2017BS EN ISO 1833-7:2017 Textiles. Quantitative chemical analysis. Mixtures of polyamide with certain other fibres (method using formic acid)
2011BS EN ISO 1833-7:2011 Textiles. Quantitative chemical analysis. Mixtures of polyamide and certain other fibres method using formic acid
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