GB/T 2910.4-2009: Textiles -- Quantitative chemical analysis -- Part 4: Mixtures of protein and certain other fibers (method using hypochlorite)

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Scope

This Part of GB/T 2910 specifies a method, using hypochlorite, to determine
the percentage of protein fibre, after removal of non-fibrous matter, in textiles
made of binary mixtures of certain non-protein fibres and one protein fibre, as
follows.
wool, chemically-treated wool, other animal-hair fibres, silk, regenerated protein
fibres based on casein, and cotton, cupro, viscose, modal, acrylic, chlorofibres,
polyamide, polyester, polypropylene, glass and elastane.
If several protein fibres are present, the method gives the total of their amounts
but not their individual quantities.

Basic Data

Standard ID	GB/T 2910.4-2009 (GB/T2910.4-2009)
Description (Translated English)	Textiles -- Quantitative chemical analysis -- Part 4: Mixtures of protein and certain other fibers (method using hypochlorite)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.01
Word Count Estimation	6,682
Date of Issue	2009-06-15
Date of Implementation	2010-01-01
Older Standard (superseded by this standard)	GB/T 2910-1997
Quoted Standard	GB/T 2910.1
Adopted Standard	ISO 1833-4-2006, IDT
Regulation (derived from)	National Standard Approval Announcement 2009 No.8 (Total No.148)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the method of measurement using hypochlorite go unless certain protein fiber after fiber material consists of the following fibers and certain non-protein fiber two-component mixture of a protein fiber content: wool, chemically treated wool, other animal fibers, silk, casein protein fiber and cotton regeneration, copper ammonia fiber, viscose fiber, modal fiber, polyacrylonitrile fibers, chlorine fiber, polyamide fiber, polyester fiber, polypropylene fiber, glass fibers and elastic fibers. If the fabric of several protein fibers are present, this method can only determine the total amount of their respective amounts can not be obtained.