NF G07-010-5*NF EN ISO 105-A05:1997 Textiles. Tests for colour fastness. Part A05 : instrumental assessment of change in colour for determination of grey scale rating.
1997NF G07-010-5*NF EN ISO 105-A05:1997 Textiles. Tests for colour fastness. Part A05 : instrumental assessment of change in colour for determination of grey scale rating.