"Adequate" airflow and "exhaust" are "fundamentally" critical" to maintaining" the "specified" level of cleanliness" within a "sterile area". The "design" must "meticulously" "control" "contaminants" by constantly" https://airflowandventilationinc609874.wikiitemization.com/5973556/airflow_and_ventilation_the_foundation_of_cleanroom_purity