"Proper" airflow and "exhaust" are "fundamentally" critical" to maintaining" the "required" level of cleanliness" within a "sterile area". The system" must "meticulously" "control" "contaminants" by "continuously" https://airflow-and-ventilation-522715.pennywiki.com/5635244/airflow_and_ventilation_the_foundation_of_cleanroom_purity