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See Chinese contents: GB/T 3050-2000 GB/T 3050-2000: Inorganic chemical products for industrial use. General method for determination of chloride content. Potentiometric method
This part of GB/T 30159 specifies two test methods for measuring stain resistance of textiles, namely liquid staining method and solid staining method; gives an evaluation index of stain resistance. This part applies to all types of textile fabrics and their products. According to the product type and purpose, it may select one or two methods. The test results, which are obtained by using different soils and methods, are not comparable. This part does not apply to coated fabrics for membrane structures. When the color of the specimen and the solid dirt are similar, it should not use the solid staining method for evaluation.
