ISO 105-Z02:1993

Textiles — Tests for colour fastness — Part Z02: Colour fastness to metals in the dye-bath: Iron and copper

The principle of the method specified is assessing the difference in colour between dyeings made in the presence and in the absence of salts of the metal present (due to its use in the construction of dying machinery or resulting from water and steam used in dyeing) with the grey scale.