What is the difference between biosafety cabinet, ventilation cabinet and super clean workbench?

[technical articles of pharmaceutical Station] drugs are special commodities, which affect people's health In the process of pharmaceutical production, pharmaceutical enterprises need to prevent particle and microbe pollution and cross pollution in the air Among them, biosafety cabinet, ventilation cabinet, ultra clean workbench are all equipment produced to meet the high cleanliness production environment, and their stable operation is an important guarantee for pharmaceutical enterprises to clean production So, what's the difference between the three? Biosafety cabinet the biosafety cabinet is designed to protect workers, laboratory environment and experimental products from exposure to infectious aerosols and splashes that may be generated in the above operation process when operating infectious experimental materials such as primary culture, bacterial strains and diagnostic specimens It is pointed out that biosafety cabinet can effectively reduce laboratory infection and cross contamination of culture caused by aerosol exposure, and can also protect the working environment Fume hood fume hood is designed to remove corrosive chemical gases and toxic fumes during chemical experiments As there is no HEPA filter, the fume hood can not effectively remove the microbial media Microbial samples placed in the fume hood will be spread outside the fume hood, polluting the laboratory environment
According to the industry, the main function of the fume hood is the exhaust function In the chemical laboratory, a variety of harmful gases, odors, humidity and flammable and corrosive substances are produced during the experimental operation In order to protect the safety of users and prevent the diffusion of the pollutants in the experiment to the laboratory, fume hood should be used near the pollution source In the past, the number of fume hoods used was relatively small, only in the chemical laboratory Especially harmful and dangerous gas and produce a lot of heat in the experiment Ultra clean bench ultra clean bench is a local purification unit for sterile and dust-free clean environment in the fields of medicine and health, bioengineering, scientific experiments, etc The air is pressed into the static pressure box through the primary air filter and low-noise centrifugal fan at the back of the roof, and evenly blown out at the upper side through the air filter, forming a horizontal and vertical air curtain with high cleanliness, removing the original natural air in the working area, and achieving the desired high cleanliness space five minutes after starting the machine The adjustable fan is used to adjust the air volume without pole, and the voltage knob is adjusted by touching the switch, so as to ensure that the air speed in the working area is always in an ideal state In short, the super clean bench is designed to protect the test article or product, and prevent the test article or product from being polluted by dust or bacteria outside the working area by blowing the vertical or horizontal laminar air of the working area Once the microbial sample is placed in the working area, the laminar air will blow the air with microbial medium to the front desk staff, which will cause danger The difference between the three Specifically, the fume hood and the super clean bench are different from the biosafety cabinet and cannot be used in the experiment or production process involving microbial materials Among them, the fume hood is only responsible for the auxiliary function of the experimental platform, and the super clean working platform is only used for the local purification of the environment In the process of experiment or production, the biosafety cabinet can artificially control the emission of polluted air in the operation area through a special filter channel It is a kind of special equipment for safe microorganism experiment and production It is widely used in biological laboratory, medical and health, biopharmaceutical and other related industries, and has good effects on improving process conditions, protecting the health and environment of operators.