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This part of ISO 1833 specifies a method using trichloroacetic acid and chloroform to determine the percentage of polyester fibres after removal of non-fibrous matter, in textiles made of binary mixtures of polyester fibres with other fibres, except one type of aramid (polyamide imide), polyamide, chlorofibre and modacrylic. This document (EN ISO 1833-25:2013) has been prepared by Technical Committee ISO/TC 38 "Textiles", in collaboration with Technical Committee CEN/TC 248 "Textiles and textile products", the secretariat of which is held by BSI (United Kingdom). The responsible German committee is NA 062-05-12 AA "Textilchemische Prüfverfahren und Fasertrennung" ("Testing methods for separation and chemistry of textile fibres") at the Material Testing Standards Committee (NMP) at DIN.
This document has been replaced by: DIN EN ISO 1833-25:2020-11 .