COVENIN 808-1975 Venezuelan national standards for evaluation methods of color fastness in textile materials (gray scale used to evaluate color changes)
1.1 This standard includes the description of the gray scale to assess color transfers on textile materials and how to apply it in fastness tests. 1.2 A precise colorimetric specification of this scale is given, which makes it possible to verify whether the newly prepared gray scales or those that could be altered after a certain use, correspond to this specification.
COVENIN 808-1975 history
1975COVENIN 808-1975 Venezuelan national standards for evaluation methods of color fastness in textile materials (gray scale used to evaluate color changes)