Download or read book GB T 38409 2019 Translated English of Chinese Standard GBT 38409 2019 GB T38409 2019 GBT38409 2019 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2021-04-17 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the determination method of N-methyl-2-pyrrolidone (NMP) and N-ethyl-2-pyrrolidone (NEP) content in leather and its products. This standard is applicable to the determination of NMP and NEP in various leather and its products.