Across the country, laboratories are equipped with fume hoods and storage cabinets, and there are more and more universal hoods. Grid gas, how to apply and use it, has become a key product, time and time again. Then we will look at some common equipment that is equipped and used. Traditional laboratory fume hoods are fixed through outdoor or upstairs pipes and must have good ventilation and air filling systems to make the fume hood work properly.
        The fan needs to run, so it requires a large power loss, because there are pipes in the middle for heating, ventilation and air conditioning knowledge reference. In addition, the wind system uses the wind system to promote pressure balance and another part of the energy loss.
        But the external row also has its advantages. It is able to operate internally, regardless of volatility, and is suitable for any type of operation.
      ductless clean air fume hood does not need to enter the wind and air system, it circulates internally and saves energy. According to calculations, the cost of consumables is far less than that of traditional fume hoods, and the electricity energy is less than 30%.
        But its disadvantage is the relevant requirements of the test. The volatile amount is too large or the molecular weight is too small, which is not suitable for the laboratory. Therefore, for fume hoods in new laboratories, we recommend that the two be organically combined, and five fume hoods can be used to build a traditional fume hood outside.
        The other four are replaced by clean air type ventilation hoods. These two are organically combined, and the clean air holder can be fully used without any problems.