One, the role of the two are different:
1, the role of ultra-clean bench: through the fan will be sucked into the air pre-filter, through the static pressure box into the high-efficiency filter filtration, the filtered air in a vertical or horizontal airflow state, so that the operating area to achieve the level of cleanliness, to ensure that the production of the environmental requirements of cleanliness.
2, the role of biological safety cabinets: is to prevent the experimental operation of the process of handling certain biological particles containing dangerous or unknown aerosol dispersion of box-type air purification negative pressure safety devices.
Two, the two classifications are different:
1, ultra-clean bench classification: mainly divided into two categories, one is the horizontal laminar flow, the other is vertical laminar flow. According to the operation of the structure is divided into unilateral operation and bilateral operation of two forms, according to its use can be divided into general ultra-clean bench and biological ultra-clean bench.
2, the classification of biological safety cabinets: in accordance with NSF49 standards, biosafety level 1 (P1) media refers to ordinary harmless bacteria, viruses and other micro-organisms; biosafety level 2 (P2) media refers to general pathogenic bacteria, viruses and other micro-organisms; biosafety level 3 (P3) media refers to potent/deadly bacteria, viruses and other micro-organisms, but after infection can be Cure;
Biosafety level 4 (P4) media refers to virulent/deadly bacteria, viruses and other microorganisms, infection is not easy to cure. This standard divides the biosafety cabinet into Ⅰ, Ⅱ, Ⅲ, which can be applied to the operation of different biosafety level media.
Three, the use of the two different:
1, the use of ultra-clean bench: ultra-clean bench is a one-way flow to provide a local dust-free sterile working environment air purification equipment. Applicable to medicine and health, biopharmaceuticals, food, medical science experiments, optics, electronics, aseptic chamber experiments, sterile microbiological testing, plant inoculation and other needs of the local clean and sterile working environment of the scientific research and production departments.
Can also be connected to the assembly line with low noise, mobility and other characteristics. Its use to improve process conditions, improve product quality and increase the yield are good results.
2, the use of biological safety cabinets: widely used in microbiology, biomedicine, genetic engineering, biological products and other fields of scientific research, teaching, clinical testing and production, is the laboratory biological safety in the first level of protection barrier in the most basic safety protection equipment.
Baidu Encyclopedia - Ultra-clean bench
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