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.
Document identifier
ISO 7108:1985
Title
Ammonia solution for industrial use -- Determination of ammonia content -- Titrimetric method
ISO Category
TC 47: Chemistry
Publication date
1985-06-01
International Relationship
BS 4651-2:1987
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