BS 4427-11:1983(2011)
工业用三聚磷酸钠(三磷酸五钠)和焦磷酸钠(焦磷酸四钠)的试验方法 第11部分:柱色谱分离和不同磷酸盐形式的测定
Methods of test for Sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use — Part 11 : Separation by column chromatography and determination of the different phosphate forms