ISO 1658-2022 天然橡胶(NR)--评估程序

ISO 1658-2022天然橡胶(NR)--评估程序【适用范围】This document specifiesbr />— physical and chemical tests on raw natural rubbers;br />— standard materials, standard test formulae, equipment and processing methods for evaluating the vulcanization characteristics of natural rubber (NR).【正文命中】ERNATIONAL ISO STANDARD 1658 Fifth edition 2022-01 Natural rubber (NR) — Evaluation procedure Caoutchouc naturel (NR) — Méthode d\'évaluation Reference number ISO 1658:2022(E) ？ ISO 2022 ISO 1658:2022(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of t【中国标准分类】  G04  化工综合【国际标准分类】  83.060-橡胶现行发布日期：2022-01-01