Laboratory ventilation is the primary method used to prevent exposure to hazardous substances in laboratories and other work spaces. Depending on the specific needs of the work space, a fume hood, ...

The laboratory chemical fume hood is the most common local exhaust ventilation system used in laboratories and is the primary method used to control inhalation exposures to hazardous substances. When ...

This ventilated enclosure is connected to an exhaust fan which draws air from the room ... The face velocities need to be high enough to contain fumes but not high enough to cause air turbulence ...

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 vapors and pull them ... and environmental protection is achieved by HEPA filtration of exhaust air. Class ...

Laboratory fume hoods are partially enclosed workspaces that are exhausted to the outside ... Perchloric acid hoods have wash-down capabilities to prevent the buildup of explosive perchlorate salts ...