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Fume hood, protective place for toxic and volatile chemicals

Fume hoods are also called cabinet exhaust hoods, which are designed to provide personnel protection from toxic or volatile chemicals by continuously conveying airflow from the user to the work area. The air is then filtered and/or treated by the building's exhaust system before leaving the facility. The size of the fume hood is divided into widths of 1200mm/1500mm/1800mm (the actual size depends on the actual situation). Generally, do not put any equipment within 150mm from the glass window. Large experimental equipment should have sufficient space and should not affect the air The front window should be closed as much as possible.

Fume hood application field


In the process of application of the fume hood, some internal principles are the key factors for the equipment to function. Correctly understand the internal principles of the equipment and know the specific conditions. Then, in the process of using it, you can better ensure safety. Therefore, if you want to ensure the quality, you must first check the internal technology, and it is also a key part.

Fume hood structure


Why use a fume hood:
1. The fume hood reduces the potential exposure hazards to personnel, including the concentration of pollutants near the edge of the window frame. The fume hood does not provide protection for the product or the environment.
2. Any toxic or volatile (chemical vaporization trend) chemical** should be used in a chemical fume hood to reduce the chance of inhalation exposure. Specially designed fume hoods need to provide protection against radiation hazards.
The noise generated by commonly used fume hoods must first be divided into two categories:
1. The wind noise generated by the fan when it is working: this is caused by the different quality of the fan. When the power of the fan is not large, install a rain cover above the fan to eliminate the wind noise. In the case of high fan power, install a muffler at the inlet and outlet of the fan to eliminate wind noise.
2. Mechanical noise: build a soundproof wall or a small black room, and add soft joints at the inlet and outlet of the fan to eliminate it. The solution to the vibration of the fan: make the base of the fan into a damping base and install a shock absorber or add a shock absorbing pad.
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