The potentiometricmethod or the crystal violet indicator was used to indicate the end-point.
选用高氯酸— 冰醋酸标准液滴定，以电位法或结晶紫指示剂指示终点。
2
Objective: Adding two titrant standard solution volumes affecting acid base double point potentiometricmethod accuracy are discussed.
目的：探讨两次加入滴定剂标准溶液的体积对酸碱双点电位滴定法准确度的影响。
3
Conclusion: The acid base doub1e points potentiometricmethod is simple, rapid and precise, and has prospect of application in analysing organic weak acid and base medicines.