AATCC Evaluation Procedure 1 (2007)

Gray Scale for Color Change

Developed in 1954 by AATCC; Transferred to Committee RA36

1.  Scope

1.1  This evaluation procedure describes the use of a Gray Scale for visually evaluating changes in color of textiles resulting from colorfastness tests.  For instrumental assessment of change of color of a test specimen refer to AATCC Evaluation Procedure 7. A precise colorimetric specification of the differences between the reference and the 9-Step scale is given as a permanent record against which newly prepared Gray Scales, and old scales that might have changed, can be compared.


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The above information is only a summary of the AATCC Test Method.

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