标准摘要
[中文适用范围]： 将测试部分引入硼酸溶液中，并在甲基红作为指示剂的存在下用硫酸标准体积溶液滴定所得溶液。 该方法适用于氨含量不超过35%（m/m）的溶液。 [外文原描述]： 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.
英文名称Ammonia solution for industrial use — Determination of ammonia content — Titrimetric method