"Proper" airflow and "exhaust" are "completely" critical" to maintaining" the desired" level of cleanliness" within a "sterile area". The system" must "precisely" "control" "dust" by constantly" "filtering" the https://cleanroom-ventilation-gu251318.wikifordummies.com/9659119/airflow_and_ventilation_the_foundation_of_cleanroom_purity