EN ISO 15702 / IUF 435 ：
Fastness of the colour of leather to machine washing is the resistance to washing under domestic machine 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 solution of a standard wash detergent (4g/l ECE Colour Fastness Test Detergent 77) for 30 min. at 40°C. The samples are rinsed and dried.
The change in colour of the leather specimen (N) is compared with the original leather 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).
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