GB/T 2910.7-2025: Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibers (method using formic acid)

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Scope

This document describes the method using formic acid for the determination of the fiber
content of two-component mixtures of polyamide fibers and certain other fibers after
removal of non-fibrous matter.
-- polyamide fiber;
-- cotton, viscose fiber, cuprammonium fiber, modal fiber, lyocell fiber, flax fiber,
ramie fiber, hemp fiber, polyester fiber, polyethylene fiber, polypropylene fiber,
chlorinated fiber, polyacrylonitrile fiber, glass fiber, polyester composite elastic
fiber, polyolefin elastic fiber, melamine fiber, sheep wool or other animal hair
fibers.
This document does not apply to two-component mixtures of sheep wool or other
animal hair fibers, whose fiber content exceeds 25%, with polyamide fiber.

Basic Data

Standard ID	GB/T 2910.7-2025 (GB/T2910.7-2025)
Description (Translated English)	Textiles - Quantitative chemical analysis - Part 7: Mixtures of polyamide with certain other fibers (method using formic acid)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	W04
Classification of International Standard	59.080.01
Word Count Estimation	10,129
Date of Issue	2025-02-28
Date of Implementation	2027-03-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration