"Adequate" airflow and "exhaust" are "completely" "essential" to "preserving" the "required" level of "purity" within a "sterile area". The "configuration" must "meticulously" "regulate" "dust" by constantly" https://unidirectional-airflow-c084942.bmswiki.com/6189132/airflow_and_ventilation_the_foundation_of_cleanroom_purity