"Adequate" airflow and ventilation" are absolutely" critical" to "ensuring" the "specified" level of "sterility" within a "controlled environment". The "design" must "precisely" manage" "dust" by "repeatedly" https://the-role-of-airflow-in-c303713.nico-wiki.com/2477423/airflow_and_ventilation_the_foundation_of_cleanroom_purity