AATCC Gray Scale for Colour Staining

This scale is used in colour fastness tests for evaluating staining on undyed textiles to ensure AATCC Standards are met. The staining scale consists of nine pairs of grey and white coloured chips from grades 1 to 5 (with four half steps).


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The American Association of Textile Chemists and Colorists (AATCC) is a not-for-profit professional association that develops the test methods, the test materials and the educational development of the textile industry across the world.

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