"Proper" airflow and "exhaust" are "completely" "essential" to maintaining" the "required" level of cleanliness" within a "sterile area". The system" must carefully" "control" "dust" by "repeatedly" "filtering" the https://airflow-and-ventilation-126242.westexwiki.com/2402686/airflow_and_ventilation_the_foundation_of_cleanroom_purity