DS DS/EN ISO 3668
DS DSEN SO 3668 2001-AUG-27 Pants and varnshes - Vsual comparson of the colour of pants
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This standard is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products. It specifies a method for the visual comparison of the colour of films of paints or related products against a standard using either natural daylight or artificial light sources in a standard booth.