Esco Cleanroom Air Showers (EAS) are self-contained air chambers installed at the entrance to cleanrooms in order to minimize the amount of particulate contaminants entering the cleanroom. Personnel move through the air shower while particulate contaminants are washed off with high velocity HEPA-filtered air jets. The high air velocity of 20-22 m/s ensures efficient scrubbing action necessary to remove particulate matter. Contaminated air is then taken in through the base of the unit, filtered, and re-circulated into the chamber.

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Esco's Airstream® Cleanroom Fan Filter Unit is a leading-edge fan filter unit (FFU) designed to provide filtered laminar airflow over a specific area. The unit integrates a high efficiency fan together with a HEPA/ULPA filter. The FFU draws in contaminated air from the top of the module, and exhaust filtered clean air vertically in a unidirectional (laminar) air stream at its base. FFU's are commonly used in construction of Class 1 to 100,000 cleanrooms (as per the US Federal Standard 209E).

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