BS EN ISO 1833-7:2017

Textiles. Quantitative chemical analysis. Mixtures of polyamide with certain other fibres (method using formic acid) | Status: Confirmed, Current

1 Scope This document specifies a method, using formic acid, to determine the mass percentage of polyamide fibre, after removal of non-fibrous matter, in textiles made of mixtures of

• — polyamide

with

• — cotton, viscose, cupro, modal, lyocell, polyester, polypropylene, chlorofibre, acrylic, glass fibre, elastomultiester, elastolefin and melamine, or
• — wool (if the wool content is less than or equal to 25 %), or animal hair fibres.

This document does not apply when the wool content exceeds 25 %; ISO 1833‑4 applies.