BS EN 20105-A02:1995 Textiles. Tests for colour fastness - Part A02. Grey scale for assessing change in colour
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This part of ISO 105 describes the grey scale for de- termining changes in colour of textiles in colour fast- ness tests, and its use. A precise colorimetric specification of the scale is given as a permanent record against which newly prepared working stan- dards and standards that may have changed can be compared.