DIN EN 14668 Berichtigung 1-2006 表面活性剂.原材料和按配方制造产品中季铵表面活性剂的测定.电位测量两相滴定法
Surface active agents - Determination of quaternary ammonium surface active agents in raw materials and formulated products - Potentiometric two-phase titration method; German version EN 14668:2005, Corrigenda to DIN EN 14668:2005-09; German version EN 14