What type of biological safety cabinet is generally used for work involving biosafety level 2 organisms?

Biosafety level 2 (BSL-2) organisms are associated with moderate hazards that can cause disease in humans but are not typically transmitted through the air. Therefore, work with these organisms requires a controlled environment to ensure both personnel safety and environmental protection. A Class II biological safety cabinet is specifically designed for this purpose.

Class II cabinets provide a sterile working environment by using HEPA filters to recirculate air within the cabinet while also providing a downward airflow that creates a barrier between the operator and the sample. This design protects both the user and the specimen from contamination. The Class II cabinet also has a front sash that can be adjusted and offers an airflow system that ensures optimal protection when working with BSL-2 agents.

In contrast, other classes of biological safety cabinets either do not provide the necessary level of biosafety or are designed for higher containment levels than what is typically required for BSL-2 work. This specific design and functional capabilities of Class II make it the most suitable choice for handling BSL-2 organisms.