GEV is inefficient and costly as compared to local exhaust ventilation, and given the lack of established exposure limits for most nanomaterials, they should not be relied upon for controlling exposure, although they can provide negative room pressure to prevent contaminants from exiting the room.
GEV is inefficient and costly as compared to local exhaust ventilation. They should not be relied upon for controlling exposure, although they can provide negative room pressure to prevent contaminants from exiting the room. This was given the lack of established exposure limits for most nanomaterials.