This International Standard specifies a method for de-termining the behaviour of a basic dye in relation to its compatibility with other basic dyes when applied to acrylic fibres in the presence of those basic dyes.
BS EN ISO 105-Z03:1998 history
1998BS EN ISO 105-Z03:1998 Textiles - Tests for colour fastness - Intercompatibility of basic dyes for acrylic fibres