Calcium dobesilate and its capsules were determined by complexometric titration and UV spectrophotometry respectively. The methods were verified to be easily handled, accurate and reproducible.

• 采用络合滴定法和紫外分光光度法分别测定羟苯磺酸钙原料和胶囊的含量。方法简便、准确，重现性及稳定性均较好。