Reference number
ISO 20921:2019
ISO 20921:2019
© ISO 2025
International Standard
ISO 20921:2019
Textiles — Determination of stable nitrogen isotope ratio in cotton fibres
Edition 1
2019-02
2019-02
ISO 20921:2019
69461
Published
(Edition 1, 2019)
This publication was last reviewed and confirmed in 2024.
Therefore this version remains current.
Abstract
This document specifies the determination of the ratio of nitrogen isotopes in cotton fibres that are used for textile production. It applies not only to cotton textiles but also to raw cotton taken from cotton fields.
