"Adequate" airflow and "exhaust" are absolutely" critical" to "ensuring" the "required" level of "purity" within a "controlled environment". The "configuration" must "precisely" manage" "contaminants" by "repeatedly" https://nonunidirectionalairflow904253.lotrlegendswiki.com/2431088/airflow_and_ventilation_the_foundation_of_cleanroom_purity