NBN EN ISO 2871-2-1995 表面活性剂.洗涤剂.阳离子活性物含量测定.第2部分:低分子团(200-500)的阳离子活性物质(ISO 2871-2-1990)
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)