本文件规定了用于测定原料中阴离子表面活性剂含量的方法，定义为阴离子表面活性剂以毫摩尔/ 100g产品表示的量。 注1:在各种情况下，应检查与测试产品不同的产品的适用性。 注2与通常的实验室两相滴定法（见ISO 2271）相比，电位滴定提供了自动化的优势，因此识别等同点的操作者相关差异可忽略不计，非关键溶剂替代了毒理学临界氯仿

This document specifies a method for the determination of the content of anionic surface active agents in raw materials, defined as being the amount of anionic surface active agents expressed in millimoles per 100 g of product. NOTE 1 The applicability in products different than those tested should be checked in each particular case. NOTE 2 In comparison to usual laboratory two-phase titration with visual endpoint determination (see ISO 2271) potentiometric titration offers the advantage of automation, operator-dependent differences in recognising the equivalence point can be neglected, and a non-critical solvent replaces the toxicologically critical chloroform.