Can A Containment Downflow Booth Meet ISO Conditions?

The purpose behind downflow booth design is to provide operator protection during the handling of potent powders. Clean air from the ceiling plenum is distributed evenly across the whole of the work area pushing any respirable dust generated downward and away from the operator’s breathing zone. As the dust moves down to a low level, the high velocity exhaust grilles direct the dust into the filters. The onboard filtration system, comprising of a minimum of fine dust filters and HEPA filters, removes the dust before returning the clean air into the ceiling plenum. A small amount of air is exhausted after the filters thereby creating a slight negative environment. Inward air movement into the booth at low level ensures containment. That is to say that potent powder cannot escape out of the booth, keeping the facility and operator safe.