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See Chinese contents: GB/T 40912-2021 GB/T 40912-2021: Textiles -- Quantitative chemical analysis -- Mixtures of polyesteramide with certain other fibers
This Document describes a method for the determination of the content of polyesteramide fibers and certain other fibers in a two-component mixture of polyesteramide fibers and other fibers after removal of non-fibrous substances by the dissolution method. This Document applies to polyesteramide and cellulose fibers (cotton, flax, ramie, hemp, viscose fiber, modal fiber, lyocell fiber, etc.), protein fibers (sheep wool, cashmere, mulberry silk, etc.), polyamide fiber, polyacrylonitrile fibers, some modacrylic fibers, some chlorinecontaining fibers or two-component mixture of some elastic fibers and polyester fibers.
