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配制大型输液的过滤,根据设备条件,有常压、减压和加压等方法。中等规模的医院药房,配制量在50万毫升以下,目前大都采取减压法。用二只减压瓶交替过滤,连续灌装,工效快,质量高。这种装置的缺点是管道多,八根皮管需要八只夹子,有时造成手忙脚乱顾此失彼,液体吸入真空泵。如用玻璃单向活塞和三通活塞虽可减少几只夹
Preparation of large transfusion filtration, according to equipment conditions, there are atmospheric pressure, decompression and pressure and other methods. Medium-sized hospital pharmacy, formulated in 500000 ml below, most of the current decompression method. Alternate filtration with two pressure-reducing bottles, continuous filling, efficient, high quality. The disadvantage of this device is that there are more ducts and eight needles for eight hoses, sometimes causing confusion and loss of fluidity. The liquid is drawn into the vacuum pump. As with the glass one-way piston and three-way piston can reduce the number of clips