The procedure doesn't use indicator and the precipitate doesn't to separate. The endpoint of titration is obvious. The operation is simple , fast , accuracy and good repetition.
该方法不用指示剂, 沉淀不必分离,具有终点直观、操作简单、快速准确、重现性好等特点。
2
The potentiometric method or the crystal violet indicator was used to indicate the end-point.