The Class II Type B2 Biosafety Cabinet has no recirculation of air into the cabinet. It is a total exhaust, non-recirculating, vertical laminar flow biological safety fume hood. Germfree’s Class II, Type B2 Cabinets augment the level of protection delivered by a conventional fume hood and a Class II, Type A Biosafety Cabinet by venting 100% of the air entering the hood to the outside. This total exhaust feature makes the B2 Biosafety Cabinet suitable not only for controlling particulates, but also for containment and filtration of fumes and gases.
Class II, Type B2 BSCs are especially appropriate for work with radionuclides, effluents from subliming particulates, and noxious odors. The Class II Type B2 Biosafety Cabinet was patented by Germfree to provide personnel and environmental protection from diverse types of biohazardous materials as well as from the gases and fumes that are a common byproduct of biological work.