DIN EN ISO 2871-2:1994 表面活性剂.洗涤剂.阳离子活性物质含量的测定.第2部分:低分子量阳极活性物质(在 200 - 500 之间) (ISO 2871-2:1990); 德文版本 EN ISO 2871-1:1994
Surface active agents - Detergents - Determination of cationic-active matter content; Part 2: Cationic-active matter of low molecular mass (between 200 and 500) (ISO 2871-2:1990); German version EN ISO 2871-1:1994