"Adequate" airflow and "aeration" are "fundamentally" "essential" to "ensuring" the desired" level of "purity" within a cleanroom". The "configuration" must "precisely" "regulate" "dust" by "repeatedly" "exchanging" https://theroleofairflowincleanr829263.tdlwiki.com/2432331/airflow_and_ventilation_the_foundation_of_cleanroom_purity