DS DS/EN ISO 11640
DS DSEN SO 11640 1999-FEB-08 Leather - Tests for colour fastness - Colour fastness to cycles of to-and-fro rubbng
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This International Standard specifies a method for determining the behaviour of the surface of a leather on rubbing with felt. Note 1: During the test, the felt may become coloured to a certain extent through transfer of coloured matter, e.g. finish, pigment, dyestuff or buffing dust, and the colour and surface of the leather may become altered.