国产微孔滤膜是由硝化纤维素和醋酸纤维素混合制成的多孔性薄膜滤过材料。在薄膜上分布有孔径均匀的微孔,孔隙率达80%左右。薄膜厚度一般约为0.12～0.15毫米。我们选用上海第十制药厂生产的滤膜,其使用规格平均孔径为0.65微米,0.8微米,1.2微米,圆片形的直径为150毫米等数种。我院制剂室采用这种滤膜制备大输液达 Domestic microporous membrane is a porous membrane filtration material made of nitrocellulose and cellulose acetate. Distribution in the film uniform pore size, porosity of about 80%. Film thickness is generally about 0.12 ~ 0.15 mm. We use the Shanghai Tenth Pharmaceutical Factory production of filters, the use of specifications for the average pore size of 0.65 microns, 0.8 microns, 1.2 microns, disc-shaped diameter of 150 mm and so on. Our hospital preparation room using this filter to prepare large transfusion up