OBJECTIVE To study the stability and expiration of tetracainehydrochlorideinjection.
目的研究盐酸丁卡因注射液的稳定性及贮存期。
2
Objective: to evaluate the effect of instrument sensitivity on the concentration determination of tetracainehydrochlorideinjection using dead - stop titration method.
目的：探讨永停滴定法测定盐酸丁卡因注射液含量时采用不同灵敏度对含量测定的影响。
3
METHOD Prepare the hydrochloridetetracaine liposome by ethanol injection method, prepare hydrochloridetetracaine liposome gel by mixing method, and determine the liberation of drug by dialysis.