The content of involatile impurities in acetamidine hydrochloride was determined by gravimetric analysis.

采量分析法测盐酸乙脒中难挥发质的含量。

METHODS Sodium tetraphenylboron gravimetric analysis was replaced by highly-accurate nephelometric titrimetry to determine potassium chloride in Compound sodium chloride injection.

方法高精度散射光度法代替四苯硼钠量法。