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 ...

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 ...

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, ...

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 ...

This ventilated enclosure is connected to an exhaust fan which draws air from the room ... contain fumes but not high enough to cause air turbulence between the hoods face and laboratory workers; an ...