GB/T 2910.5-2009: Textiles -- Quantitative chemical analysis -- Part 5: Mixtures of viscose, cupro or modal and cotton fibers (method using sodium zincate)

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Scope

This part of GB/T 2910 specifies a method, using sodium zincate, to determine the
percentage of viscose, cupro or modal fibre, after removal of non-fibrous matter, in
textiles made of binary mixtures of
- viscose or most of the current cupro or modal fibres, and
- raw, scoured, kiered or bleached cotton.
Where a cupro or modal fibre is present, a preliminary test should be carried out to
see whether it is soluble in the reagent.
This part is not applicable to the mixtures in which the cotton has suffered extensive
chemical degradation. It is also not applicable to viscose, cupro or modal fibre in
which there exists un-removable durability finishing agent or reactive dyes, so that it
cannot be completely dissolved.
2  Normative references
The articles contained in the following documents have become this part of GB/T
2910 when they are quoted herein. For the dated documents so quoted, all the
modifications (excluding corrections) or revisions made thereafter shall not be
applicable to this part. For the undated documents so quoted, the latest editions shall
be applicable to this part.
GB/T 2910.1 Textiles - Quantitative chemical analysis - Part 1. General principles of
testing (GB/T 2910.1-2009, ISO 1833-1. 2006, IDT)

Basic Data

Standard ID	GB/T 2910.5-2009 (GB/T2910.5-2009)
Description (Translated English)	Textiles -- Quantitative chemical analysis -- Part 5: Mixtures of viscose, cupro or modal and cotton fibers (method using sodium zincate)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.01
Word Count Estimation	6,629
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Older Standard (superseded by this standard)	GB/T 2910-1997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 1833-5-2006, 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 post unless viscose fiber material, or most of the existing copper ammonia fiber or modal and cotton fibers, scouring cotton or bleached cotton fiber content of a mixture of two components approach to measuring method using sodium zinc. If the sample has a copper ammonia fiber or modal fiber is present, you should test whether pre-soluble reagents. This section does not apply to mixtures of cotton fiber has been seriously chemical degradation, does not apply to viscose, cupro or modal presence of fibers can not be completely removed durable finishing agents or dyes, resulting in its not completely dissolved.