NEN EN ISO 1833-4 : 2017
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TEXTILES - QUANTITATIVE CHEMICAL ANALYSIS - PART 4: MIXTURES OF CERTAIN PROTEIN FIBRES WITH CERTAIN OTHER FIBRES (METHOD USING HYPOCHLORITE)
12-01-2013
Describes a method, using hypochlorite, to determine the mass percentage of protein fibre, after removal of non-fibrous matter, in textiles made of mixtures of certain non-protein fibres and certain protein fibres, as follows: - wool, other animal-hair (such as cashmere, mohair), silk, protein, - cotton, cupro, viscose, modal, acrylic, chlorofibres, polyamide, polyester, polypropylene, glass, elastane, elastomultiester, elastolefin, melamine and polypropylene/polyamide bicomponent.
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