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Pipeline water well filter 10 Are you asking about a water-filter well?The well filter is a filter layer after the casing opening of the lower water intake section when the well is formed,Is part of the well.After the water in the water intake section of the bottom of the drilled well passes through the filter material filled in during drilling,Then enter the well through the filter pipe,The water lifting tool (submersible electric pump) installed in the well will be put forward in the filtered water self-well.
What are the biosafety measures in the microbiology laboratory? The three-level biosafety laboratory can be located in a building with other use houses,But it must be self-contained.The district is separated from public corridors or public parts by isolation doors.2.2 Layout a) the core area of the three-level biosafety laboratory includes the experimental room and the buffer room connected to it.B) the buffer forms a channel into the experiment.There must be two chain doors,When one of the doors opens,The other door is automatically closed.Such as the use of electric chain devices,Both doors must be open when power is out.A secondary dressing can be performed in the buffer room.C) when there is no automatic control device in the ventilation system of the laboratory,The buffer area should not be too large,It should not exceed 1/8 of the experimental area.D) the installation position of class II or Class III biosafety cabinet should be far away from the entrance of the experimental room,Avoid areas where staff
