"Proper" airflow and "aeration" are "completely" "vital" to "preserving" the "specified" level of "sterility" within a "controlled environment". The system" must carefully" "control" "contaminants" by "repeatedly" https://cleanroomventilationguid379849.luwebs.com/42815733/airflow-and-ventilation-the-foundation-of-cleanroom-purity