How to choose a safe laboratory fume hood

In recent years, the state has strongly supported research and personnel training, and the laboratory is also equipped with high-quality experimental benches and fume hoods.

Safety is the biggest mission pursued by fume hoods. The use of fume hoods in laboratories is to ensure that experimenters can safely conduct experiments and effectively prevent pollution in the surrounding environment.

The exhaust structure of the fume hood has a great influence, and the single-slot exhaust structure can effectively discharge harmful objects. The streamlined handlebar, because of the gap between the handlebar and the glass, causes the flow of air on the tabletop to rotate, thereby ensuring efficient air intake. If the fume hood is made of tempered glass in the glass window, even if the glass accidentally breaks or explodes, there will be no accidents. The shell is made of metal material, the fire is not flammable, and the inner cavity is made of anti-double or stainless steel. Material, the countertop uses solid core physicochemical board or stainless steel board to prevent acid and alkali, heat and flame retardant.

When constructing the laboratory, select the installation position of the fume hood and the fume hood. You need to select the type, material, shape, etc. of the fume hood according to the experimental content. Generally, the following should be considered:

1. Drugs used: When using organic or other special reagents, consider controlling the wind speed.

2. When testing radioactive materials: a dedicated fume hood should be used, and the inlet air velocity must be set greater than 0.5m/s.

3. When experimenting with large equipment: Consider the internal effective size and leave the necessary space for exhaust.

4. Environmental protection: If the harmful gases discharged exceed the national sanitary standards, the necessary purification devices should be installed.

5. Energy saving: In the room with heating or air conditioning, the air-filling fume hood should be used or the fume hood with air volume control should be selected.

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