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近年来输液制剂的过滤,都用微孔滤膜来提高澄明度,但使用微孔滤膜时,辩认滤膜正反面有时确感困难。根据我们使用的体会,介绍两种简易鉴别法。一、对光反射鉴别法: 把滤膜放在干燥洁净的手掌上面,手伸直和眼平视,对着窗户光线,眼看到光洁反光最显著的一面为正面。孔径1 .2微米明显。二、手掌温度鉴别法: 同法把滤
In recent years, the filtration of infusion preparations has been improved with microporous membranes. However, when microfiltration membranes are used, it is sometimes difficult to identify the front and back surfaces of the filtration membranes. Based on the experience we used, we introduced two simple identification methods. First, the light reflection identification method: The filter on the dry and clean palm surface, hands straight and eye level, facing the window light, the most obvious side of the eye to see the clean and reflective for the front. Aperture of 1. 2 microns is obvious. Second, palm temperature identification method: the same law to filter