ISO 2871-1:2010规定了一种测定高分子量阳离子活性材料的方法，例如季铵盐化合物，其中两个烷基各自含有10个或更多碳原子，例如二硬脂基二甲基氯化铵，或长链酰胺乙基和烷基在1-和2-位置被取代的咪唑啉或3-甲基咪唑啉盐，分别地 该方法适用于活性物质的固体或水溶液。如果存在阴离子表面活性剂，则该方法不适用。

ISO 2871-1:2010 specifies a method for the determination of high-molecular-mass cationic-active materials such as quaternary ammonium compounds in which two of the alkyl groups each contain 10 or more carbon atoms, e.g. distearyl-dimethyl-ammonium chlorides, or salts of imidazoline or 3-methylimidazoline in which long-chain acylaminoethyl and alkyl groups are substituted in the 1- and 2-positions, respectively. The method is applicable to solids or to aqueous solutions of the active material. The method is not applicable if anionic surface active agents are present.