"Adequate" airflow and "aeration" are "fundamentally" critical" to "preserving" the "specified" level of "purity" within a cleanroom". The "configuration" must "meticulously" "control" particles" by "repeatedly" https://unidirectional-airflow-c778269.bmswiki.com/6185828/airflow_and_ventilation_the_foundation_of_cleanroom_purity