M00001043
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ISO 1833-22 1st Edition, March 1, 2013 Textiles - Quantitative chemical analysis - Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax fibres (method using formic acid and zinc chloride)
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 1833 is applicable, after removal of
non-fibrous matter, to binary mixtures of
- viscose or certain types of the current cupro or model or
lyocell fibres with
- flax fibres.
If a cupro or model fibre is found to be present, a preliminary
test should be carried out to see whether it is soluble in the
reagent.
The part of ISO 1833 is not applicable to mixtures in which the
flax fibre has suffered extensive chemical degradation, nor when
the viscose, cupro, model or lyocell fibre is rendered incompletely
soluble by the presence of certain permanent finishes or reactive
dyes that cannot be removed completely.