This document specifies a method, using a mixture of formic acid and zinc chloride, to determine the mass percentage of viscose, certain types of cupro, modal or lyocell, after removal of nonfibrous matter, in textiles made of mixtures of

— viscose, certain types of cupro, modal or lyocell,

with

— cotton.

This document has been initially specifically established for mixtures of viscose, certain types of cupro, modal or lyocell with cotton, it is also applicable to mixtures with polypropylene, elastolefin and melamine.

IMPORTANT — If a cupro or modal or lyocell fibre is found to be present, a preliminary test is carried out to see whether it is soluble in the reagent.

The method is not applicable to mixtures in which the cotton has suffered extensive chemical degradation. It is not applicable when the viscose, cupro, modal or lyocell fibre is rendered incompletely soluble by the presence of certain permanent finishes or reactive dyes that cannot be removed completely.

Test Requirement 测试要求：

纤维定量

Sample Size 样品数量 / 送样规格: on request
Lead Time / TAT (Turn Around Time) 测试周期: 常规服务 Regular service 7-9 working days

Report Summary 报告摘要:

检测实验室 | TESTING LAB：

安瑞检测认证(广东)有限公司 (CNAS及CMA认可实验室)

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