ISO 1833-6:2007 Textiles -- Quantitative chemical analysis -- Part 6:Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method
ISO 1833-6:2007 Textiles -- Quantitative chemical analysis -- Part 6:Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride)