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Normas DIN – AENOR
DIN EN ISO 1833-22:2020-07

DIN EN ISO 1833-22:2020-07

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/DIS 1833-22:2020); German and English version prEN ISO 1833-22:2020 / Note: Date of issue 2020-06-05*Intended as replacement for DIN EN ISO 1833-22 (2013-07).

Textiles - Analyse chimique quantitative - Partie 22: Mélanges de viscose ou de certains types de cupro, modal ou lyocell et de fibres de lin (méthode à l'acide formique et au chlorure de zinc) (ISO/DIS 1833-22:2020); Version allemande et anglaise prEN ISO 1833-22:2020 / Attention: Date de parution 2020-06-05*Prévu pour remplacer DIN EN ISO 1833-22 (2013-07).

Textilien - Quantitative chemische Analysen - Teil 22: Mischungen aus Viskose oder bestimmten Arten von Cupro-, Modal- oder Lyocellfasern mit Flachsfasern (Ameisensäure-/Zinkchlorid-Verfahren) (ISO/DIS 1833-22:2020); Deutsche und Englische Fassung prEN ISO 1833-22:2020 / Achtung: Erscheinungsdatum 2020-06-05*Vorgesehen als Ersatz für DIN EN ISO 1833-22 (2013-07).

Fecha:
2020-07 /Active
Equivalencias internacionales:

ISO/DIS 1833-22 (2020-06)

prEN ISO 1833-22 (2020-06)

Resumen:
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. If a cupro or modal fibre is found to be present, a preliminary test should be carried out to see whether it is soluble in the reagent. 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.
Keywords:
Analysis, Chemical analysis and testing, Cupro, Determination of content, Fibre mixtures, Fibres, Flax, Formic acid, Lyocel, Mathematical calculations, Mixtures, Modal, Moisture, Moisture contents, Plastics, Preparation, Properties, Quantitative analysis, Samples, Separation, Temperature, Testing, Textile fibre blends, Textile fibres, Textile testing, Textiles, Viscose, Zinc chloride
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