EN ISO 15703 / IUF 423：

Fastness of the colour of leather to hand washing is the resistance to washing under mild domestic laundering in water.
In washing leather, not only changes in colour can occur in the leather, but coloured substances may bleed from it and may stain adjacent textile materials.

 

Method：

The samples of dyed leather in contact with undyed textiles, e.g. multi-fibre strips or wool and cotton, are agitated in a neutral solution of a synthetic detergent (5g/l sodium lauryl sulphate) for 30 min. at 30°C. The samples are rinsed and dried.

The change in colour of the leather specimen (N) compared with the original sample (Tq) and the staining of the textiles are assessed with standard Grey Scales.

(CA = acetate, CO = cotton, PA = polyamide, PES = polyester, PAC = Polyacrylic, WO = wool)