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Different vav hoods change the exhaust volume using different methods such as a damper or valve in the exhaust duct that opens and closes based on sash position or a blower that changes speed to meet air volume demands. Chemical fume hoods when used properly are one of the most reliable engineering controls in the laboratory. Cleatech s high clearance construction laboratory fume hoods often referred ducted exhaust hoods or chemical fume hoods available from 18 to 72 width including spill chemical tray polypropylene worksurface ideal for applications require exterior ducting for exhaust and need full visibility of the fume hood interior.
These air cleaning systems capture and remove smoke dust mist and fumes before they enter the work area then recirculate clean air back into.
Fume extractors typically have extractor arms that can be easily positioned to remove fumes or airborne particulates. This document was prepared by environmental health safety and reviewed by. Ducted fume hoods remove chemical fumes to help eliminate the risk of exposure. Different vav hoods change the exhaust volume using different methods such as a damper or valve in the exhaust duct that opens and closes based on sash position or a blower that changes speed to meet air volume demands.