"Effective" airflow and "exhaust" are "completely" "vital" to "preserving" the "required" level of "sterility" within a "sterile area". The system" must "precisely" "control" "contaminants" by "continuously" replacing" https://unidirectional-airflow-c192257.wikigdia.com/8025560/airflow_and_ventilation_the_foundation_of_cleanroom_purity