"Effective" airflow and "aeration" are absolutely" critical" to maintaining" the "required" level of "purity" within a "sterile area". The "design" must "precisely" "regulate" "contaminants" by "repeatedly" https://the-role-of-airflow-in-c185459.p2blogs.com/40201786/airflow-and-ventilation-the-foundation-of-cleanroom-purity