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Bio Safety Cabinet
The new recirculating range of Vertical laminar Flow Cabinets are available in three different modules.
Class I Biological Safety Cabinet:
The Class I Biological Safety Cabinet provides personnel and environmental protection, but no product protection. It is similar in air movement to a chemical fume but usually has a limited fixed work access opening and the exhaust air must be HEPA filtered, to protect the environment. The Class I Biological Safety Cabinet is designed for general microbial research with low-and moderate-risk agents. In addition, the work zone, which type is much smaller than a chemical fume hood, is geared to working with biological whose process/producers dictates the use of moderate amounts of volatile liquids, that are suitable for recirculating cabinets.
Class II Biological Safety Cabinet:
As indicated in the previous section selecting a Class II Biological Safety Cabinet must take into consideration a considerable number of factors which include, among others, the work being done within the cabinet, the facility requirement based on biosafety levels, the location of the cabinet within the laboratory itself, the installation requirements of the cabinet, and the exhaust/supply system(s) to both the laboratory and the cabinet, whether or not the cabinet is to be vented.
Class III Biological Safety Cabinet:
The Class III biological safety cabinet was designed for work with biosafety level 4 microbiological agents, and provides maximum protection to the environment and the worker. It is a gas-light enclosure with a non-opening, completely sealed, viewing window. Access to the interior of the cabinet is through a double-door pass-through “interchange†box (such as an autoclave) that can be decontaminated between uses and/or a dunk tank that is accessible through the cabinet floor into the floor of a Class I or Class II cabinet. Reversing that process allows for safe removal of materials from the Class III biosafety cabinet.
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