This method was an improvement on acid dye direct titration. 对酸性染料直接滴定法作了改进。
Methods The method of determining dexamethasone sodium phosphate and ephedrine hydrochloride by HPLC and acid-base titration was used. 方法采用高效液相色谱法和直接滴定法测定制剂中主药地塞米松磷酸钠和盐酸麻黄碱的含量。