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BS 5688-17:1979 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 iron content of boric acid, boric oxide, di-sodium tetraborates, sodium perborates and crude sodium borates
standard by BSI Group, 02/28/1979
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