BS EN ISO 1833-6:2010 Textiles. Quantitative chemical analysis. Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride)
2019BS EN ISO 1833-6:2019 Textiles. Quantitative chemical analysis. Mixtures of viscose, certain types of cupro, modal or lyocell with certain other fibres (method using formic acid and zinc chloride)
2011BS EN ISO 1833-6:2011 Textiles. Quantitative chemical analysis. Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride)
2011BS EN ISO 1833-10:2010 Textiles. Quantitative chemical analysis. Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane)
1988BS 4407:1988 Methods for quantitative analysis of fibre mixtures