"Effective" airflow and "aeration" are absolutely" "vital" to maintaining" the desired" level of "purity" within a "controlled environment". The "design" must "meticulously" manage" "contaminants" by "repeatedly" https://airflow-and-ventilation-956926.mysticwiki.com/2400021/airflow_and_ventilation_the_foundation_of_cleanroom_purity