Biological Safety Cabinets Types

The purifier axiom class ii type c1 is the first biological safety cabinet that can be used in a recirculating type a mode for standard microbiological work or can be connected to an exhaust system to function in type b mode for handling hazardous chemical vapors or radionuclides.

Biological safety cabinets types.

The main differences between the types are the ratio of air exhausted from the bsc to the air that is recirculated within the bsc and the type of exhaust system present. Type b2 cabinets must be hard connected to an exhaust system. A biosafety cabinet bsc also called a biological safety cabinet or microbiological safety cabinet is an enclosed ventilated laboratory workspace for safely working with materials contaminated with or potentially contaminated with pathogens requiring a defined biosafety level several different types of bsc exist differentiated by the degree of biocontainment required. Biological safety cabinets bscs are the primary means of containment for working safely with biohazardous material.

There are four types a1 a2 b1 and b2 of class ii bscs. Type b1 and b2 cabinets are also typically used for biosafety levels 1 through 3. The labgard es energy saver air limited model nu 545 biological safety cabinet bsc is a primary engineering control in obtaining the optimum product quality while reducing the potential for exposure of both product and personnel to airborne biological or particulate chemical agents in low to moderate risk hazard research and drug preparation or product operations as prescribed by the. About 90 of all biosafety cabinets installed are type a2 cabinets.

The type b2 total exhaust. The axiom is an r d 100 awards for innovation finalist. There is a limited need for class ii type b. Type c1 cabinets are unique in that they can operate as either a type a cabinet when in recirculating mode or a type b cabinet when exhausting.

2000 biotechnology performance criteria for microbiological safety cabinets2 which originated in europe. Class iii biological safety cabinets are gas tight designed for use with high risk biological agents. A1 a2 b1 b2. Nsf currently recognizes four types of class ii bscs.

C1 cabinets can be quickly changed from one mode to the other by connecting or disconnecting the exhaust and having the cabinet recertified. Bscs are available that either exhaust to the outside or recirculate hepa filtered air to the laboratory types of biological safety cabinetstwo classes of bscs are described in this section class i and class ii. This is the class ii bsc as specified in the european standard en 12469 and the class ii type a2 bsc as specified in nsf ansi 49 yy 0569 and other standards. As with type a2 cabinets type b1 cabinets can be used for work generating chemical vapors as long as the vapors do not interfere with the work when recirculated or when the work is done in the directly exhausted portion of the cabinet.

Class iii cabinets provide the highest level of personnel product and environmental protection. Another class is planned to be added in 2017. Over ninety percent of biosafety cabinets worldwide are class ii biosafety cabinets of the type a2 variety. Biological safety cabinets enclosures.