BS 4427-13-1982
工業用三磷酸鈉(三磷酸五鈉)和焦磷酸鈉(焦磷酸四鈉)的試驗方法.工業(包括食品)用縮聚磷酸鹽.鈣含量測定.火焰原子吸收光譜法
Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use - Condensed phosphates for industrial use (including foodstuffs) - determination of calcium content - flame atom