The Gray Scale for Color Change is an AATCC Evaluation Procedure that uses a gray scale to visually assess color changes in textiles during color fastness tests. Degrees of color change are rated from 5 (no change) to 1 (severe change).


The Gray Scale for Color Change is an AATCC Evaluation Procedure that uses a gray scale to visually assess color changes in textiles during color fastness tests. Degrees of color change are rated from 5 (no change) to 1 (severe change).
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