Class 2 Biosafety Cabinets are designed to provide protection to the operator, the environment and materials inside the workspace. These Biosafety Cabinets are utilized to contain low-to-moderate risk biohazardous materials. These Biosafety Cabinets have downward airflow and HEPA filters that re-circulate air, providing the required level of protection from microorganisms and aerosols... https://www.bionicsscientific.com/cleanroom-equipment/biosafety-cabinet-class-2.php