"Effective" airflow and "aeration" are "completely" "essential" to maintaining" the "required" level of cleanliness" within a "sterile area". The system" must "precisely" manage" particles" by constantly" "filtering" https://theroleofairflowincleanr423401.wikitelevisions.com/9735802/airflow_and_ventilation_the_foundation_of_cleanroom_purity