"Effective" airflow and "exhaust" are "completely" "essential" to maintaining" the "required" level of "purity" within a cleanroom". The system" must carefully" manage" particles" by "continuously" "filtering" the https://the-role-of-airflow-in-c394735.wikitron.com/2463710/airflow_and_ventilation_the_foundation_of_cleanroom_purity