ISO 1833-20-2009 Textiles -- Quantitative chemical analysis -- Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide)
ISO 1833-22 Textiles -- Quantitative chemical analysis -- Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chloride)
ISO 1833-23. Textiles. Quantitative chemical analysis. Part 23. Mixtures of polyethylene and polypropylene (method using cyclohexanone)
ISO 1833-24:2010 Textiles -- Quantitative chemical analysis -- Part 24: Mixtures of polyester and certain other fibres (method using phenol and tetrachloroethane)
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