Cleatech offer wide range of laboratory fume hoods, exhaust hoods, chemical hoods, ducted and ductless fume hoods in bench-top, mobile and free-standing style.
Laboratory Fume Hood is a ventilated enclosure that limit exposure of laboratory technician to hazardous or toxic fumes or vapors.
A lab fume hood provides lab worker safety by drawing air away from the operator into the fume hood. In general, any work involving hazardous materials that are toxic, volatile or harmful should be performed within a fume hood. Also, a lab fume hood can reduce or eliminate exposure to volatile liquids, powders, dusts, and mists.
Ducted hoods are ventilated enclosures that have ducting to connect to the outside so contaminants are pulled out of the building. Although this type of hood is not portable but it's considered the safest system for the worker and the easiest to maintain for the employer. Common ducted hood usually consists of a base, a work surface, the hood itself, a blower, and the ducting necessary to get the air outside.
Ductless Fume Hood:
A ductless fume hood uses filters (Carbon and /or HEPA) to remove particulates, such as drug powder, dust, toxic metals, vapors, such as toxic gases, acids, or odors and unsafe concentrations of organic solvents from the work area. The filtered air is then returned into the work environment.
The advantages of ductless systems are that they are mobile and do not require expensive installation or duct work. They can be placed at an existing work table or on a transport cart. Another advantage of ductless hood is they do not need make-up air that is required for regular ducted hoods.
Compare to ducted hoods, they are not appropriate for unknown chemicals, or application that produces high volume of chemicals (e.g. More than 500mls per chemical). Some research labs and universities do not permit using ductless hood due to the higher risk involved. Another disadvantage of ductless hood is hassle of filter replacement and the cost associated with that.
Fume Hood Products:
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