How to identify which dye is used on the fabric (yarn)-Sulfur dyes？ 2021-01-19
1 Sampling and pretreatment The key steps to identify the types of dyes on cellulose fibers are sampling and sample pretreatment. When taking the sample, the part of the same dye should be taken. If the sample contains several shades, each shade should be taken. If fiber identification is required,
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