Објављен
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.
ОБЈАВЉЕН
ISO 7108:1985
90.93
Одлука о потврђивању стандарда
14. 2. 2025.