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ISO 7108:1985
M00001915
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ISO 7108:1985 Ammonia solution for industrial use -- Determination of ammonia content -- Titrimetric method
standard by International Organization for Standardization, 06/01/1985
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A test portion is introduced into a solution of boric acid and the solution obtained is titrated with a standard volumetric solution of sulfuric acid in the presence of methyl red as indicator. The method is applicable to solutions containing not more than 35 % (m/m) of ammonia.