Gray Scale for Color Change and Color Staining Is on Sale

A gray scale graphic employs a combination of black and white to show the “value” of the colors. Gray scale is used to visually evaluate color changes in fabrics caused by colorfastness testing. Gray scale comes in two varieties: one for measuring color change and another for staining. The color change gray scale is made up of nine pairs of grey-colored chips ranging from 1 to 5. The staining scale is made up of nine pairs of grey and white chips with grades ranging from 1 to 5. https://fyitester.com/for-sale/gray-scale-for-color/

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