GB/T 2910.4-2022: Textiles - Quantitative chemical analysis - Part 4: Mixtures of certain protein fibres with certain other fibres(method using hypochlorite)

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Scope

This document specifies a method for the determination of the protein fiber content of
certain protein fibers and certain non-protein fiber bi-component mixtures, which
consists of the following fibers, after removal of non-fibrous matter by the hypochlorite
method:
- Sheep wool, other animal hair fibers (e.g. cashmere, mohair), silk, regenerated
protein fibers, and
- Cotton, cupro fibers, viscose fibers, modal fibers, lyocell fibers, acrylonitrile fibers,
chlorine fibers, polyamide fibers, polyester fibers, polypropylene fibers, glass
fibers, polyurethane elastane fibers, polyester laminate elastane fibers, polyolefin
elastane fibers, melamine and polypropylene/polyamide composite fibers.

Basic Data

Standard ID	GB/T 2910.4-2022 (GB/T2910.4-2022)
Description (Translated English)	Textiles - Quantitative chemical analysis - Part 4: Mixtures of certain protein fibres with certain other fibres(method using hypochlorite)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.01
Word Count Estimation	10,138
Date of Issue	2022-12-30
Date of Implementation	2023-07-01
Older Standard (superseded by this standard)	GB/T 2910.4-2009
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration