"Proper" airflow and "exhaust" are "completely" "vital" to maintaining" the "specified" level of cleanliness" within a cleanroom". The system" must "meticulously" "regulate" particles" by constantly" replacing" the https://unidirectional-airflow-c252834.wikipublicity.com/8836419/airflow_and_ventilation_the_foundation_of_cleanroom_purity