"Proper" airflow and "exhaust" are "fundamentally" "essential" to maintaining" the "specified" level of "purity" within a "sterile area". The system" must "meticulously" "regulate" particles" by "repeatedly" https://unidirectional-airflow-c263828.blazingblog.com/41896157/airflow-and-ventilation-the-foundation-of-cleanroom-purity