Do biological safety cabinets (BSC) at MIT have to be vented to the outside?
It is the policy of the MIT Committee on the Assessment of Biohazards (CAB) that all BSCs are vented to the outside to provide a margin of safety in case of a HEPA filter failure. BSC vented to the outside prevent air from re-entering the laboratory and provide some control of chemical vapors that may be generated by some research.