


Type B2 BSCs or Cell Logic Class II, Type B2 Biosafety Cabinets, provide comprehensive personnel, product and environmental protection from hazardous particulates, including agents requiring BSL 1-4 containment.
Sometimes referred to as 100% Exhaust or Total Exhaust BSCs, these biosafety cabinets maintain a minimum average airflow velocity of 100 feet per minute (fpm) through the sash opening and require a dedicated exhaust system and remote blower for each cabinet. Cell Logic Type B2 BSCs are designed to meet the specific needs of cell research. Models feature a modified sash to accommodate a microscope and/or a temperature-controlled work area on the work surface to maintain cell viability.
Type B2 BSCs draw HEPA-filtered downflow air from the laboratory and exhaust all inflow and downflow air into the atmosphere after HEPA filtration. This design makes these cabinets suitable for work involving volatile chemicals as an adjunct to microbiological applications.
Other appropriate applications include work with antineoplastic drugs, genetic material, asbestos and additional substances that generate hazardous airborne particulates. All models are NSF compliant.
These biological safety cabinets are designed to be hard ducted to the outside. During operation, room air is drawn into the top of the cabinet and through a supply HEPA filter. This filtered air flows downward through the work area. Room air is also drawn into the inlet grille located at the work access opening. All of the contaminated air passes through the exhaust HEPA filter. A dedicated exhaust system and remote blower discharge 100% of the filtered exhaust air from the laboratory. Since none of the air is recirculated, these biohazard cabinets may be used for work with agents treated with volatile toxic chemicals and radionuclides.
All Type B2 Biosafety Cabinets rely on external blowers (usually on the roof of a building) to exhaust 100% of the air entering the cabinet. If the building exhaust blower fails or is mistakenly turned OFF, the cabinet will become pressurized, resulting in contaminated air flowing from the work area into the laboratory. Perform a risk assessment regarding the type of work to be performed in the cabinet if there is an unintended loss of exhaust air.