The equipment incorporates HEPA filters of minimum efficiency 99.997% down to 0.3 micron with backup filters. In principally these cabinets are under negative pressure with respect to labs. The blower draws air from the lab area through the opening provided below the operators arm rest panel which is slightly above the work table surface through HEPA filters and 30% of air is exhausted out from the cabinet to the lab area or outside depending on the contamination level. Due to this principle the cabinet will be always under negative pressure. This ensures required to operator. The 30% air exhaust will be let into the lab in BSL 1 system, exhausted to outside ambient in BSL 2 system, exhausted through burnout chamber in BSL 3 systems and in BSL 4 systems it is 100% exhaust through burnout chamber. All cabinets are GI powder coated & SS sheet combination & alternatively all SS construction. The front shutter is of sliding type with polycarbonate panel ensures easy & smooth movement by counter weight. Accessories like UV light, white light, gas cock, door buzzer are provided as standard features. Two pressure gauges will be provided to monitor cabinet negative pressure & HEPA filter pressure. Permanently lubricated, direct drive centrifugal blowers having extremely low noise & vibration level. All components are designed for maximum chemical resistance, longer & safer life, durable & clean room compatible. The following are the standard manufacturing sizes. 3 ft. x 2 ft. 4 ft. x 2 ft. 6 ft. x 2 ft

The equipment incorporates HEPA filters of minimum efficiency 99.997% down to 0.3 micron with backup filters. In principally these cabinets are under negative pressure with respect to labs. The blower draws air from the lab area through the opening provided below the operators arm rest panel which is slightly above the work table surface through HEPA filters and 30% of air is exhausted out from the cabinet to the lab area or outside depending on the contamination level. Due to this principle the cabinet will be always under negative pressure. This ensures required to operator. The 30% air exhaust will be let into the lab in BSL 1 system, exhausted to outside ambient in BSL 2 system, exhausted through burnout chamber in BSL 3 systems and in BSL 4 systems it is 100% exhaust through burnout chamber. All cabinets are GI powder coated & SS sheet combination & alternatively all SS construction. The front shutter is of sliding type with polycarbonate panel ensures easy & smooth movement by counter weight. Accessories like UV light, white light, gas cock, door buzzer are provided as standard features. Two pressure gauges will be provided to monitor cabinet negative pressure & HEPA filter pressure. Permanently lubricated, direct drive centrifugal blowers having extremely low noise & vibration level. All components are designed for maximum chemical resistance, longer & safer life, durable & clean room compatible. The following are the standard manufacturing sizes. 3 ft. x 2 ft. 4 ft. x 2 ft. 6 ft. x 2 ft