Biological safety cabinet laminar flow

Horizontal laminar flow clean air benches are not BSCs (Section 10.3.4). They discharge HEPA-filtered air across the work surface and toward the user. These devices only provide product protection. They can be used for certain dean activirie.s, such as the dust-free assembly of sterile equipment or electronic devices. These benches should never be used when handling potentially infectious materials. The worker can be exposed to materials on the clean bench. Horizontal clean air benches should never be used as a substitute for, i biological safety cabinet. 

Laminar flow biological safety cabinet, class II. 

Laminar Flow Biological Safety Cabinets, A Training Manual for Biomedical Investigators National Cancer Institute Washington, 1972. 

A unit sometimes confused with a Class I biological safety cabinet is a horizontal laminar flow cabinet or work table. This type of unit serves precisely the opposite function of a class I cabinet. Clean air which has been HEPA filtered is blown across the work surface toward the worker so that the research or product materials are protected against contamination, but the worker is not protected at all. Such a unit is unsuited for microbiological work, except for applications which would cause no harm to the users, such as a work involving noninfectious or non-aUergenic materials. 

McGarrity G.J. and Coriell, L.L., Modified laminar flow biological safety cabinet. Applied Microbiology, 28(4), 647-650, October 1974. 

Effective Use of the Laminar Flow Biological Safety Cabinet, (slide/cassette) NAC no. 00971 and no. 003087, National Audio Visual Center (GSA), Washington, D.C., 1976. 

Class II Biological Safety Cabinets. A Class II biological safety cabinet also has an open front with a 75 ft/ min face velocity. It has vertical laminar flow air movement. The air moves through HEPA filters and gets recirculated within the cabinet. Some air also... 

Controlled environments also regard to aseptic handling in pharmacies, where they are achieved using laminar flow cabinets, biological safety cabinets or isolators (see Sect. 28.4). 

A safety cabinet is a laminar down flow cabinet, which is constructed specifically for protection of both the sterile product and the operator. It is frequently used in (hospital) pharmacies for aseptic preparation (when products are not fully closed) and for aseptic handling of class 4 or 5 substances (see Sects. 26.5.2 and 26.8). Laminar down flow has the advantage compared to cross flow that the operator does not feel the continuous flow in his direction. Other names for a safety cabinet are biosafety cabinet, biosafety bench, biohazard bench, biohazard cabinet, biological safety cabinet etc. 

Vertical Laminar Flow Vertical Flow Biological Clean Bench Safety Cabinet... 

Horizontal laminar flow cabinets used for product protection, for example, in the pharmaceutical industry, exhaust directly into the face of the operator. This equipment must never be used as a biological (microbiological) safety cabinet. 

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