"Proper" airflow and "exhaust" are "completely" "essential" to "ensuring" the "required" level of "purity" within a "controlled environment". The "design" must carefully" manage" "dust" by "repeatedly" replacing" the https://the-role-of-airflow-in-c446415.robhasawiki.com/12271040/airflow_and_ventilation_the_foundation_of_cleanroom_purity