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Laboratory fume hood selection and function

Apr 23, 2018

First, the introduction of the fume hood Fume hoods are an essential part of laboratory furniture. Exhaust and ventilation effects in the laboratory. The structure of the fume hood is the upper and lower type, and the top of the fume hood has a vent hole to allow the fan to be installed. There is a deflector in the upper cabinet, the circuit controls the touch switch, the power socket, etc. The perspective window is made of tempered glass and can be moved left and right or up and down. For human operation. The lower cabinet adopts an experimental side table style with a countertop above and a cabinet below. Countertops can be fitted with small cups and faucets. The material of the fume hood consists of a variety of materials, including steel, steel, wood, aluminum wood, plastic steel, PVC structure, etc. The surface of the countertop is in direct contact with the operator. The solid physiochemical board, stainless steel plate, PVC, ceramics And other materials. Second, the choice of fume hoods The fume hood is not a separate device. Changes in the external environment will affect the performance of the fume hood. At the same time, the fume hood and its control system will also affect the environment around him. When you choose the fume hood: First of all: The whole system must be taken into account. According to the material points: All steel fume hoods, steel wood fume hoods, all wood fume hoods, glass steel fume hoods, PP fume hoods. Second: You need to determine which type of fume hood you need. When choosing, you can usually measure it as follows:

   1. The cabinet part: There are three styles: standard style, low table top, floor type. The surface wind speed of the fume hood meets the requirement of the international standard for safe wind speed: 0.5m/s (International standards: only the surface wind speed reaches 0.5m/s can effectively trap harmful gases in the cabinet). The opening height of the fume hood is suitable for your operating space requirements. Ventilation control system: Constant air volume, variable air volume or adaptive control system. Liner material: PP, glass fiber or polyethylene resin and so on. Whether the raw material used to adjust the door is made of safe glued glass, its design meets the human body mechanics, enabling the operator to pull freely. 2. Mesa section: Whether the countertop adopts a safe dish design, which facilitates the user to clean the countertop and prevent leakage of toxic liquids. The material of the countertop meets the needs of your experiment to resist the corresponding erosion and high temperatures. Whether the tank or sink is installed and the installation location is reasonable. The design of the air outlet is reasonable.