"Effective" airflow and "exhaust" are "completely" "vital" to maintaining" the desired" level of "purity" within a "sterile area". The system" must "precisely" manage" "dust" by "repeatedly" replacing" the air" and https://why-cleanroom-ventilatio903666.wikikali.com/2272894/airflow_and_ventilation_the_foundation_of_cleanroom_purity