Precautions for the purchase of fume hoods in the laboratory:

      It is well known that the test bench is the most used laboratory furniture in our entire laboratory. It is an indispensable workbench in the laboratory, and any experimental project must be completed on this work surface. In addition, all steel fume hoods are also an essential part of laboratory furniture. It plays the role of ventilation and ventilation in the laboratory.

      Generally, the material of the fume hood in the laboratory furniture consists of a variety of materials, all steel, steel wood, all wood, aluminum wood, plastic steel, PVC structure, etc. The table top is directly in contact with the operator, and the solid core physical and chemical board, Stainless steel plate, PVC, ceramic and other materials. Its structure mainly consists of four parts, namely: low cabinet, upper cabinet, countertop and some accessory accessories. Before you buy, you have to consider the four parts, you can choose the fume hood that suits your experiment needs.

      The low cabinet of the fume cabinet: a. Whether the gas, electricity, water, etc. are prepared properly, is not safe. b. If volatile chemicals are used in the experiment, you need to choose the function of pumping; c. The material is not strong, can not be fireproof, can not withstand the erosion of various chemical substances in the laboratory.

      The upper cabinet of the fume hood: There are three common styles in the upper cabinet of the wind cabinet: floor type, low table, standard type. When selecting the upper cabinet, consider: a. See if the epoxy board or the anti-Bet board is selected. Fume hood with lining material; b. Should choose adaptive control system or variable air volume or constant air volume; c. Fume hood opening position is not suitable for laboratory space; d. Wind speed can not meet the requirements.

      All steel ventilation countertops: a. Is there a trough and a trough for the cup b. The air outlet design can not adapt to the environment of the laboratory; c. The special properties of the material of the countertop cannot meet the experimental requirements; d. Is there any Designed to protect the dish from liquid leakage.

      Auxiliary accessories: a. When selecting a steel fume hood, consider the durability, voltage, type and explosion-proof of the electrical equipment; b. Do not need the door, if there is a cabinet door, it will help the hood to be clean. Hygiene, of course, is more beautiful; c. gas is air, oxygen or nitrogen; d. water is pure water, reverse osmosis water or distilled water