General room ventilation does not effectively control personnel exposures to hazardous levels of airborne chemicals. Consequently, laboratory hoods are required to contain chemical vapors and gases at ...

Traditional laboratory chemical (or fume) hoods are designed to capture and control chemical ... and environmental protection is achieved by HEPA filtration of exhaust air. Class II BSCs are by far ...

Laboratory fume hoods are partially enclosed workspaces that are exhausted ... down capabilities to prevent the buildup of explosive perchlorate salts within the exhaust systems. Bypass hoods have an ...