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目前广泛使用的自动零点滴定装置,存在三个缺点:结构不够紧凑,运输过程中易损坏;再者是,回流通道上靠近小球的毛细孔的大小不易作得合适,孔径稍一大,打气进液时,溶液迅速从回流管进入滴定管上面的膨大部分,使这一储液部分很快注满而外溢,但滴定管仍未来得及注满;此外,操作步骤多,需要来回转动玻璃活塞,若动作配合得不好,则不易对准零点,对初使用者犹
Currently widely used automatic zero titration device, there are three shortcomings: the structure is not compact, easy to damage during transport; Also, the reflux channel near the small ball of the size of the hole is not easy to make appropriate, slightly larger aperture, cheer When the liquid enters, the solution rapidly enters the enlarged part of the burette from the reflux tube, so that the liquid part of the liquid will quickly fill up and spill out, but the burette is not yet filled in. In addition, there are many operation steps and the glass piston needs to be rotated back and forth. Action is not well matched, it is not easy to align the zero point, still young users