![]() These units force high-efficiency, particulate-free air (HEPA) over or across the work surface, in a laminar flow fashion. Process protection describes hoods, workstations, and enclosures that protect samples from cross-contamination. AirClean Systems' laminar flow hoods are categorized under our process protection line. A laminar flow hood is for working with substances that are not hazardous to the health of personnel. What is a laminar flow hood?Ī laminar flow hood is defined as an enclosed workbench used to create a contamination-free work environment through installed HEPA filters that capture all the particles entering the cabinet. While this airflow would constitute laminar flow, this is not a traditional laminar flow hood as defined by various standards bodies. Buildup air can be a fire hazard or dangerous to the end-user. The laminar flow action prevents the buildup of potentially hazardous or contaminated air in the fume hood chamber. This process eliminates dead zones or eddy currents. The AirZone baffling draws laboratory air into the front of the hood, creating an even laminar flow pattern, to the rear. The Fume Hoods are specifically designed to eliminate dead spots and maintain turbulence-free air throughout the unit. The engineered design of a fume hood should avoid any dead zones within the enclosure, and pull harmful fumes away from the end-user.ĪirClean ® Systems Ductless Fume Hoods employ AirZone ™ Internal Baffling. These hoods pull air through the front sash and use a pressurized baffle system to provide laminar airflow dynamics. It can also be hazardous fumes or vapors in the case of ductless or total exhaust fume hoods. This can be, for example, biological samples in the case of the biological safety workstation. Operator protection fume hoods and laminar flow hoods classify as units designed to protect the end-user. At AirClean Systems, we try to break down the categories of laminar flow hoods: Operator Protection or Process Protection, depending on the customer and application requirements. The fume hood has a range of performance criteria depending on the application or experiment conducted inside the hood. 1450, a laboratory fume hood is an enclosure with five sides and an adjustable sixth side for operator interaction. Specifically, a fume hood is a PEC designed to capture and contain chemical fumes and vapors. PEC's are enclosures that manipulate air in a laminar flow manner to serve a purpose within your lab. A dead-spot, or area within the engineering control that does not exhibit either positive or negative airflow, can lead to loss of containment or reduced cleanliness. Looking at the differences between the variety of primary engineering controls on the market, we can begin to see why dead spots can be a problem. The laminar airflow prevents dead spots or areas with eddy currents, spaces where the air travels in a circular motion without exiting the unit. PEC's aim to provide laminar airflow dynamics. Primary engineering controls (PEC's), like horizontal laminar flow, clean benches, fume hoods, and biological safety cabinets.
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