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 1833-22:2013 is applicable, after removal of non-fibrous matter, to binary mixtures of viscose or certain types of the current cupro or modal or lyocell fibres with flax fibres.If a cupro or modal fibre is found to be present, a preliminary test shoul