AATCC Evaluation Procedure 2-2007
Developed in 1954 by AATCC Committee RA36
1.1 This evaluation procedure describes the use of the Gray Scale for evaluating staining of unstained textiles resulting from colorfastness tests. 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 may have been changed, can be compared.
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