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A Brief Analysis of Lab Furniture's Classification - Lab Fume Hood

lab fume hood
The ventilation of Laboratory is an integral part of laboratory design. In order to protect laboratory personnel from inhaling or swallowing certain toxic, potential toxic or toxic chemicals and organisms. The laboratory should be well ventilated. To prevent the absorption of some vapors, gases, and particulates (smoke, soot, dust, and air suspension), contaminants must be removed by means of using lab fume hood, hoods, or partial ventilation.
lab fume hood is the most commonly used partial exhaust equipment in the laboratory. There are many kinds of ventilation equipment, and the exhaust effect is different because of its different structures and different conditions of use. The performance of the lab fume hood is good or bad,  mainly depends on the speed of air moving through the lab fume hood.

There are six types of laboratory fume hood used in the laboratory:
①Item pumping lab fume hood: This type of fume hood is characterized by its simple structure and convenient manufacture. It is suitable for occasions where heat is generated.
②Slitting lab fume hood: it is provided with air exhaust slit at its top and back, which can achieve good effect in different working conditions. But the structure is more complex, and the production is also more troublesome.
③Bypass lab fume hood: when the laboratory considers the range air box to exclude the indoor air, it is ideal to use this kind of fume hood, because  the full close of the door will not affect the ventilation rate.
④Air filled lab fume hood: for air conditioning laboratory or clean laboratory, the use of this kind of fume hood is ideal. It not only saves energy, but also does not affect the indoor air flow organization.
⑤The natural ventilation lab fume hood: has the advantages of no power consumption; can
continuously ventilate (measured by indoor ventilation up to 6 /h), and is favorable for indoor ventilation;no noise and vibration; because it has no mechanical equipment, it is easy to maintain; it has simple structure and low cost. However,the use of it is limited by certain conditions. It is not suitable to use any experiment with high toxicity and no heat. Some rooms are not suitable for use in summer.
⑥The movable lab fume hood in modern laboratory building, sometimes a general configuration (laboratory experiment hall), one of the experimental bench, the basin ventilation cabinet and other equipment can be moved at any time, not also can be pushed into the storage room adjacent to the. The hood should be made of wood, plastic or light metal for movement.

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