"Proper" airflow and "exhaust" are "completely" "essential" to "preserving" the "specified" level of "sterility" within a "controlled environment". The "configuration" must carefully" "control" "dust" by "continuously" https://cleanroomventilationguid848539.bcbloggers.com/40619447/airflow-and-ventilation-the-foundation-of-cleanroom-purity