"Proper" airflow and "aeration" are absolutely" critical" to "preserving" the "required" level of "purity" within a "controlled environment". The "design" must "meticulously" manage" "dust" by "continuously" https://airflowandventilationinc375800.eveowiki.com/2482211/airflow_and_ventilation_the_foundation_of_cleanroom_purity