GB/T 5174-2018表面活性剂洗涤剂阳离子活性物含量的测定直接两相滴定法国家标准
英文:Surface active agents—Detergents—Determination of cationic-active matter content—Direct two-phase titration procedure...
英文:Surface active agents—Detergents—Determination of cationic-active matter content—Direct two-phase titration procedure...