"Proper" airflow and ventilation" are "fundamentally" critical" to "ensuring" the "required" level of "sterility" within a "sterile area". The "configuration" must carefully" "control" "contaminants" by "continuously" https://unidirectional-airflow-c322076.wikinarration.com/7788609/airflow_and_ventilation_the_foundation_of_cleanroom_purity