Biosafety cabinets are classified into two main categories based on their design, functionality, and level of containment.
Class II: Offers personnel, environmental, and product protection. It has different types (Type A1, A2, B1, B2) with varying airflow patterns and exhaust systems.
Class III: Provides the highest level of containment. Operators work through glove ports in a sealed enclosure, and all exhaust air is filtered through high-efficiency particulate air (HEPA) filters.