BS 5688-6:1979
工業(yè)用原硼酸(硼酸),三氧化二硼(氧化硼),四硼酸二鈉,高硼酸鈉與粗硼酸鈉的試驗(yàn)方法 硼酸,氧化硼和四硼酸二鈉中錳含量的測定
Methods of test for orthoboric acid (boric acid), diboron trioxide (boric oxide), disodium tetraborates, sodium perborates and crude sodium borates for industrial use - Determination of manganese content of boric acid, boric oxide and disodium tetraborate