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Member Since 17 Years
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GST No. 06ADWPC2191D1ZNAsk for more detail from the seller
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SDC Grey Scale For Change in Colour as per ISO standards.
The grey scale consists of nine pairs of non-glossy neutral grey coloured chips, which illustrate the perceived colour differences. These give a corresponding fastness rating of 5, 4-5, 4, 3-4, 3, 2-3, 2, 1-2, and 1.
They are used in the assessment of colour change occurring in fastness tests as described in ISO 105-A02. They are also essential in the grading of light fastness tests when using the Light Fastness Standards.
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