ISO 1833-4:2023

INTERNATIONAL ISO
STANDARD 1833-4
Third edition
2023-09
Textiles — Quantitative chemical
analysis —
Part 4:
Mixtures of certain protein fibres with
certain other fibres (method using
hypochlorite)
Textiles — Analyse chimique quantitative —
Partie 4: Mélanges de certaines fibres protéiniques avec certaines
autres fibres (méthode à l'hypochlorite)
Reference number
© ISO 2023
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Test procedure .2
8 Calculation and expression of results . 3
9 Precision . 3
iii
Foreword
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This document was prepared by Technical Committee ISO/TC 38, Textiles in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile
products, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This third edition cancels and replaces the second edition (ISO 1833-4:2017), which has been technically
revised.
The main changes n are as follows:
— in 5.1.2, the instruction for the preparation of the sodium hypochlorite solution has been detailed.
A list of all parts in the ISO 1833 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards b
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