This standard specifies the gray scale and its application method for evaluating the color change of textiles in the color fastness test of textiles. This standard provides the precise colorimetry grade value of the gray sample card, which can be used as a permanent record for comparison between the newly produced gray sample card and the gray sample card that may change.
GB/T 250-2008 history
2008GB/T 250-2008 Textiles.Tests for colour fastness.Grey scale for assessing change in colour
1995GB 250-1995 Gray scale for assessing change in colour
1984GB 250-1984 Textile color fastness test to washing
GB/T 250-2008 Textiles.Tests for colour fastness.Grey scale for assessing change in colour has been changed from GB 250-1995 Gray scale for assessing change in colour.