一个健康、的工作环境，对提高工作效率是关重要的。尤其是在实验室，由于各种化学物质的使用，常常造成实验室的空气污染。有些物质不但难闻，甚有害健康。自然，如何选择一个适当的通风设备成了各个实验室不可忽略的话题。实验室如何选择通风管道和通风柜呢？通风管道厂家为您讲解：
A healthy and safe work environment is crucial for improving work efficiency. Especially in laboratories, the use of various chemical substances often causes air pollution. Some substances not only smell bad, but are even harmful to health. Naturally, how to choose an appropriate ventilation device has become a topic that cannot be ignored in various laboratories. How to select ventilation ducts and Fume hood in laboratory? The ventilation duct manufacturer will explain to you:
造成实验室空气污染的主要原因就是在各种实验中散发的气体、烟雾和灰尘颗粒物。在英国，化学和有害物质的使用，被置于“有害物质使用管理规定”（C。O。S。H。H）的管理之下，COSHH规定，在实验室，任何可能造成空气污染的物质的使用都要在实验室通风柜内进行。有一台好的通风柜，必能达到事半功倍的效果。那么如何才能选择到一台好的通风柜呢？通风柜的好坏单从表面是看不出来的，须从它的内部进行解析：
The main cause of laboratory air pollution is the emission of gases, smoke, and dust particles in various experiments. In the UK, the use of chemicals and hazardous substances is under the management of the "Management Regulations on the Use of Hazardous Substances" (C. O. S. H. H). COSHH stipulates that any substance that may cause air pollution in the laboratory must be used in the laboratory Fume hood. With a good Fume hood, you can get twice the result with half the effort. So how can we choose a good Fume hood? The quality list of Fume hood cannot be seen from the surface, but must be analyzed from its interior:
1、保证通风柜内的气体、烟雾和灰尘颗粒特不泄露于室内空气中。
1. Ensure that the gas, smoke and dust particles in the Fume hood will not leak into the indoor air.
2、可燃气体在通风柜内不聚集。
2. Combustible gas will not gather in the Fume hood.
3、保证实验室工作人员在通风橱前工作时，不受有害物质的侵害，万一玻璃门破裂时不被碎玻璃划伤。
3. Ensure that laboratory staff are not harmed by harmful substances when working in front of the fume hood, and avoid being scratched by broken glass in case the glass door breaks.
4、所选通风柜有（）认证，设计符合人体工程学原理。
4. The selected Fume hood has international (national) safety certification, and its design conforms to ergonomic principles.
5、通风柜导流板设计是非常重要的，好的导流板设计能使空气排放流畅，避免烟气积存。对于一般性的实验，通风柜表面网速不少于0。5m/s，而进行一些散发灰尘颗粒物的操作，表面网速则达到0。75m/s。
5. The design of Fume hood deflector is very important. A good deflector design can make the air discharge smooth and avoid smoke accumulation. For general experiments, the surface network speed of Fume hood shall not be less than 0. 5m/s, while performing some operations that emit dust particles, the surface network speed reaches 0. 75m/s.
6、通风柜的水、电、气路装置均备，设计灵活，以免给用户带来不便和烦恼。
6. The water, electricity and air circuit devices of the Fume hood are all available, and the design is flexible to avoid inconvenience and trouble to users.
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