“Biosafety Cabinet”

Biosafety Cabinet Class II A2 vs B2 Airflow, Containment, and Ducting Requirements

A Class II A2 biosafety cabinet typically recirculates about 70% of HEPA-filtered air and exhausts about 30% back to the room or through an optional canopy, whereas a Class II B2 cabinet exhausts 100% of its air through a dedicated building system. A2 is the usual choice for microbiological work ...