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EVS-EN ISO 1833-22:2021

Textiles - Quantitative chemical analysis - Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell with flax fibres (method using formic acid and zinc chloride) (ISO 1833 22:2020)

General information
Valid from 17.08.2021
Base Documents
ISO 1833-22:2020; EN ISO 1833-22:2021
Directives or regulations
None
Standard history
Status
Date
Type
Name
17.08.2021
Main
02.04.2013
Main
This document specifies a method, using formic acid and zinc chloride, to determine the mass percentage of viscose or certain types of cupro or modal or lyocell, after removal of non-fibrous matter, in textiles made of mixtures of - viscose or certain types of the cupro or modal or lyocell fibres with - flax fibres. This document is not applicable to mixtures in which the flax fibre has suffered extensive chemical degradation, nor when the viscose, cupro, modal or lyocell fibre is rendered incompletely soluble by the presence of certain permanent finishes or reactive dyes that cannot be removed completely.
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