"Adequate" airflow and "exhaust" are "completely" "vital" to "preserving" the "required" level of cleanliness" within a cleanroom". The "design" must "meticulously" "regulate" particles" by "continuously" "exchanging" https://airflow-and-ventilation-234994.wikijournalist.com/445599/airflow_and_ventilation_the_foundation_of_cleanroom_purity