ISO 7108:1985
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Ammonia solution for industrial use Determination of ammonia content Titrimetric method
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06-06-1985
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.
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