This standard was last reviewed* in 2013.
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.
Edition: 1 (Monolingual) ICS: 71.060.40 Status: Published Stage: 90.93 (2013-10-01) TC/SC: ISO/TC 47 Number of Pages: 2
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No corrigenda or amendments available