"Adequate" airflow and "aeration" are absolutely" critical" to "preserving" the "specified" level of cleanliness" within a "sterile area". The system" must carefully" manage" particles" by "continuously" "filtering" https://cleanroomventilationguid842944.wonderkingwiki.com/2473297/airflow_and_ventilation_the_foundation_of_cleanroom_purity