Ductless Fume Hoods, also known as Ductless Containment Hoods, are self-contained workstations that help to protect the operator's breathing zone from harmful airborne fumes and particulate. 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.
Ductless fume hoods are equipped with a powerful fan that pulls the air in through the hood's inlet and into the filtration system. This system is designed to keep harmful airborne contaminants away from the operator's respiratory zone while they work within the hood. Various filter media is used depending on the chemical vapors/and or particulate that are generated (such as HEPA filters, Activated Carbon, or specialty-blended media like ammonia, mercury, acid gas, and aldehyde). Because the air is recirculated, no exterior-ducting or loss of heat and air conditioning is necessary.