呋喃西林与醋酸洗必泰制成复方制剂，由于醋酸洗必泰的加入，增加了抗菌力，其含量测定方法，呋喃西林可采用紫外分光光度法，在３７４ｎｍ波长处直接测定吸收度；醋酸洗必泰由于呋喃西林的干扰不能直接测定，因而采用双波长法，以２５６ｎｍ为测定波长，３５３ｎｍ为参比波长 Nitrofurazone and chlorhexidine acetate made of compound preparation, due to the addition of chlorhexidine acetate, an increase of antibacterial capacity, determination of its content, nitrofurazone UV spectrophotometry can be used to directly measure the absorption at a wavelength of 374nm; chlorhexidine acetate Due to the interference of nitrofurazone can not be directly measured, thus using the dual wavelength method, with 256nm as the measured wavelength, 353nm as the reference wavelength