How A Clean Air Fume Hood Works

The clean air fume hood does not require external pipes, and has a fan and filter on the top. The switch cabinet and the fan are running to form a negative pressure in the cabinet to ensure that the chemicals do not overflow. The main wind direction is from the bottom to the top, so that all the air in the cabinet is filtered through the filter screen, and the clean air is discharged from the top. One is to purify the volatile chemical substances in the cabinet, and the other is that the air in the laboratory enters the cabinet, which can also purify the air in the laboratory.