DIN EN ISO 1183-1 E:2018 塑料 测定非泡沫塑料密度的方法 第1部分：浸泡法、液体比重瓶法和滴定法（ISO/DIS 1183-1:2018） 草案
Draft Document - Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion method, liquid pyknometer method and titration method (ISO/DIS 1183-1:2018); German and English version prEN ISO 1183-1:2018