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See Chinese contents: GB/T 2910.22-2009 GB/T 2910.22-2009: Textiles -- Quantitative chemical analysis -- Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax of ramie fibres (method using formic acid and zinc chloride)
This Part of GB/T 2910 specifies using formic acid and zinc chloride method to determine, after removing the non-fibrous substances, the fiber contents in the binary mixtures of viscose, certain type of cupro, modal, lyocell, flax, and ramie.
