The choice of fume hood should consider the problem:

The test bench is finished. The fume hood is not a separate device. The change of the external environment will affect the function of the fume hood, and its control system will also affect the environment around him. So we should consider the following points when we choose:

1. Consider the elements of the entire system, such as the space in the laboratory, the ventilation control system of the building, the organization of the exhaust pipe, and the layout of the ventilator.

2. You need to consider which type of fume hood you need. When you choose, you can measure it according to the following:

(1) There are three styles: standard type, low table, floor type.

(2) Whether the external wind speed of the fume hood can reach the safe wind speed standard: 0.5m/s (rule: as long as the ground wind speed reaches 0.5m/s, it can be used for the trapping of harmful gases in the cabinet).

(3) Whether the opening height of the fume hood can meet your requirements for the operating space.

(4) Ventilation control system: The constant air volume and variable air volume are still adaptive control systems.

(5) Lining board material: PP, glass fiber or polyethylene resin.