BS ISO 105-X19:2020 pdf free.Textiles - Tests for colour fastness.Colour fastness to rubbing (Gakushin test method). BS ISO 105-X19 This document specifies the test method for determining the resistance of the colour of textiles of all kinds to rubbing off and staining other materials using convex specimen stage (Gakushin test method). Two test methods are specified, one with a dry...