DIN EN ISO 1833-22 : 2021 Title: Textiles - Quantitative chemical analysis - Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell with flax fibres (method using formic acid and zinc chloride) (ISO 1833-22:2020) Year: 2021 Publisher: DIN Media GmbH Availability: Within 1-2 working days