Laboratory vacuum filter is a common instrument in the laboratory, which can be used to separate particulate matter from liquid samples. The following points should be paid attention to in the daily use of vacuum filtration:
1. Suitable vacuum pump should be used to match the vacuum filter bottle. If the pressure is too high, the vacuum pump may damage the filter membrane or the filter bottle during the filtration process. If the pressure is too low, the filter effect can not be achieved.
2. Every time the sample is filtered, attention should be paid to the liquid level in the collection bottle, and the remaining liquid should be poured out in time before the collection bottle is full. Once the collecting bottle is full, it will continue to work, which will lead to the liquid being sucked into the vacuum pump, which is very easy to cause damage to the vacuum pump.
3. After each use of the filter bottle, attention should be paid to cleaning in time to avoid bacterial growth. If it is necessary, high temperature and high-pressure sterilization should be carried out in time.
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