![]() Various filter media is used depending on the chemical vapors/and or particulate that are generated (such as HEPA and ULPA filters, Activated Carbon, or specialty-blended media like ammonia, mercury, acid gas, and aldehyde). This system is designed to keep harmful airborne contaminants away from the operator's respiratory zone while they work within the hood. These containment systems are used for a variety of applications, including chemical fume control, powder & dust removal, solvent vapor control, pharmaceutical powder filling, light grinding, acid gas fumes, anesthesia gas containment, epoxy fume control, and many more applications that produce particulate and fume.ĭuctless Fume Hoods are equipped with a powerful fan that pulls the air in through the hood's inlet and into the filtration system. By concept, the principle functions for both fume hoods are the same airflow is pulled in from the open side of the hood (typically the front), but then differ in concept by the ducted fume hood pushing air out of the building and the ductless fume hood dispersing through a filtration system and recirculating air back into the room.ĭuctless Fume Hoods, also known as Ductless Containment Hoods or Fume Hoods, are self-contained workstations that help to protect the operator's breathing zone from harmful airborne fumes and particulate. Typically, there are two main types of fume hoods that are utilized in majority: ducted and ductless (or, recirculating) fume hoods. Controlled environment for chemical reactions, fires, and spill containment.Protection against the environment by trapping the fumes, toxins and particulates into the filter, and leaving clean air to be released into the immediate area.Protection against the experiment or application by recirculating clean air back into the fume hood and removing the harmful contaminants.Protection for the user/personnel against toxic fumes and particulates. ![]() The principle functions of a fume hood are: ![]() A fume hood, also referred to as an exhaust hood, is essentially a critical piece of equipment enclosing five sides of a work area, and allows for users to work on potentially hazardous materials.
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