"Adequate" airflow and "exhaust" are "completely" "vital" to "preserving" the "required" level of "sterility" within a cleanroom". The system" must carefully" "regulate" particles" by "repeatedly" "exchanging" the air" https://theroleofairflowincleanr489556.targetblogs.com/42172966/airflow-and-ventilation-the-foundation-of-cleanroom-purity