 7 0 -14.70 -.45 -6. 85 X o 70 6. 90X

C2 5 5 0 25.70 18.70 -15.70 25. 20 17.95 -15. 20 -. 50 -.75 .50 1.03 C256 0 25.37 18. 24 -15.91 24. 74 17.60 -1 5. 51 -.62 -.64 .40 .97 C259 0 25©60 18.40 -16. 00 25.20 17.65 -15.50 -. 40 -.75 .50 o 99 C262 0 25.30 17.35 -15.41 25. 04 16.43 -14. 84 -. 26 -•92 .57 1. 12

C2 85 0 25©45 18. 15 -15.00 25. 10 17.35 -14. 40 -. 35 -.80 .60 1. 06 C288 O 25©45 18.45 -15.80 25. 40 17.40 -15. 00 -. 05 -1© 05 . 80 1.32 C29 1 0 25.20 1 8. 00 -16.40 25. 40 16. 80 -15.40 .20 -1.20 1.00 1. 57 C317 0 25.10 19.10 -15. 80 25.20 17.90 -14. 90 . 10 -1.20 .90 1. 50 C320 0 25.21 17.28 -14.74 25. 05 16.00 -14.00 -. 16 -1.28 .74 1. 49 C325 0 25.00 18.73 -15.66 25.00 17.34 -14. 79 . 00 -1.39 .87 1.64 C34 0 0 25©4 7 16. 71 -13.87* 25. 02 15.94 -13© 45* -o 45 -.78 .42 o 99 C352 0 25.60 1 8.50 - 16.00 25© 30 17.80 -15. 30 -. 30 -.70 .70 1.03 C356 0 25.30 18.50 -15.80 24.90 18.00 -15.20 -. 40 -. 50 ,60 . 88 C380 0 25.50 1 8. 40 -16. 00 25. 10 17.60 -1 5.30 -. 40 -« 80 .70 1. 14 C382 0 25.60 19. 10 -15.40 25. 10 1 8.40 -14.70 -. 50 -. 70 .70 1. 1 1 C402 0 25.65 17.68 -15. 80 25. 17 16.85 -15. 17 -. 48 -. 83 . 63 1. 14 C427 0 25.00 1 8.40 - 16© 25 25. 05 17.30 -1 5.35 . 05 -1.10 .90 1. 42 C44 0 0 25© 78 18.58 -15.52 25. 81 17.22 -14.65 . 03 -1.37 . 88 1.62 C44 2 0 25.40 17.40 -15.00 25. 50 16.10 -14. 10 o 10 -1.30 . 90 l. 58 C454 0 25© 1 1 17.07 - 15.82 25. 30 15.62 -14.79 o 19 -1.45 1. 03 1. 79* C456 0 25.48 18. 14 -15.85 25. 60 16.76 -14. 85 o 12 -1.39 1. 00 1. 71 C4 50 0 25.39 18.27 - 14.86 25.61 16.94 -13. 90 • 22 -1.33 .96 l. 65 C47 5 0 25.42 17. 26 -14.75 25. 06 16.30 -14. 18 -© 35 -.96 .57 1. 17 C477 0 25.42 17.87 - 14. 04* 25. 25 16.90 -,13. 42* 17 -.97 .62 1. 16 C494 0 26.60* 15. 80* -13. 05X 26. 00* 1 5.40 -1 2.90X -. 60 -.40 * .15 * . 74* C496B 0 24.50* 16.50 -14.60 24.60 1 5.60 -13. 80 . 10 -.90 . 80 1.21 C499A 0 25.50 18.15 - 16. 10 25. 50 17.00 -15. 30 . 00 -1.15 .80 1. 40 C499B 0 25.60 17.90 -15.80 25.30 17. 10 -15.20 -.30 -.80 .60 1. 04 C506 0 25.40 18.25 -16.20 25© 70 17. 00 -15.20 . 30 -1.25 1. 00 1.63 C517 0 25. 10 1 8© 10 -15.20 25. 10 17.00 -14. 50 © 00 -1.10 .70 1.30 C53 8 0 25.90 19.20 - 14.30 25.45 18.40 - 1 3. 90 -.45 -.80 .40 1.00 C54 1 6 24.40* 18. 50 -15.70 24. 50* 17.25 -1 4© 90 . 10 - 1. 25 o 80 lo 49 C54 2 0 24.29* 19. 22 -15.77 24. 25* 1 8.25 -15. 04 -. 03 -o 97 .73 1.22 C54 3 0 25.67 17.79 - 16.20 25. 70 16.61 -15© 22 . 03 -1.18 .98 1. 54 C574 0 25.40 1 7. 60 -14.80 25. 30 16.55 -14. 10 -. 10 -1.05 .70 1.27 C57 6 n 8.06X 22.35X 14.38X 8. OOX 21.23X 1 3. 6 1 X -© 06 -1© 12 -.77 X 1. 36

C5 85 0 25.58 17.54 -16. 06 24.97 16.85 -15. 64 -.61 -.69 .43 1.01 C600 0 25.90 17. 10 - 14.40 25. 60 16.20 -13© 80 -. 30 -.90 .60 1. 12 cei 9 0 25.00 CD o N O -14.70 24. 55 17.70 -14.20 -. 45 -1.00 .50 1.21 C620 0 25.28 160 38* - 14.63 25. 1 1 15.20* -13.98 -c 17 -1© 18 .65 1.35 C62 8 0 30.72X 24.90X -18.23X 30. 34X 23.97X -17.47X -. 38 -.92 .76 1. 26 C633 0 24 0 4 0* 17 o 86 -15.48 24. 06X 16.98 -14. 71 -© 34 -. 88 .77 1.22 C64 0 0 25.89 18.71 -15.39 2 5. 71 17. 86 - 14. 61 -o 19 -.85 .78 1. 17 C646 0 29. 12X 1 8.76 - 10. 19X 28. 54X 1 8.77* -10© 04X -. 58 .01 X .15 * .60*

C64 8 0 25 0 13 IS. 66* -15.21 24. 73 19. 04* -14. 53 1 0 o -.62 .69 1.00

C65 5 0 25.66 18.32 -14.39 25.26 17.60 -13.71 -.41 -•72 .68 1 o 07 C67 4 0 25.75 18. 45 -15.65 25. 05 17. 55 -15. 25 -.70 -•90 .40 1.21 C677 0 26.50* 16.34* -14.73 25.60 15.66 -14.54 -.91 * -.68 . 19 * 1. 14 C69 0 0 24.90 18.40 - 16. 40 25. 10 17. 10 -15. 45 .20 -1.30 .95 1.62

GRAND MEANS

25.41 o CVJ o

CD - 15.44 25. 22 17. 06 -14© 74 -o22 - o 97 .68 1. 25

SD OF MEANS

.44 .78 • 62 .34 .83 .58 . 28 o 24 .21 .25 INCLUDED LABS FOR THIS MEAN

55 55 53

1978-1979

INST CODE LAB

70HM C 1 2

l

70HM Cl 22 70HA C 1 4 8 70HA C 1 50 70 HA C 1 52 70HA C 1 66

70 HA Cl 83 70HM C 2 1

3

70HA C223

70 HA C230

70HA C241 70HA C255

70HM C256

70HA C 259 70HR C262

70 HA C285

7 OHA C288

70 HA C29

1

70 SC C3 1

7

70HA C32

0

70 HR C32

5

70 HA C340

70HA C35

2

7 OHM C356

70HA C380

7 0 HA C382

70HA C402

70HA C427

7OHA C 44

0

70HM C442

70HA C454

70HA C 456

7 OHM C45

8

70HA C475

70HA C477

70HA C 49

4

70GP C496B

70RA C499A

7 OHA C499B

70HA C506

70 SC C5 1

7

70GX C53

8

70GP C54

1

70GD C 54 2 70 HA C543

70HQ C57

4

70 HM C576

70 HA C585

70GD C600

70HQ C619

7 OHA C62

0

70ME C62

8

70HA C633

70 ME C640

7 OCG C646

70 SC C64 8 70 HU C65 5 70 HA C674

70 SC C677

70 HM C690

9

EXPLANATION OF DATA FOR WHITE SAMPLE

Specimens of a white sample were distributed to the participants along

with the usual two pairs of colored specimens, and each participant was asked to return measurement data for the white specimen, reporting re- sults in the same manner as for the colored specimens.

As a first step, three laboratories were selected to serve as "reference"

laboratories for the purposes of this analysis and the average of their

X, Y, Z values for the white sample were computed. Next, the ratios of

the participants data to the combined reference laboratory values were

calculated for each participant (transformed to X, Y, Z space if necessary).

These ratios are shown in the White Sample Analysis tables.

Two observations can be made about the data in the White Sample Analysis

tables. First, the participants as a whole tend to be high compared with the

combined average values obtained by the selected reference laboratories.

Second, a few participants had noticeably extreme values for one or more

of the components and these participants especially should look to the cause.

Next, the ratios in the White Sample Analysis tables were used to "adjust"

the data of the normal data tables to obtain the adjusted data table values.

The adjustment consisted of dividing the X, Y, Z values of the normal data

tables by the respective ratios in the White Sample Analysis tables.

The significant change in the adjusted data tables is in the SD OF MEANS.

Comparison of these among-1 aboratory standard deviations with those in

the normal data tables, shows considerable reduction for X, Y, Z. Thus

part, at least, of the disagreement among participants is due to errors in

standardization that could be corrected through use of an agreed-upon white

standard. There is no similar significant change for AX, aY, and aZ.

11
REP0FT N0. 26 MCCA C0LLAB0RATI VE REFERENCE PROGRAM 1978- 1979

WHITE SAMPLE ANALYSIS

X, Y, Z LABORATORIES LAB RATIO— -( LAB/COM B I NBD ) INST PERCENT FROM COMBINED

CODE X Y Z C0DE X Y Z

Cl 57 lo 00 86 ©9960 1.0064 70GE © 86 -©40 .64

C 1 62 loO 1 18 1 0 0 1 03 1.0104 70 DC 1 © 18 1 © 03 1. 04 C244 o 9942 ©9938 .9956 70ZE -0 58 -©62 -©44 C250 © 9996 © 9982 .9992 70 ZF -0 04 -© 18 -. 08 C251 1 o 0040 lo 0021 1.0015 70ZE 0 40 .21 © 15 C2 53 1 o 0 1 63 1 0 0 1 48 1.01 18 70GC 1 0 63 1 © 4 8 1 . 18 C278 1 o 026

1

lo 0296 lo 0229 70NE 2 © 61 2© 96 2© 29 C372 1 o 0053 ©9998 1.0041 70ZE © 53 -©02 0 41 C4 07 1 o 0 1 06 l© 0096 1. 0133 70BL 1 © 06 .96 1.33 C4 12 1. 01 13 1 e 0 1 2 0 1.01 12 70GE 1© 13 1 0 2 0 1 © 12

C4 14 o 9625 ©9844 .9769 70MD - 1© 75 -

1

0 56 -2. 31 C4 16 A 1 e 0 1 85 l© 0194 1. 0156 70GE 1© 85 1 0 94 1© 56 C416B lo 0531 1© 0539 1© 0209 70 I

B

5© 31 5© 39 2© 09 C4 17A 1 o 0097 lo 0104 1.0134 70GE .97 1.04 1. 34 C4 1 8 o 9 8 25 0 9799 .9948 70CE -1© 75 - 2 © 0 1 52 C422 o 99 09 ©9897 .9836 70GC -.91 - 1 o 0 3 -1.64 C424 le 0064 1© 0067 1.0069 70CA ©64 0 67 .69 C42 8 1 o 0067 l o 0049 1. 0078 70HB ©67 .49 e 78

C4 37 1. 0135 lo 0124 1.0302 70CE 1 0 35 1 0 24 3. 02 C443 lo 01 13 1 © 0001 I 0 OO 66 70CN 1© 13 ©01 ©66 C444 lo 0096 1© 0105 lo 0121 70GE ©96 1© 05 1.21 C445 1 o 0 1 52 1© 01 47 1. 0194 70LS 1© 52 1 © 47 1© 94 C446A o 99 83 © 9982 ©99 85 70GE -0 17 -© 18 -« 15 C451 lo 0054 1© 0069 ©9971 70AC © 54 ©69 -0 29 C453 1 o 0 069 1 © 0080 1.0000 70 HT ©69 © 80 . 00

C4 55 1 o 0085 1 © 01 1 1 1. 0103 70 KS © 85 1 © 1 1 1© 03 C459 o 9958 ©9967 .9909 70GE -©42 -©33 -.91 C460 1 .0052 1© 0065 1© 0029 70GE © 52 ©65 0 29 C462B 1 o 00 1

3

1© 0015 1. 0053 70GE © 13 © 1 5 © 53 C463 1 o 0024 1 © 00 17 l. 0009 70ZD .24 © 17 • 09 C469 o 9553 ©9566 .9091 70GE -4© 47 -4© 34 -9. 09 C470 1.0147 1.0156 1.0194 70DH 1© 47 1.56 1.94 C472 o 9999 ©9998 0 9973 70KT -© 01 -© 02 -.27 C473 1 o 0 1 22 1.0129 1.0141 70GE 1 © 22 1© 29 1© 41 C474 l o 0002 1 © 00 1 1 1©0005 70GE © 02 0 1 1 .05 C476 lo 0102 1© 0099 1.0081 70SA 1 © 02 © 99 © 81 C479A 0 99 1

1

©99 10 .9873 70GB -© 89 -.90 -1© 27 C479B 1 o 0 1 84 lo 0185 1.0242 70SA 1© 84 1© 85 2© 42 C480 1 ©0057 lo 0037 1.0085 70HB © 57 .37 © 85 C4 81 lo 0390 lo 0169 1.2120 70CF 3© 90 1 o 6 9 21. 20 C483 0 9921 0 99 27 ©9925 70ZF -© 79 -.73 -• 75 C495 1 0 0089 lo0103 1. 0042 70KS © 89 1. 03 © 42 C496A 1 e 0 1 63 1© 0176 1.0139 70GE 1© 63 1 0 7 6 1.39 C499C 1 e 0296 l o 0310 • 1031 70BL 2©98 3© 10 -89© 69 C503 lo 0158 lo 0162 1.0205 70GE 1© 58 1.62 2. 05 C508 1 ©0175 1.0173 1. 0172 70GE 1.75 1 0 73 1.72

C511 e 9995 1.0002 .9965 70DH -© 05 © 02 -. 35 C521A 1.0104 U0123 1.0145 70CA 1 0 04 1. 23 1. 45 C521 B 1.0253 1.0242 1. 0241 70SA 2© 53 2.4 2 2© 41 C522 ©9965 ©9979 ©9889 70SA - 0 35 -0 21 - 1.11 C524 1 0 0 1 46 1© 0154 1.0121 70GE 1 0 46 1 0 54 lo 21 C528 ©9870 . 9883 .9796 70MD -1© 30 -1©17 -2. 04 C532 I 0 OIO6 1.0115 1.0160 70GE 1 © 06 1. 15 1.60 C534 ©9875 ©9889 .9775 70MD -1© 25 -loll - 2 © 25 C54 0 l ©0072 l© 0076 1.0044 70GE ©72 ©76 0 44 C545 © 9658 ©9671 .9670 7 OGC -3© 42 -3. 29 -3© 30 C547 1© 0 165 ©9926 1.0039 70HP 1 ©65 — 0 7 4 • 39 C548 ©9745 ©9756 .9693 70 SB -2© 55 -2© 44 -3© 07 C552 ©9961 ©9949 .9994 70 HN -0 39 -© 5 1 -. 06

C6 12 1 © 0 1 38 loOlSS 1.0078 70GE 1© 38 lo 55 .78

C6 13 lo 0201 1© 0224 1. 02 15 70MD 2.0 1 20 24 2© 15 C619 1 ©0092 1© 0087 1.0067 70 9A ©92 © 87 .67 C627 ©9909 ©9914 .9870 70SA -0 91 -0 86 - 1 © 30 C629 ©9965 ©9955 .9974 70HN -©35 -. 45 -. 26 C630 • 9993 . 9988 1.0018 70 KS -.07 -. 12 • 18 C631 A 1 © 0 1 09 1. 01 13 1.0029 70 AC 1©09 1© 13 © 29 C631B l o 0093 1© 0146 .9904 70AC ©93 1 0 46 -.96 C632 lo0059 lo 0060 .9986 70AC © 59 ©60 -. 14 C634 ©9828 ©9799 .9758 7 OCE - 1 0 72 - 2 © 01 -2.42 C638 ©9967 © 9944 .9925 70GY -©33 -.56 -© 75 C639 ©9938 ©9934 . 9937 70DH -© 62 -066 -.63

C644 ©9922 © 9940 .9823 70 MD -©78 -©60 -1.77 C645 ©9559 © 9522 .9107 70 AC -4© 41 -4©78 - 8 . 93 C656 ©9904 ©9910 .9828 70 SA -©96 -.90 -1.72 C657 .9746 1.0066 .9186 70 AC -2© 54 .66 - 8 © 14 C661 ©9748 1.0043 .9304 70GE -2.52 0 43 - 6 © 96 C662 © 9659 .9907 .9160 70 DH -3© 4 1 -.93 - 8 . 40 C664 ©9615 ©9554 .9574 70 KC -3© 85 -4© 46 -4. 26 C671 A ©9882 .9890 .9817 70 DH -1©18 - 1 © 10 -1. 83 C671B © 9909 .9912 .9863 70 DH -0 91 -©8 8 -1© 37 C671C ©9920 .9918 .9855 70GC -© 80 -© 82 - 1. 45

C6 71D 1 c 0033 1.0021 1.0070 70 HB © 33 © 21 • 70 C672 C 9928 ©9938 .9877 70GC -.72 -©6 2 -1© 23 C675 1© 0059 1© 0063 .9992 7 0 AC © 59 ©63 -© 08

12
REPORT NO© 26 MCCA C6LLAB6RATI VE REFERENCE PROGRAM 1978-1979

LAB RATIO— -( LAB/C6MBINED

)

INST

WHITE SAMPLE ANALYSIS

L, a, b LABORATORIES PERCENT FROM COMBINED

CODE X Y Z CODE X Y Z

Cl 21 © 9 844 ©9807 .9917 70HM -1© 56 - l©93 -© 83

Cl 22 © 9873 ©9859 .9954 70 HM -1© 27 — 1 o 4 1 -©46

C 1 4 8 ©9883 ©9869 .9935 70 HA -1© 17 - 1 0 3 1 -.65

C 1 50 ©9784 ©9783 .9874 70HA -2© 16 -2© 17 -1© 26 Cl 52 1© 0 134 1© 0 1 19 1.0212 70HA 1 o 34 1© 19 2© 12

Cl 66 © 9 893 ©9880 .99 98 70 HA - 1 © 07 - 1© 20 -©02

Cl 83 ©9e76 ©9859 . 9939 70 HA -1© 24 — 1 o 4 1 -.61 C213 © 9740 ©9715 ©9808 70 HM -2© 60 -2© 85 -1© 92 C223 ©99 99 ©9973 1.0086 70HA -©Cl -e 27 . 86 C23C ©9883 ©9865 .9977 70 HA -1© 17 -1© 35 -©23

C241 ©9901 ©9890 .9978 70 HA -©99 -1© 10 -.22 C255 ©9340 © 9328 .8965 70HA -6© 60 -6© 7 2 - 1 0 o 35 C256 ©9 834 © 9817 .9907 70 HM -1© 66 -1© 83 -© 93 C259 ©9873 © 9859 . 9954 70 HA -1© 27 - 1©4 1 -© 46 C262 © 9981 ©9951 l©0093 70HR -o 19 -.49 © 93 C285 ©9867 ©9859 .9954 70 HA -1© 33 - l©41 -o 46 C288 © 9929 ©9921 1. 00 1 8 70HA -o71 ••© 79 • 18 C291 © 9926 ©9901 1©01 10 70 HA -©74 -.99 1© 10 C317 ©9822 ©9797 ©9891 70 SC -1© 78 -2.03 -1© 09 C3 20 ©9944 © 9925 .9985 70HA -© 56 -©75 -© 15 C325 ©9931 ©9922 1 o 0002 70HR -o 69 -©78 © 02 C340 ©9897 ©9874 .9995 70 HA - 1 o 03 - 1© 26 -©05 C352 ©9941 ©9921 1 © 0063 70 HA -© 59 -.79 © 63 C356 ©9804 ©9797 ©9914 70 HM -1© 96 -2© 03 -© 86 C38C ©9929 ©9921 1.0002 70HA -© 71 -©79 ©02 C382 ©9858 ©9838 .9911 70 HA -1© 42 - 1 © 62 -.89 C402 © 9867 ©985 1 . 9936 70H A - 1 o 33 - 1©49 -.64

C4 27 © 9904 ©9890 1.0031 70 HA -© 96 - 1© 10 • 31 C4 40 ©9972 © 9946 1.0022 70HA -© 28 -© 54 © 22 C442 ©9852 © 9838 .9979 70 HM -1© 48 - 1.62 -©21 C454 1 o 0 0 1

4

©9979 1.0033 70 HA c 14 •©21 © 33

C4 56 ©9926 © 9906 1© 0003 70 HA •o 74 -© 94 ©03 C458 o 9 865 ©9849 ©9965 70HM -1© 35 -1© 51 -. 35

C4 75 ©9931 © 9904 1.0033 70 HA -© 69 -©96 ©33

C47”7 ©9998 ©9970 1.00 19 70HA -©0 2 -©3C • 19

C4 94 1© 0042 1 o 0025 1.0185 70 HA o 42 © 25 1 © 85 C4 96B ©9873 ©9859 .9909 70GP - 1 o 27 — 1 © 4 1 -© 91 C499A ©9904 ©9890 .9986 70 HA -o 96 - 1© 10 -© 14 C499B ©98 84 .9859 ©9970 70HA - 1 o 16 -1.41 -© 30 C506 ©9941 ©9921 1.0002 70 HA -.59 -©79 © 02

C5 17 1 © 0 1 43 1©01 19 1.0158 70SC 1© 43 1© 19 1© 58

C5 3 8 ©9784 ©9756 . 9849 70GX -2© 16 -20 44 -i© 51 C541 1©00 18 1©C004 1© 0041 70GP © 18 ©04 ©41 C5 42 1© 0027 ©9991 1© 0032 70GD o 27 -©09 © 32 C5 43 ©9921 © 9907 ©9998 70 HA -c79 -© 93 -©02 C574 1© 02 10 l© 0172 1© 0196 70HQ 2© 10 1 o 72 1© 96 C576 © 8866 . 8802 © 891 1 7 OHM -1 1© 34 -1 1© 98 -10. 89 C585 ©9881 © 9866 1 © 0032 70 HA -1© 19 - 1© 34 .32

C-6 0 0 ©9840 ©98 18 .9852 70GD -1© 60 -1© 82 -1 © 48 C619 ©9956 © 9942 .99^8 70HQ -©44 -© 58 -© 22 C6 2 0 ©9 966 ©9934 1© 0004 70HA -o 34 -©66 © 04 C62 8 1 ©0233 1©0222 1© 0275 70 ME 2© 33 2© 2 2 2© 75 C633 1© 0448 1 © 0426 1© 0528 70HA 4© 48 4© 26 5© 28 C6 4 0 1 o 0042 1© 0053 1.0131 70ME o 42 ©53 l© 31 C646 ©9996 © 99e7 1 o 007

0

70CG -© 04 -© 13 ©70 C648 ©9946 © 9923 1 o 0062 70SC -© 54 -o 77 © 62 C655 ©9932 © 9930 .9904 70HU -© 68 -©70 -© 96 C674 ©9917 © 990 1 .99 97 70HA -©83 -©99 -. 03 C6 7*7

1 © 0 1 39 1© 01 14 1.0283 70 SC 1 o 39 1© 14 2. 83 C690 ©9753 ©9746 .9809 70HM -2© 47 -2© 5 4 -1© 91

13
REP0RT N<% 26 MCCA C0LL AB0RATI VE REFERENCE PROGRAM

X, Y, Z SPACE ANALYSIS, ADJUSTED DATA C0L0R COLOR DIFFERENCE

LAB SAMPLE C95 SAMPLE C96 DIFFERENCE C96 - C95 CODE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE

Cl 57 0 28.45 42. 64 35.61 27.73 4 1 o 63 35.70 - o 7

1

-1.01 * .09 * 3.00

Cl 62 0 28.75 41. 54 37.01 28.00 4 Oo 65* 37. 02 “ e 75 * -o 89 .02 » 3. 23 C244 fl 29.95 42.79 35.29 29.75 42 0 14 35. 80 "o 21 -.65 .51 2. 43

C2 5 0 0 28.61 41.67 37.23 26. 22 4 1 o 07 37.70 -•39 -.60 o 47 2. 58

C2 51 o 28 0 95 42. 26 36.21 28. 57 (0 o

<* 36.67 -.39 -.45 • 47 2.70 C253 0 29.16 42.41 34.61 28.83 41.95 35. 13 -. 33 -.46 .52 2. 49

C27 8 0 30.84X 42. 10 40.38X 30. 26* 41.42 40. 62X -. 58 -.68 • 24 2. 91 C37 2 X 29.73 42.91 36.45 28.95 42.21 36.76 -.78 « — o 7

1

• 31 4.36X

C4 0 7 0 29.87 42. 34 37.00 29.22 41.55 37. 24 -.65 -.79 • 24 3. 12 C41 2 0 29.28 42. 49 36. 15 28© 63 41.68 36.37 -. 66 -.82 • 22 3. 13

C41 4 0 29.59 42. 68 36.70 28.96 41.90 36. 94 -.63 -.77 • 24 3. 07

C4 1 6 A o 28.88 42. 05 35.75 28.34 41.38 36. 08 -. 54 -.67 .33 2. 96

C41 6B X 29.27 41.97 34.99 29.05 41.72 34.71 -.22 -.25 -o 27 X . 52X

C4 1 7 A o 28.78 41. 88 35.94 28. 24 41.22 36.31 -. 54 -.66 .37 3. 05 C41 8 0 28.72 41.98 35.75 28© 32 41.51 36. 26 -.40 -.47 e 51 2. 83 C422 0 28.86 41.72 34.70 28.40 41.14 35. 14 -.45 -. 58 • 44 2. 81 C42 4 0 29. 1 5 42. 25 36.51 28.79 41.80 37. 03 -. 36 - o 45 o 53 2.65

C4 2 8 0 28.55 41.82 34.31 28. 17 4 1.33 34. 84 -.39 -.49 . 53 2. 80

C4 3 7 0 29.49 42.31 38. 03 29. 13 41.84 38. 52 -.36 - e 47 .49 2. 52 C443 O 29. 16 42. 25 35. 80 28. 84 41.77 36. 48 -.32 0 1 .67 2.77

C44 4 0 28.77 41.84 36.45 28.37 41.32 36. 88 -.40 -.51 . 43 2.61

C44 5 0 28.94 41.91 36.20 28. 68 4 1. 59 36. 89 -.26 -.32 . 68 2. 65 C446A 0 29.18 42. 42 36.40 28.75 41.89 36. 88 -.43 -.53 o 49 2. 83

C45 1 0 29.00 41. 86 36.34 28.63 4 1.43 36. 86 -.37 -.44 . 52 2. 72 C453 0 30.19* 43. 18* 35.92 29. 81 * 42.73X 36. 42 -. 38 -.45 .50 2.65 C455 0 29. 14 42.23 36.75 28. 73 41.72 37. 21 — o 4 1 -.51 . 46 2.71 C459 0 28.91 41.97 36© 1 l 28. 46 41. 41 36. 55 -.45 -. 57 o 44 2. 80 C460 0 28.89 42. 05 35.73 28. 42 41.45 36. 1 1 -.48 -.60 .39 2. 81 C462B 0 29 0 01 42. 04 34.37 28.76 41.74 35. 01 -. 25 -. 30 .65 2. 58

C4t 3 0 28. ei 42.05 36. 19 28. 54 41.69 36. 84 -•27 -.36 .65 2.60

C46 9 0 30.68X 44. 76 X 39.98X 30. 26* 44. 22X 40.51

X

-. 42 -.53 .54 2. 80 C47 0 0 28.47 41.39 36.38 28. 18 41 . 00 36. 97 -O 29 -. 38 .59 2.55

C472 0 29.17 42.06 37 0 08 28.75 41.51 37.52 -•43 -. 55 .44 2. 68 C47 3 0 28.70 41. 74 36.47 28.35 41.31 36. 99 -.35 -.43 .52 2.64 C474 0 28.73 41. 78 35. 86 28. 40 41.37 36. 38 -.32 -.41 .52 2.53

C47 6 0 28.54 41.77 35.88 28. 02 4 1.10 36. 25 -•52 -.67 • 37 2.97 C479A X 28 o 60 41.87 36. 06 28. 00 41.27 3 5. 4 0 -.61 -.61 -.66 X 1.77X C479B 0 29.3 1 42.32 37.37 28.75 41.76 37. 43 -o 56 -.55 .06 » 2.73

C48 0 0 29. 12 42.32 34.70 28.65 41.76 35. 18 — o 47 -. 56 .48 30 03

C4 81 0 30.40* 42. 24 38.79* 30. 25* 41.75 39. 34* -. 16 -.49 . 55 2. 08* C483 0 29.22 42.61 36. 06 28.90 42. 11 36. 53 -.32 -. 50 . 48 2.27*

C49 5 0 29. 16 42. 1 1 37.28 28. 80 41.65 37. 83 -.36 -.46 . 54 2. 70 C496A 0 28.65 41.79 35. 81 28. 20 41.20 36. 23 -.45 -. 58 • 42 2.77

C4 99C X 30. 16* 43. 37 X 350. 07X 29.97* 42.84X 355. 55X -. 18 -o 53 5. 48 X 4. 23X C503 0 28.31 41.25 35.72 27. 81 40.62* 36. 06 -. 50 -.62 .35 2.83

C5 0 8 0 28.78 41. 97 35. 19 28. 54 41.67 35. 82 -•23 -.30 .63 2. 44

C51 1 0 29.04 42. 15 36.57 28. 59 41.59 37.02 -.45 -.56 . 44 2. 8 0 C52 1 A 0 28.98 42. 40 35.69 28.65 41.97 36. 25 -o 32 — o 4 2 . 57 2. 59 C52 IB 0 27.86* 40. 52 X 35. 05 28. 93 42. 13 37. 1 8 1. 07 X 1.6 1 X 2. 14 X 3. 45* C522 0 28.88 41. 89 35.39 28. 65 41.59 36. 20 -. 23 -.30 . 81 * 2. 84 C524 0 29.22 42. 28 36.48 28. 89 4 1.86 36o 98 -.33 -.42 . 50 2. 46 C52 8 0 29.12 42. 12 36. 89 28. 82 41.75 37. 44 -. 30 -.37 . 55 2. 52 C532 0 27.43* 39.97X 38. 00 27. 14* 39. 55 X 38.60* - . 29 -.43 . 60 2. 58 C534 0 29.23 42. 13 36.5 1 28. 78 41.58 36.92 -. 45 -. 55 © 4

1

2. 73

C54 0 0 29.44 42© 49 36.53 28.87 41.78 36. 83 -.57 -.70 .30 2.97

C54 5 0 28.48 41.65 35.25 28.30 41.40 36. 02 -o 18 -.25 .77 * 2. 56 C54 7 0 27.54* 41. 78 35. 10 27. 05* 41.15 35. 48 -.48 -.63 .37 2.83

C54 8 0 28.74 42.23 34*67 28. 10 4 1.41 34. 89 -.64 -.82 o 22 3. 03 C552 0 28.29 41.31 33.41* 28. 25 4 1.23 34. 35* -. 04 * -.08 * .94 X 2.55 C612 0 28.49 41. 55 35.88 28. 18 41.15 36. 44 -.32 -. 40 . 56 2. 59 C613 0 28.57 41.61 35.94 28. 15 4 1.29 36. 39 -o 42 -.51 • 45 2. 75

C6 1 9 0 27.75* 41.34 35.06 27. 35* 40.75* 35. 46 -.40 -.59 .40 2. 47 C627 0 29.95 42.63 37.01 29. 28 41.84 37. 16 -.67 -.79 • 16 3. 04 C629 0 28.71 42. 12 34.23 28. 01 41.25 34.40* -.70 -. 87 . 17 3. 18 C630 0 O' 0 O

cvj 42.48 36.71 28.68 4 1.61 36. 85 -•72 -. 87 o 14 3. 24*

1978-19^9

INST CODE LAB

70GE C 1 57

70 DC C 1 6 2 70ZE C244

70ZF C25

0

70ZE C251

70 GC C25

3

7 ONE C27

8

70ZE C37

2

70BL C407

70GE C412

70MD C414

70GE C416A

70IB C416B

7 OGE C417A

70CE C41

8

70GC C422

7 OCA C424

70HB C42 8 70CE C 437

7 OCN C443

70GE C 44 4 70LS C44

5

70GE C446A

70 AC C45

1

70HT C453

7 0 KS C 45 5 70GE C459

70GE C46

0

70GE C462B

70ZD C 463 70GE C469

70DH C47C

70KT C47

2

70GE C473

70GE C474

70SA C47

6

70GB C479A

70 SA C479B

70HB C480

70CF C481

70ZF C48

3

70 KS C495

70GE C496A

70BL C499C 70GE C50

3

70GE C50 8 70 DH C51 1 70CA C521A

70SA C521B

70SA C522

70GE C524

70MD C52 8 70GE C532

70MD C534

70GE C540

70GC C54

5

70HP C547

70 SB C54 8 70HN C552

70GE C612

70MD C613

70SA C619

70 SA C627

70HN C629

70 KS C630

14
REPORT N0„ 26 MCCA COLLABORATIVE REFERENCE PROGRAM

X, Y, Z SPACE ANALYSIS, ADJUSTED DATA COLOR COLOR DIFFERENCE

1978-1979

LAB SAMPLE C95 SAMPLE C96 DIFFERENCE C96 - C95 INST C6DE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE CODE LAB

C631A 6 29* 07 41* 83 36.71 28* 34 40*93 36*79 -*73 * -o 90 * *08 * 3* 15 7 0AC C631A

C631B * 29 0 16 41* 84 36.74 28* 59 41*15 36* 98 -* 57 - o 69 o 24 2* 86 70 AC C63 IB C632 0 290 2 0 42. 08 36*57 28*71 41* 47 36* 97 -*49 — * 60 ,40 2* 88 7 OAC C63 2 C634 0 28 0 49 41*63 35*18 28* 06 41 * 04 35* 56 -* 43 -.60 *38 2*54 70CE C634

C63 8 0 28 0 69 oo < 34.96 28* 39 41*43 35*57 -* 30 40 *60 2*62 70GY C63 8

C63 9 0 28 0 56 41* 44 37* 17 28* 20 40.98 37*68 -* 36 -*46 * 50 2* 61 70DH C639

C64 4 0 29*28 42* 26 36.60 28* 78 41*64 36*97 -* 50 -*61 *37 2*85 70MD C644

C645 0 30 0 89

X

44* 60

X

40.27X 30* 21* 43*78X 40* 52

X

-* 68 -* 82 * 25 3* 24 70 AC C645

C656 0 29 0 66 42*66 36.55 29. 19 42. 1 1 36* 98 -* 46 -* 54 *43 2* 87 70SA C656

C657 0 29*26 42.36 37.01 28*71 41*69 37*34 -* 55 -*67 *33 2*96 70 AC C657

C66 1 0 28*02 40* 87

38.72* 27* 60 40*30X 39* 19* -o 42 -*57 o 47 2*79 70GE C66 1 C662 0 29* 12 42* 49 36. 81 28* 67 41*91 37*25 -« 46 -* 58 *43 2* 80 70DH C662

C664 0 29.8 1 43* 06* 36*90 29* 24 42*32* 37* 22 -* 56 - o 74 *32 2* 87 70KC C664

C671A 0 28.87 41*92 36. 03 28* 44 41*39 36* 45 -* 43 -* 53 o 42 2*68 70DH C 6 7 1

A

C671B 0 28*47 41*36 36*78 28. 16 4 Oo 90 37*37 -*31 -* 46 * 59 2* 59 70DH C671B

C67 1C 0 28*9 1 41. 89 34.75 28* 52 41.36 35* 19 -e39 -* 53 *45 2* 56 70GC C671C

C671D 0 29*87 41*96 34.54 28*40 41*41 34* 92 - o 47 -* 54 *38 2* 86 70 HB C671D

C67 2 0 28*9 l 41.46 34*57 28*40 40* 75* 34*93 -* 50 -*70 *35 2*74 70GC C67 2 C675 0 29*0 5 41* 89 36. 26 28*59 41*31 36* 66 -*46 - * 58 *40 2*77 7 OAC C67 5

GRAND MEANS

28*93 42* 05 36*08 28* 59 4 1*50 36* 54 -.43 -* 56 * 43 2* 77

SD 0F MEANS

*53 © 42 1. 02 *61 *37 1 * 00 . 14 e 17 * 16 o 24 INCLUDED LABS F0R

76 THIS MEAN75 76 79 74 76 78 78 77 79

15
REPORT N' 26 MCCA C0LLAB0RATI VE REFERENCE PROGRAM 1978-1979

X, Y, Z SPACE ANALYSIS, ADJUSTED DATA C0L0R C0L0R DIFFERENCE

LAB SAMPLE C97 SAMPLE C98 DIFFERENCE C98 - C97 INST CODE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE CODE LAB

C 1 57 X 9.20 5. 65 X 13.99 8.51 5. 58X 13. 57 -.69 X -.07 -o 42 13.27X 70GE C 1 57

Cl 62 0 9.86* 7.23* 14. 26 9.66* 7. 17* 13. 94 -O 20 -. 06 -.32 2. 09 70 DC C 1 6 2 C2 44 0 8 0 87 6.39 14.41 8. 76 6.39 14. 1 1 -o l 1 . 00 -.30 lo 61 70ZE C244

C250 0 9.8 l* 7. 1 1 * 14.71 9.69* 7.01 1 o 42 -c 13 -.10 -.30 .88 70ZF C25 0 C25 1 0 9 0 12 6.39 14.03 8. 72 6. 19 13. 4 tr -.41 -.20 -. 59 2. 68 70ZE C25 1 C255 0 8.88 6.41 14.31 8. 45 6. 12 13.63 -. 42 — o 29 -.67 1. 62 70GC C253

C27 8 0 7.99X 6.31 12. 12X 7 0 94* 6.41 12. 02X -.05 . 10 -. 10 « 3. 36 70NE C 27 8 C37 2 0 8 o 49 6.63 14.35 8. 12* 6.37 13.69 -.36 -. 26 -.66 1.44 70 ZE C37 2 C4 0 7 0 9.22 6.79 14. 46 8.79 6. 52 13. 76 -.43 -o27 -.70 1.69 70BL C 407

C41 2 0 9.22 6.75 14. 52 8. 81 6. 48 13. 82 -. 41 -c27 -.70 1. 54 70GE C412

C414 0 9 0 0 4 6. 56 14. 24 8.65 6.32 13. 58 -.39 -. 23 -.6 7 1.60 70MD C41 4 C4 1 6A 0 8.41* 5. 94* 13.65 8. 25 5. 89* 13. 23 -o 16 -. 05 — .42 1. 22 70GE C416A

C416B 0 8 o 57 6. 24 14.35 8. 29 6. 10 13. 86 — o 27 -.14 -.49 1.60 70IB C416B

C41 7A 0 8.70 6. 25 13.78 8. 49 6.18 13.39 -.20 -. 06 -.40 1. 88 70GE C4 1 7A C41 8 0 9.69* 6.92 14. 47 9.41 6.79 Po o -.28 -O 12 -. 43 f\J o o o 70CE C41 8 C422 0 8.61 6. 18 13. 32 8. 47 6. 1 8 13. 44 -. 14 .01 -.38 2. 12 70GC C42 2 C42 4 0 9 o 30 6 0 73 14.61 9. 1 1 6.70 14. 22 -o 19 -. 03 -. 39 2.37 7 OCA C42 4 C42 8 0 9.C5 6.53 14.54 8. 86 6.50 1 4. 16 19 -. 03 -. 38 2. 51 70HB C42 8 C437 X 9.33 6.60 1 3 o 5 1 9. 04 6. 56 13. 22 -. 30 -.04 *c 29 4. 9 1 X 70CE C 437 C443 0 8.85 6. 46 14. 20 8.77 6. 55 13. 93 -. 07 .09 -. 26 3. 26 70CN C443

C444 0 9. 1 5 6.62 14.16 9. 01 6.66 13. 85 -. 14 . 03 -.32 3. 13 70GE C444

C445 0 9.50 7. 00 14.90 9.28 6.98 14. 48 -. 22 -.02 -.42 2.97 70LS C445

C446A 0 9.06 6. 57 14. 16 9. 02 6.71 13. 96 -.04 o 14 -. 20 3. 80 70GE C446A

C451 0 9.05 6. 64 14. 13 8.91 6.64 13.73 -. 14 . 00 -o 40 2. 07 7 0AC C 45 1 C453 0 8.98 6.67 14.96 8. 82 6.67 14 0 54 -. 16 . 00 -.42 2. 43 70HT C453

C455 0 9 o C 4 6. 58 13.96 8.99 6.71 13.77 -. 05 O 12 -o 19 3.63 7 OKS C455

C459 0 9.04 6. 56 14.20 9. 00 6.70 14. 02 -. 04 e 14 -o 19 3. 72 70GE C459

C46 0 0 8.84 6.47 14. 23 8. 77 6. 57 13. 95 -. 07 .09 -. 28 3. 05 7 0GE C 46 0 C4623 0 8.79 6.39 14.32 8.69 6.39 13. 93 -.10 . 00 -o 40 1. 30 7 0GE C462B

C463 0 8.93 6. 42 14. 08 8. 38 6. 52 13. 84 -. 05 . 10 -o 24 3. 02 7 0 ZD C463

C4 69 0 9.07 6.32 1

5

0 41* 8. 72 6. 15 14. 72* -.35 -. 18 -.69 1.71 70GE C46 9 C47 0 0 9.17 6.61 14. 03 9. 08 6.71 13. 84 -. 08 . 10 20 3. 76 70DH C470

C472 0 9.25 6.71 14.26 9. 22 6. 84 1 4. 07 -© 03 . 13 -o 19 3. 31 70 KT C472

C473 0 8.64 6. 25 13. 57 8. 60 6.39 13. 38 -. 04 o 14 -.20 3.99* 7 0GE C473

C474 0 8.88 6. 43 14. 19 8. 88 6.60 14. 03 . 00 o 17 -. 15 3. 68 70GE C47 4 C476 0 8.77 6.33 14. 20 8.46 6 o 09 13 0 63 -.30 -.23 -. 57 1. 45 70 SA C476 C479A X 8.C2X 6.31 12.97* 7. 82* 6.51 12. 51* -. 20 .20 * -. 46 8. 48X 70GB C479A

C479B 0 9.70* 7 0 24* 14. 39 9.35 7.06* 1 4. 35 -.34 -. 18 -. 04 * 4 0 20* 70 SA C479B

C4 8 0 0 9.07 6. 59 14.6 1 8.97 6.65 14. 28 -. 10 . 06 -. 32 2.72 70HB C480

C4 8 1 0 1 0.87X 7 . 48 X 15. 17* 1 0.65X 7 © 44 X 1 4. 85* - © 22 i o -. 32 2. 54 70CF C 48 1 C483 0 9.03 6. 65 14.40 8. 99 6.65 14.16 -. 04 . 00 -o 24 . 73 70ZF C 48 3 C49 5 0 9.03 6. 62 13.90 8. 69 6.42 1 3. 30 -.34 -. 19 -.60 1. 59 70 KS C49 5 C496A 0 8.e2 6.34 13.98 8.61 6.28 13.63 -o21 -o 06 -.36 2. 24 70GE C496A

C499C 0 9. 27 6. 89 1 57. 64X 9. 10 6. 86 154. 1 OX -O 17 03 -3. 54 X 1. 04 70 BL C499C

C503 0 9.05 6. 53 14. 08 8. 87 6. 52 13. 70 -. 18 -© 01 -. 38 2. 48 70GE C50 3 C508 0 9. 00 6. 45 14. 50 8.77 6. 37 l 4. 07 -O 23 -. 08 -.43 1.93 7 0GE C50 8 C51 1 0 9. 09 6. 59 14.22 8. 86 6.51 13.81 -o 24 07 -. 41 2. 28 70DH C51 1 C52 1

A

0 9.01 6. 52 14.29 8. 76 6.41 13. 86 -.25 -ell -• 43 1. 65 7 OCA C52 1 A C52 IB 0 8.94 6.46 14. 08 9. 15 6.72 14. 24 o 21 X O 26 * . 16 X 2. 47 70SA C52 IB C522 0 8 0 66 6.79 13. 85 8. 33 6.61 13. 30 -.33 -. 18 -. 56 2. 03 7 0 SA C52 2 C52 4 0 9 0 27 6. 84 14.69 9. 08 6.81 14. 22 -O 19 -. 03 -. 47 2. 19 7 0GE C524

C52 8 0 9.30 6.77 14.53 9. 15 6. 80 1 4. 17 -o 14 . 03 -C 36 2.69 70MD C52 8 C532 0 9.30 6.59 13.01* 9. 16 6.63 12.77* -. 14 . 04 -. 24 3. 51 70GE C53 2 C53 4 0 8.99 6. 16 14. 15 8. 84 6. 19 13. 80 -. 15 . 03 -.35 3. 1 4 70MD C534

C54 0 0 9.52 7. 07 14.77 9. 24 6.96 140 36 - o 27 -. 10 -. 41 2. 47 70GE C54 0 C54 5 0 8.76 6.32 14. 05 8.33 6. 04 13.38 -. 43 - o 27 -.67 1. 79 70GC C545

C54 7 0 8.67 6.43 13. 70 8. 47 6.39 13. 28 -. 20 -. 05 -.41 2. 31 70HP C54 7 C54 8 0 8.42 6c 00* 13.68 8. 36 6. 1C 13. 43 -. 07 o 10 -. 24 3. 50 70SB C54 8 C5 52 0 8.81 6. 36 14.42 8.78 6.49 14. 20 -. C3 O 14 -o 22 3. 43 70HN C55 2 C6 1 2 0 8. 76 6. 34 13.97 8.54 6.28 13. 54 -C 22 -« 06 -« 43 2. 13 70GE C6 12 C61 3 0 e.57 6. 40 13. 0 1* 8.28 6.25 1 2. 5 1 * -O 29 -. 15 -. 50 1. 87 7 0 MD C61 3 C61 9 0 8.62 6. 15 13.51 8. 42 6. 05 13. 1 1 -.20 -. 1 0 -. 40 1.02 7 0 SA C61 9 C62 7 0 9.37 6© 80 14.6 1 9. 13 6.72 14. 21 -O 24 -. 08 -.41 2. 1 8 70SA C627

C6 29 0 8.95 6.42 14.50 8.77 6.41 1 4. 1 1 -.18 -. 02 -.40 2. 42 70 HN C629

C630 0 9.C4 6. 57 14.31 8.72 6.40 1 3. 69 -. 32 -O 17 -.62 1. 46 70 KS C630

16
REPORT NO. 26 MCCA COLLABORATIVE REFERENCE PROGRAM

X, Y, Z SPACE ANALYSIS, ADJUSTED DATA COLOR COLOR DIFFERENCE

1978-1979

LAB SAMPLE C97 SAMPLE C98 DIFFERENCE C98 - C97 INST CODE F MEAN X MEAN Y MEAN Z MEAN X MEAN Y MEAN Z AX AY AZ AE C0DE LAB

C6 3 IA 0 9© C I 6*55 13.91 8.67 6.35 1 3© 28 -© 34 -.20 -©63 1© 44 70 AC C631A

C631B ft 9©C5 6*53 1 4© 22 6© 77 6.39 13© 67 -©28 15 -© 55 1 © 37 70AC C631B

C63 2 0 8© 9 5 6.51 14© 07 8© 75 6. 43 13© 57 -© 20 -.08 -©49 1© 35 70 AC C632

C634 0 9© 3 8 6© 94 14.57 9© 00 6.70 13© 90 -©38 -.24. -©67 1.43 70CE C634

C63 8 0 8©53 6© 13 1

0 70 8. 23 5©93* 13© 10 -© 30 -.20 -©60 1 o 22 70GY C638

C63 9 0 9© 25 6©67 13*97 8.94 6 0 513© 44 -©31 -. 16 -© 52 1© 58 70DH C639

C64 4 0 9©03 6© 57 14© 19 8© 79 6.48 13© 68 -© 24 -.10 -©51 1© 59 70MD C644

C64 5 0 9© 43 6© 89 1 5© 41* 9.23 6©84 14©91* -©20 -o 05 -© 51 1© 71 70AC C645

C656 0 9© 1 2 6© 65 14*6 1 8.73 6.35 13©91 -© 38 -.30 -© 69 1*79 70SA C656

C657 6 9© 06 6*63 14© 02 8© 68 6.41 13© 44 -©38 -.22 -. 58 1 o 92 7 OAC C657

C66 1 0 9©37 6©74 13© 20* 8©96 6.49 1 2© 60* -.41 -. 25 -©61 1© 61 70GE C66 1 C662 0 9*02 6© 59 14*22 8©7l 6©40 13© 60 -.31 -. 19 -©62 1© 24 70 DH C662

C664 0 8© 86 6© 46 13.90 8© 62 6.35 13© 35 -©24 -.11 -. 55 1 o 37 70KC C664

C67 1 A 0 9© 27 6© 76 14©52 9© 06 6 o 70 14© 06 -O 22 -o 06 — © 46 2© 16 70DH C67 1 A C671B 0 9©28 6© 77 14. 09 8© 92 6.56 13© 53 -© 37 -.21 -© 55 1© 83 70DH C671B

C671C 0 9© 03 6© 47 0

«* o 8© 72 6.30 13© 88 -©31 -. 17 -.53 lo 55 7 OGC C671C

C671D 0 8©90 6© 54 14.46 8© 49 6 ©23 1 3© 79 -© 41 -.31 -©68 1 o 67 70HB C671D

C67 2 0 e© 86 6*34 14* 12 8© 46 6.14 1 3© 57 -©40 -.20 -© 56 2© 88 7 OGC C67 2 C675 0 9 ©06 6© 56 14.05 8© 74 6 . 42 13© 56 -©32 -.14 -.49 2© 58 70AC C675

GRAND MEANS

9© 0 3 6© 56 1 4 o 22 00 0

(0 o 6.49 13.79 -o 22 -©07 -© 43 2©22

SD 0F MEANS

©30 ©25 ©44 • 33 © 27 © 45 o 12 © 13 © 16 ©82 INCLUDED LABS F0R TBIS MEAN 78 79 78 79 79 78 79 80 78 80

17
REPORT N0O 26 MCCA COLLABORATIVE REFERENCE PROGRAM

L, a, b SPACE ANALYSIS, ADJUSTED DATA COLOR COLOR DIFFERENCE

1978-1979

LAB SAMPLE C95 SAMPLE C96 DIFFERENCE C96 - C95 INST CODE F MEAN L MEAN A MEAN B MEAN L MEAN A MEAN B AL AA AB AE CODE LAB

Cl 2 1 X 64o 83 -36.54X 13. 18 64© 42 -35.63* 1 2o 28 -© 40 0 91 X -.90 1.34X 70 HM C 1 2 1 Cl 2 2 0 64.96 -33© 85 13.70 64. 66 -33 © 85 12© 70 -© 30 0 00 -1© 00 1© 04 70HM Cl 22

Cl 48 o 65o 3 8 -34. 74 1 4 0 50 64© 93 - 34© 73 13© 55 -© 45 0 00 -©95 1 0 05 70 HA C 1 48

C 1 5 0 0 65 e 65 -34.38 14.28 6 5© 10 -34.42 13© 34 -©56 -© 04 -©94 1© 09 70 HA C 1 50

Cl 52 o 64*67 -32 0 92 14© 00 64© 12 -32© 92 13© 01 -© 55 0 00 -.99 1© 13 70HA C 152

C 1 66 0 64 0 94 -33.96 13.76 64© 64 -33© 96 12© 86 -© 30 0 00 -©90 ©95 70HA C 1 66

C 1 8 3 * 65 o 3 1 35©05X 14. 15 65. 01 35© 20X 13© 25 -©30 0 15 * -©90 ©96 70 HA C 1 83 C213 0 65 ©34 -33. 89 14. 1 0 65© 03 -33 0 89 13© 19 -0 30 0 00 -0 9

1

©96 70HM C 2 1 3 C22 3 0 66© 04 -33© 86 13.78 65© 64 -33© 85 l 2o 84 -©40 0 00 -©94 1© 03 7 OKA C223 C230 o 6 5 e 46 -34.49 14©25 64© 92 -34©42 1 3 0 30 -© 53 • 07 -©95 1© 09 70HA C 23 0

C24 1 X 65© 1 1 -33© 77 13.26 64© 81 -33© 77 12© 76 -©30 0 00 -© 50 X © 59X 70 HA C24 1 C25 5 0 67©7 IX -35© 21 12. 89 67© 25X -35.15 1 1© 88 -c47 0 05 - 1© 01 1© 1 1 70HA C255

C25 6 0 65 o 04 -34© 50 14© 15 64© 65 -34.48 1 3© 21 "0 39 • 02 -©93 1 © 0 1 70 HM C256

C259 0 6 5© 3

1

-34© 10 14.45 64© 81 -34© 05 13 0 50 -© 50 e 05 -©95 1© 08 70 HA C259

C26 2 o 65© 75 -33.88 13.31 65.39 -33© 83 12© 37 -© 36 e 05 -.94 lo 01 70HR C262

C2 8 5 0 65 0 4 1 -34© 66 13.80 6 5© 21 -34.66 1 2© 9 1 -© 20 0 00 -©90 o92 70 HA C285

C2 8 8 0 6 5© 2 1 -34© 45 13 0 86 65© 06 -34©35 1 2© 92 -0 15 * 0 10 -.95 ©96 70 HA C28 8 C29 1 o 65© 2 8 -34. 13 14.63 64© 97 -3 4© 07 13©74 -© 30 0 05 -© 89 o94 70 HA C291

C3 1 7 0 65© 16 -34. 86 14.14 64 0 66 -34© 85 13©24 -.51 0 00 -©90 lo 04 70 SC C31 7 C32 0 o 65 © 99 -33.62 13.39 65.59 -33.62 12© 35 -©40 • 00 - 1© 04 » loll 70HA C32 0 C325 0 65©68 -34.56 13.35 65© 33 -34© 52 12© 42 -©35 0 04 -©93 1© 00 70HR C325

C34 0 0 65©94 -33© 27 12.61 65© 37 -33© 23 1 1©66 -© 56 « 05 -©96 lo 1 1 70 HA C340

C35 2 0 65©5 I -34.44 1 4 © 3 1 64©91 -34© 44 13© 36 -©60 0 00 -©95 lo 12 70 HA C352 C356 0 65©27 -34.31 13. e2 64. 76 — 34©31 12© 81 -© 51 © 00 -1© 00 1© 12 70HM C356

C38 0 0 65©31 -33© 80 14.21 64© 86 -33.69 13© 31 -©45 0 10 -©90 loO 1 70 HA C38 0 C38 2 0 65 0 38 -34© 74 13.74 64. 93 -34.69 12©74 -© 45 0 05 -1© 00 1© 10 7 0 HA C382

C402 o 65 ©5 1 -34© 04 14© 15 64© 97 -33©96 13© 16 -©54 0 08 -.99 1© 13 7 0 HA C40 2 C42 7 0 65©26 -33© 59 14. 03 64© 81 -33© 54 13.03 -© 45 © 05 - 1© 00 1© l 0 70 HA C427

C44 0 fl 65©32 -34.35 14.09 65© 06 — 34 0 30 13© 19 -©26 0 05 -© 90 0 94 70 HA C44 0 C44 2 0 64 © 83 -33.68 13. 16 64© 52 -33.68 1 2© 26 -©30 0 00 -.90 © 95 7 OHM C 44 2

C45 4 0 66© 1 2 -33© 22 13© 79 65. 72 -33.23 1 2© 86 -©40 - 0 02 -© 93 lo 01 70 HA C 454 C456 0 65 c 38 -34.21 14© 1 8 65© 00 -34©20 1 3 0 26 -© 38 © 0 1 -• 91 0 99 70 HA C456

C4 5 8 0 65©C 1 -34.43 13© 15 64© 68 -34© 40 12© 22 -© 33 0 03 -© 94 1© 00 7 0 HM C458

C475 0 65 0 7 5 -34.20 1 2 « 84 6 5© 3 8 -34© 14 1 1©92 -© 37 © 06 -o92 lo 00 70 HA C475

C477 0 66 o 07 -34.61 12.79 65© 58 -34.52 l 1© 83 -© 49 0 1 0 -©95 1.08 7 OHA C477

C49 4 0 65© 17 -34©59 12© 12 64© 87 -34© 54 1 1© 13 -© 30 c 05 -©99 lo 03 70 HA C 49 4 C496B 0 63© 85X -32.74 12.75 630 65* -3 2© 64* 1 1©75 -© 20 © 10 - 1© 00 1© 03 70GP C496B

C499A o 65© 1 1 -34© 50 14.23 64© 71 -3

4

0 50 13©28 -© 40 © 00 -©95 1© 03 ^OHA C499A

C499B 0 65.41 -34.20 14© 35 64© 81 -34© 19 1 3© 35 -© 60 0 00 -1© 00 lo 17 70HA C499B

C50 6 o 65© 16 -33© 79 14.41 64© 91 -33.79 13© 51 -© 25 0 00 -© 90 ©93 70HA C506

C5 17 o 64 © 6 2 -32. 29* 1 1.76* 64© 22 -32© 19* 1 0© 87* -© 40 0 10 -© 89 ©98 70 SC C 5 1 7 C5 38 o 66© 52* - 27© 39X 9© 17X 66. 01* -27. 28X 8© 06 X - 0 5 1 0 10 - 1© 1 1 X 1.22* 70GX C53 8 C54 1 o 64. 89 -34©25 13.46 64. 49 -34© 10 12© 52 -©40 0 15 * -©95 1© 04 70GP C54 1 C54 2 0 64© 14* -34© 1

8

13.20 63© 91* -33.95 12© 24 -©23 • 23 X -©96 1©02 70 GD C54 2 C54 3 0 65. C3 -34© 21 1 4 © C 5 64. 82 -34© 15 13© 14 -0 22 • 06 — 0 9 1 0 93 70 HA C543

C57 4 0 64© 85 -34.26 1 1 .98* 64. 50 -34. 16 1 1 e 09* -©35 e 10 -©89 ©96 70HQ C 57 4 C57 6 » 45© 1 4 X 34© 59

X

15.36* 44©9 IX 34© 5 8X 14©43* -© 23 “ 0 01 -© 93 ©96 70HM C 576

C58 5 0 6 5© 3 l -33© 74 14. 00 64© 84 -33©72 I 3© 07 -©47 • 02 -© 93 1© 04 7 OHA C585

C6C 0 e 65© 80 -34© 19 13.64 65© 30 -34. 19 1 2© 68 -© 50 © 00 -© 96 1©08 70GD C600

Cfc 1 9 0 64© 79 -35o 7 l * 12. 85 64© 39 -35.61 * 1 1© 95 -© 40 » 1 0 -.90 0 99 70HQ C61 9 C620 0 65©77 -33© 03 1 2© 57 65© 51 -33© 07 1 1©68 -© 26 - c 04 -.89 0 92 70 HA C620

C62 8 X 7 0© 89

X

-41© 04X 15© 0 1 70© 33X -41 © 19X 13© 82 -©56 -© 15 X - 1© 19 X 1 0 32X 70ME C62 8 C633 0 63©47X -34© 69 14.37 62© 99X -34.65 13© 44 -© 48 © 04 -.92 1 0 04 70 HA C633

C64 0 0 6 5© 65 -33© 62 12© 1 0 65© 33 -33© 56 1 l©20 -©32 0 06 -©90 ©96 70ME C64 0 C646 X 62© 57X -28 0 40 X 6.65X 62© 09X -28© 61

X

6© 07 X -© 48 -» 22 X -© 58 X © 78X 70CG C646

C64 8 0 66©6 2* -32© 79 14. 46 66© 18* -32©76 13© 55 -© 44 • 04 -©93 1 o 03 70 SC C64 8 C655 0 65© 0 7 -33© 5

1

1 1 .86* 64. 55 -33.43 10.91 * **© 52 • 08 -©95 1© 08 70HU C655

C674 0 65©38 -34. 15 13.88 64.97 -34© 15 12© 98 -© 40 © 00 -©90 © 98 7CHA C67 4 C677 o 64©94 -32.29* 12.85 64© 46 -32.30* 1 1© 92 -© 48 -© 02 -© 93 1© 05 70 SC C677

C69 0 o 6 5 © C 3 -33.79 14© 43 6 4 o 58 -33.89 13© 58 -© 46 " 0 10 X -© 86 * © 98 70HM C69 0

GRAND MEANS

65©36 -34© 03 1 3© 6 0 64.93 -33 0 99 1 2© 66 -© 40 © 04 -© 94 1© 03

SD OF MEANS

0 47 ©67 ©77 0 *OD ©67 0 77 0 1 1 0 04 . 04 0 07 INCLUDED LABS FOR THIS MEAN

51 53 53 52 53 53 54 52 53 54

18
HE PART N0© 26 MCCA COLLABORATIVE REFERENCE PROGRAM 1978-1979

L, a, b SPACE ANALYSIS, ADJUSTED DATA COLOR COLOR DIFFERENCE

LAB SAMPLE C97 SAMPLE C98 DIFFERENCE C98 - C97 INST CODE f MEAN L MEAN A MEAN B MEAN L MEAN A MEAN B AL AA AB AE CODE LAB

Cl 21 6 2 5 0 2 4 1

4

0 32 X - 28© 96X 25. 45 13©21

X

-27. 96

X

© 20 -1.1 1 1.00 1© 52 70HM C 1 2 1 Cl 22 0 25 0 58 18©34 - 15.39 25. 58 17© 24 -14© 59 © 00 -1© 1 1 . 80 1 . 36 70HM C 1 2 2 Cl 4 8 0 25c 87 18© 08 - 15.68 25. 57 17.18 -15. 03 -© 30 -.90 ©65 a© is 70HA C 1 4 8 C 1 5 0 0 26o 16 18.06 - 15.40 25. 85 17. 00 -14© 75 -©31 — 1 o 06 © 65 1© 28 70HA C 1 5 0 Cl 52 0 25 e 65 17.71 15.70 25. 15 16.91 -15© 01 -© 50 -•79 .69 1© 16 7 0 HA C 1 52

Cl 66 0 25© 6 5 17© 87 - 15. 10 25. 65 16.72 -1 4© 4 0 © 00 -1.16 © 70 1 o 35 7 OHA C 166

Cl 83 ft 25©53 I 8.o 68 - 15.84 25. 58 17.47 -15© 09 © 05 -1.21 ©75 1© 42 70 HA C 1 83

C21 3 0 25® 5 7 1 8© 1 0 - 15.71 25. 26 17© 09 - 1 5. 1 1 -©30 -1© 01 © 60 1.21 70HM C21 3 C2 23 o 25 0 63 1 6© 86 - 14. 85 25© 48 15. 82 -14© 16 -© 15 -1 . 05 ©69 l© 26 70 HA C223

C230 o 25® 92 18.45 15.33 25.24 17© 62 -14.96 -©68 -.83 ©37 1© 14 70 HA C230

C24 1 X 25 0 84 23.61

X

- 15© 19 25. 39 16.73 -14© 49 -. 45 -6.88 X © 69 6©93X 70HA C 24 1 C25 5 0 26©6 1* 19©28 - 17© 67X 26© 09* 1 8© 50 - 17© 12X -© 52 -•77 ©55 1.08 70 HA C255

C256 0 25 0 60 1 8 0 30 - 15.75 24© 97 17.66 -15© 36 -©63 -©64 .39 ©98 70HM C256

C259 0 25o 78 18© 44 - 1 5© 79 25© 38 17.69 -15. 29 -O 40 -©75 © 50 o 99 7 OHA C259

C262 o 25©36 1 7 8 21 * 1

4

0 9 8 25. 10 16©29 -14© 42 -© 26 -©92 © 56 loll 70HR C262

C2 8 5 6 25o 63 1 8© 23 - 14.79 25. 28 17.43 -14© 19 -©35 l o CD O ©60 l© 06 70 HA C285

C28 8 0 25© 55 18.47 - 15. 54 25© 50 17.42 — 1 4© 7

4

-© 05 - 1© 05 © 80 1.32 7 OHA C 28 8 C29 1 o 25.33 17.93 - 15.77 25© 53 16.73 -14© 79 © 20 -1© 20 ©99 1 o 57 7 OHA C 29 1 C31 7 0 25© 36 19.13 - 15.64 25. 46 17.92 -14© 74 © 10 - 1 o 2

1

©90 1.51 70 SC C31 7 C320 o 25o 30 17.23 14.60 25. 14 15.95 -1 3© 86 -. 16 -1© 28 © 74 1© 49 70 HA C320

C325 0 25. 10 1 8© 75 . 15.46 25. 10 17.35 -14© 59 © 00 - 1 o 39 o 87 lo 64 70HR C325

C34 0 o 25 0 6 3 1 6 0 67 - 13.57* 25. 17 15.90 -13© 16* -©45 -©78 ©41 ©99 70 HA C34 0 C352 0 25©70 1 8. 45 - 15.58 25. 40 17.75 -14© 89 -© 30 -©70 • 69 1© 03 7 0 HA C 352 C356 0 25 o 56 18.64 - 15.56 25. 16 18© 14 -1 4© 97 -©40 -© 50 © 60 © 88 70 HM C 356

C3 8 0 0 25.60 1 8©42 - 15.79 25. 20 17.62 -15© 09 -© 40 -© 80 ©69 1© 13 7 OHA C380

C382 0 25© 8 1 19© 13 _ 15.28 25.31 18.43 -14© 58 -©50 -.70 ©70 1© l 1 7 OHA C382

C402 0 25 o 84 17.71 - 15.63 25.36 16© 88 -15. 01 -.48 -© 83 ©62 1© 15 7 OHA C402

C427 0 25© 1 4 1 8.42 - 15. 86 25. 19 17.31 - 1 4© 97 . 05 -1© 10 ©89 1© 42 70 HA C427

C44 0 0 25© 85 18.47 - 15.31 25© 88 17.10 -14.44 . 03 -1.37 ©87 1 o 62 70 HA C440

C4 4 2 o 25.6 1 17.46 14.66 25.71 16. 15 -13© 76 © 10 - 1 © 3 1 ©90 1© 59 70HM C442

C45 4 0 25© 14 16.88 • 15.66 25. 33 15.43 - 1

4

0 63 © 19 -1. 45 1© 03 1© 78* 7 OHA €454

C45 6 o 25©60 18.11 - 15.60 25. 72 16.72 -14© 60 • 12 -1.39 1. 00 1 o 7 1 7 OHA C456

C45 8 o 25©58 1 8.30 - 14.59 25.81 16.96 -13© 64 © 22 -1.34 ©95 1. 66 70HM C 45 8 C475 0 25©54 17. 17 - 14.40 25. 18 16.21 -13© 84 -.36 - © 96 © 56 1.17 7 OHA C475

C477 0 25 0 46 1 7© 72 * 13© 91* 25. 28 16.76 -13© 29* -© 18 -©96 ©61 1© 15 70HA C477

C494 0 26© 57* 1 5o 67 * _ 12.54X 25©97 15.28 -12. 40X -©60 -©40 * O 1 4 * © 73* 7 OHA C494

C496B 0 24©6 7* 16.54 - 14.54 24© 78 15.63 - 1

3

0 74 © 10 -.91 © 80 1.21 70GP C496B

C499A 0 2 5© 6 4 1 8© 16 - 15.86 25.64 1 7 o 0 1 -l 5© 06 © 00 -1.15 © 80 1© 40 70HA C499A

C499B 0 25©78 17© 87 - 15.54 25© 48 17. 06 -14.94 -©30 -. 80 ©60 1© 04 7 OHA C499B

C506 0 25©50 i 8 0 20 15.99 25© 80 16.94 -14© 99 . 30 -1.25 1© 00 1 © 63 70HA C506

C517 0 24©9 5 17© 85 - 14.99 24.95 1 6 © 76 — 1

4

0 29 © 00 -1© 09 © 69 l© 29 70SC C517

C538 o 26© 22 19© 25 - 14. 17 25.77 18.45 -13© 77 -©46 -©81 . 40 1. 01 70GX C53 8 C54 1 0 24.39* 18. 41 - 15.58 24© 49* 17.16 - 1 4© 7

8

© 10 -1.25 © 80 1© 48 70GP C54 1 C54 2 0 24© 30 * 19© 01 - 15.64 24© 27X 18.04 - 14© 92 -© 03 -.97 © 73 1© 21 70GD C54 2 C543 o 25.79 17.79 - 15. 96 25© 82 16.60 -14© 99 . 03 -1.19 © 98 1© 54 7 OHA C543

C574 0 25© 1 8 17. 22 - 14.60 25. 09 16.18 -1 3. 91 -© 10 -1© 04 ,69 1© 25 70HQ C 574 C576 ft 8©59X 23.55X 1 5. 2 1 X 8© 52X 2 2© 36X 1 4©40X -© 06 -1© 18 -oSl X 1. 44 7 0 HM C576

C585 0 25©7 5 17. 56 - 15.61 25© 13 16. 88 -15© 19 -©61 -©69 o 4 1 1© 01 70 HA C585

C6C 0 6 26. 1 4 17.12 - 14© 42 25© 84 16© 21 -13© 82 -© 30 -.91 .60 1© 13 70GD C60 0 C61 9 0 25.07 1 e©67 - 14.63 24© 62* 17.67 -14© 13 -© 45 -l© 00 c 50 1© 21 70 HQ C61 9 C62 0 0 25.36 16. 23* - 14.45 25. 19 1 5. 06* -13© 80 -o 17 -1© 17 .65 1© 35 7 OHA C62 0 C6 2 8 0 30.38X 24.55X - 17©83X 30 o 01 X 23.64X -17© 08X -. 38 -•91 ,75 1© 24 70 ME C62 8 C633 0 23. 89 X 17© 37 -14.85 23. 56X 16© 51 - 14© 1

1

-© 33 -© 86 ,74 1© 18 70 HA C633

C64 0 0 25. 83 18.74 - 15.09 25. 64 17© 89 -14© 32 -o 19 -© 85 o 77 1© 16 70 ME C64 0 C64 6 0 29© 1 4X 1 8. 72 -9.95X 28© 56X 18.72 -9© 80X -© 58 . 01 X o 14 * ©6 0* 70CG C646

C64 8 0 25© 23 19. 59 - 14.82 24© 83 1

8

0 97

-14© 15 -.40 -.61 ,67 1©G0 70 SC C64 8 C65 5 0 25.76 18©37 - 14.53 25.35 17.65 -1 3©85 -©41 -•72 .68 1.07 70HU C65 5 C67 4 0 25©88 18© 44 - 15. 40 25. 18 17© 53 -15© 01 -© 70 -.90 .39 1© 21 70 HA C67 4 C67 7 0 26.35 16. 09* -14.11 25. 46 15© 42 - 13© 93 -o 90 * -.67 o 13 * 1© 13 70 SC C677

C69 0 0 25.22 1 8© 59 - 16.39 25.43 17. 28 -15© 43 o 20 - 1 © 32 ,96 1 o 64 70 HM C69 0

GRAND MEANS

25. 57 17©99 - 15© 19 25© 38 17© 03 -14© 50 -o 22 -©98 © 68 1© 25 SD 0F MEANS

© 44 © 83 ©61 ©34 © 89 © 56 © 28 © 24 . 21 © 25 INCLUDED LABS FOR THIS MEAN

54 55 52 53 55 52 57 56 57 57

19
NOTES ON NBS REFLECTANCE VALUES

The tables on page 21 of this report contain absolute reflectance

values measured at 40 wavelengths (38C-770 nm) and tristimulus

values for three of the five samples covered by this report.

The measurements were performed by the Radiometric Physics Division

of the National Bureau of Standards.

These values represent state-of-the-art color measurements on a single specimen of each sample. Thus the results give an accurate

picture of the values for single specimens and are not an accurate

measure of the whole sample population. Participants should be aware of this concept when comparing their measurements to these

NBS values.

20
NBS VALUES FOR SPECTRAL REFLECTANCE

45/0 REFLECTANCE FACTOR

SAMPLES C95 , C97, W15

WAVELENGTH (nm) C95 C97 W15

380 .0960 .0771 .1275

390 .1389 .1122 .2175 400 .1860 .1515 .4231 410 .2071 .1675 .6920

420 .2157 .1670 .8494

430 .2252 .1573 .8927

440 .2400 .1425 .9014 450 .2622 .1260 .9052 460 .2962 .1094 .9097

470 .3474 .0941 .9111 480 .4131 .0818 .9142 490 .4902 .0715 .9161 500 .5680 .0636 .9178 510 .6233 .0587 .9188

520 .6267 .0555 .9197

530 .5972 .0523 .9209

540 .5495 .0505 .9216

550 .4913 .0509 .9217

560 .4325 .0526 .9216

570 .3766 .0526 .9224

580 .3257 .0515 .9231 590 .2765 .0524 .9233

600 .2353 .0595 .9233

610 .2099 .0782 .9227 620 .1972 .1095 .9225

630 .1905 .1471 .9226

640 .1855 .1792 .9224

650 .1822 .2020 .9227

660 .1836 .2172 .9212

670 .1921 .2273 .9180

680 .2039 .2339 .9188

690 .2158 .2382 .9209

700 .2245 .2414 .9205

710 .2259 .2450 .9207

720 .2184 .2487 .9199

730 .2144 .2522 .9200

740 .2233 .2548 .9199

750 .2430 .2570 .9198

760 .2620 .2596 .9204

770 .2696 .2606 .9209

NBS TRISTIMULUS VALUES

45/0 REFLECTANCE FACTOR

SAMPLES C95 , C97, W15

X, Y, Z SPACE

C95 C97 W15

X 28.93 9.08 89.92

Y 42.22 6.57 92.12

Z 36.06 14.08 106.14

L, a, b SPACE

C95 C97 W15

L 64.98 25.62 95.98

a -34.23 18.42 - 0.73

b 12.59 -14.63 1.64

21

UNCORRECTED

REFLECTANCE

(PERCENT)

SPECTROPHOTOMETRIC CURVES OF COLOR AND

COLOR DIFFERENCE NO. 26 SAMPLES

W1 5

400 5'i- . ( M) 520 560 600 640 680

WAVELENGTH (NANOMETERS) 23 !
NBS-114A (REV. 9-76)

U.S. DEPT. OF COMM. BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. MCCA CRP Color 26

2.Gov*t Accession No, 3. Reciptenr $ Accession No.

4. TITLE AND SUBTITLE 5. Publication Date Manufacturers Council on Color and Appearance

Collaborative Reference Program, Color and Appearance

Report No. 26, Color and Color Difference

7. AUTHOR(S)

June 29, 1979

8. Performing Organ. Report No. J. Horlick, T. L. Cummings

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, DC 20234

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

Collaborative Testing Services, Inc., 9241 Wood Glade Drive

Great Falls, VA 22066; and Manufacturers Council on Color

and Appearance.

NBSIR 79- 1379

11. Contract/Grant No.

13. Type of Report & Period Covered

Final

14. Sponsoring Agency bode

'

15. SUPPLEMENTARY NOTES

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

16. ABSTRACT (A 200-word or less factual summary of most si gnificant information. If document includes a signi ficant 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 1 aboratories . 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; a lphabeti cal order; capi tali ze only the first letter of the first key word unless a proper name;

separated by semicolons)

Collaborative reference program; Color; Laboratory evaluation; Precision;

Reference samples: Testing calibration

18. AVAILABILITY (_ Unlimited 19. SECURITY CLASS

(THIS REPORT)

21. NO. OF

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22. Price

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