Air filtration in a cleanroom plays a critical role in maintaining the desired level of cleanliness in a cleanroom. Cleanrooms are designed to control the level of airborne particles, including dust, microbes, and other contaminants, to a specific level. To achieve this, the air filtration system in a cleanroom must be capable of removing particles of specific sizes, as defined by the cleanroom classification.

The level of air filtration required for a cleanroom depends on the cleanroom’s classification and the activities taking place within it. Cleanroom air filtration typically involves a combination of pre-filters, high-efficiency particulate air (HEPA) filters, and ultra-low particulate air (ULPA) filters. Pre-filters remove large particles from the incoming air, while HEPA and ULPA filters remove smaller particles, including airborne bacteria and viruses.
In addition to filters, cleanroom air filtration systems may also include air handling units, ductwork, and airflow controls. These components work together to ensure that the air in the cleanroom is constantly recirculated, filtered, and maintained at the desired level of cleanliness. Regular maintenance and testing of the air filtration system are critical to ensure that it is functioning correctly and providing the necessary level of air cleanliness.