Fume hood safety and maintenance
The fume hood is an integral part of the laboratory ventilation design. In order to prevent laboratory workers from inhaling or ingesting some toxic, pathogenic or toxic chemicals and organisms, there should be good ventilation in the laboratory.
Its security
Safety is the mission of the fume hood. The use of fume hoods in the laboratory is to ensure the safety of users and to prevent pollution to the surrounding environment.
1. Adopt three-stage exhaust structure to effectively discharge harmful gases.
2. Streamlined handle, leaving a gap between the handle and the glass. The flow of air on the table is rotated, ensuring effective intake from the surface.
3. Set the window anti-drop pin, in case the wire rope off the glass window accidentally falls, the anti-drop pin will catch up and prevent the person from being injured.
4. The glass window is made of tempered glass. Even if the glass accidentally breaks or explodes, there will be no accident.
5. Ventilation holes are provided in the upper part of the fume hood to allow air to enter even if the glass window is closed to avoid greater negative pressure.
Its use and maintenance are as follows:
1. In the course of the experiment, the experimental device for generating harmful substances shall be placed at a place where the operating port of the cabinet of the fume hood is greater than 150 MM to prevent the spillage of harmful substances;
2. The experimental device of the fume hood should not obscure the exhaust slit;
3. After the experiment is completed, the fan should not be turned off immediately, and it will take 3~5 minutes to turn off;
4. The fume hood should not be used as a storage cabinet;
5. The inside of the fume hood should always keep the inner surface of the cabinet clean and sealed. It should be thoroughly cleaned and cleaned regularly. If it is damaged, it must be repaired in time;
6. Fans, ducts and related accessories should be regularly inspected.
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