HunterLab EasyMatch QC, Руководство пользователя

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EasyMatch QC User’s Manual Version 2.1
Measurement Values A-23
The D6166 index conforms to ASTM Method D6166 and uses a look-up table to determine Gardner
Color based on the sample’s Yxy (C/2°) values.
Gardner Color Y x y
1 80 0.3177 0.3303
2 79 0.3233 0.3352
3 76 0.3329 0.3452
4 75 0.3437 0.3644
5 74 0.3558 0.3840
6 71 0.3767 0.4061
7 67 0.4044 0.4352
8 64 0.4207 0.4498
9 61 0.4343 0.4640
10 57 0.4503 0.4760
11 45 0.4842 0.4818
12 36 0.5077 0.4638
13 30 0.5392 0.4458
14 22 0.5646 0.4270
15 16 0.5857 0.4089
16 11 0.6047 0.3921
17 6 0.6290 0.3701
18 4 0.6477 0.3521
Gardner D6166 is calculated as follows:
F I TM
G G G
+ =
where
G
TM
= the Gardner color of the test material
G
I
= the integer portion of the test material’s Gardner color value
G
F
= the fractional portion of the Gardner color value.
By comparing the x chromaticity coordinate of the test material with the x chromaticity coordinates for
the D1544 visual Gardner Color standards, the integer portion of the Gardner color can be determined
using this equation:
1 n TM n n I
x x x where , G G
+
< ≤ =
where
G
n
= the Gardner color value which is lighter than the test material
x
n
= the x chromaticity coordinate of the Gardner color standard which is lighter than the
test material
x
TM
= the x chromaticity coordinate of the test material