"Effective" airflow and ventilation" are absolutely" critical" to maintaining" the desired" level of "purity" within a "sterile area". The "design" must carefully" "regulate" "dust" by "repeatedly" "exchanging" the https://theroleofairflowincleanr619161.wikienlightenment.com/8677188/airflow_and_ventilation_the_foundation_of_cleanroom_purity