论文部分内容阅读
检查大输液中不溶性微粒时,样品需要过滤。目前大多采用真空泵抽滤的方法。但因真空泵产生的负压过大,抽滤速度快,操作时稍不注意就会引起滤膜抽得过干,同时也使格栅滤膜与滤器托架面贴得太紧,用平头镊夹取时很不方便。笔者在实贱中,采用抽滤瓶串联一只玻璃三通活塞,用100ml注射器抽滤(见附图)的方法,收到了满意的效果。操作时,先将样品倒入滤器中,然后旋转玻璃三通活塞至一定位置,使抽滤瓶与活塞及注射器联通,即可进行抽滤。如果样品未抽滤完,而注射器筒内
When inspecting large infusions of insoluble particles, the sample needs to be filtered. At present, most of the vacuum pump suction filtration method. However, due to the negative pressure generated by the vacuum pump is too large, suction filtration speed, the operation is a little careless will cause the filter drained too dry, but also to grille filter and filter holder surface paste too tight, with flat tweezers Clamped when it is not convenient. The author in the real cheap, the use of suction filter in series with a glass three-way piston, 100ml syringe suction filtration (see photo) method, received satisfactory results. Operation, the first sample into the filter, and then rotate the glass three-way piston to a certain position, the suction flask and the piston and syringe Unicom, you can carry out suction filtration. If the sample is not suction filtered, the inside of the syringe barrel