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BS 5688-7:1979
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BS 5688-7:1979 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 copper content of boric acid, boric oxide and disodium tetraborates
standard by BSI Group, 02/28/1979
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Photometric method.Cross References:
BS 3978
BS 5688:Part 0