A Class II, Type B2 Biological Safety Cabinet (BSC) is a primary containment device used in laboratories to protect personnel, the environment, and the product from exposure to biohazards and contaminants. These cabinets are designed for work with Risk Group 2 and 3 pathogens, including volatile toxic chemicals and radionuclides, as they exhaust 100% of the air to the outside without recirculation. They provide HEPA-filtered vertical laminar airflow over the work surface for product protection and a strong inward airflow at the front opening for user protection. B2 cabinets are critical for safely handling infectious agents, cell cultures, and other hazardous biological materials, especially in toxicology laboratories and applications where chemical effluent is present and clean air is essential.