Assessment Aids
It is used to evaluate staining and fading in the color fastness test. It is divided into 1-5 grades, with half-step increments. The gray card is composed of nine pairs of matt neutral gray pieces, which display distinguishable color differences. Provide the corresponding fastness registration. It is used to evaluate staining and fading in the color fastness test described in ISO 105-A02 and ISO 105-A03.