Norm
[VERÖFFENTLICHT]
ISO 7108
ISO 7108
Ammoniaklösung für Industriezwecke; Bestimmung des Ammoniakgehaltes; titrimetrische Methode
Englischer Titel:
Ammonia solution for industrial use -- Determination of ammonia content -- Titrimetric method
Beschreibung
"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."