GREYSCALE
Product Information
➢Comes in ISO standard (from S.D.C UK) and American standard from AATCC – USA.
➢ Helps grading the tested specimen after conducting the rubbing test (grey scale for staining) and wash fastness test (grey scale for color change).
➢ Also used for color matching with original specimen (grey scale for color change).
➢ Grading of 1 up to 5 can be done.
Products Components
3305 SDC Grey Scale for Change in Color (ISO)
➢ The grey scale includes nine pairs of non-glossy neutral grey chips, each representing perceived color differences, with corresponding fastness ratings of 5, 4-5, 4, 3-4, 3, 2-3,
2, 1-2, and 1.
➢ They are used to assess color changes in fastness tests as outlined in ISO 105-A02 and are crucial for grading light fastness tests using the Light Fastness Standards.
3355 SDC Grey Scale for Staining (ISO)
➢ The grey scale includes nine pairs of non-glossy grey and white chips, representing the perceived depth of staining, with corresponding fastness ratings of 5, 4-5, 4, 3-4, 3, 2-3,2, 1-2, and 1.
➢ They are used to assess the amount of staining occurring on adjacent undyed fabrics during fastness tests. Their use is described in ISO 105-A03.
AATCC EP1 Gray Scale for Color Change
➢ This evaluation procedure outlines the use of a Gray Scale to visually assess color changes in textiles from colorfastness tests. For instrumental evaluation of color change in a test specimen, refer to AATCC Evaluation Procedure 7.
➢ A precise colorimetric specification of the differences between the reference and the 9 Step scale is provided as a permanent record for comparing newly prepared Gray Scales
and old scales that may have changed.
AATCC EP2 Gray Scale for Staining
➢ This evaluation procedure outlines the use of the Gray Scale to assess staining of unstained textiles caused by colorfastness tests.
➢ A precise colorimetric specification of the differences between the reference and the 9 Step scale is provided as a permanent record, allowing comparisons with both newly
prepared Gray Scales and older scales that may have changed.
➢ American Association of Textile Chemists and Colorists, RTP, NC, USA. All rights reserved.
➢ The above information is only a summary of the AATCC Test method.