scope:

Specifies a method for determining the resistance of the colour of textiles in all forms to the manufacuring operation designed to remove vegetable impurities by a treatment at high temperatures and with the cited chemical. The method is mainly applicable to wool and textiles containing wool, particularly those containing also acetate or polyamde fibres. The treated specimen is dried, baked, rinsed and neutralized. The changes in colour after rinsing, neutralizing and drying are assessed with the grey scale.