"Effective" airflow and "exhaust" are absolutely" "vital" to "ensuring" the "specified" level of "purity" within a "controlled environment". The "design" must "precisely" "regulate" particles" by "repeatedly" https://the-role-of-airflow-in-c658331.ttblogs.com/21806892/airflow-and-ventilation-the-foundation-of-cleanroom-purity