DIN EN ISO 1833-7:2011 Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) (ISO 1833-7:2006); German version EN ISO 1833-7:2010
2017DIN EN ISO 1833-7:2017-12 Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibres (method using formic acid) (ISO 1833-7:2017); German version EN ISO 1833-7:2017
2017DIN EN ISO 1833-7:2017 Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibres (method using formic acid) (ISO 1833-7:2017)
2011DIN EN ISO 1833-7:2011 Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) (ISO 1833-7:2006); German version EN ISO 1833-7:2010
1975DIN 54220:1975 Testing of textiles; quantitative analysis of binary mixtures, polyamide 6 6 or polyamide 6 fibres with other fibres, formic acid method