Posted on February 1, 2019February 2, 2019 by Pulse AssentISO 20921:2019 Textiles. Determination of stable nitrogen isotope ratio in cotton fibres Link: ISO 20921:2019 Textiles. Determination of stable nitrogen isotope ratio in cotton fibres Source: BSI Standards Related Posts:UK to launch talks with Switzerland on new trade dealNew laws to introduce digital labelling for…UK and Singapore Enhance Cooperation in Sustainable…Small businesses benefitting more than ever from…UK government sets out AI Safety Summit ambitions