"Adequate" airflow and "aeration" are "fundamentally" "essential" to "preserving" the "specified" level of "sterility" within a "controlled environment". The "design" must carefully" manage" particles" by "repeatedly" https://the-role-of-airflow-in-c054291.homewikia.com/12387068/airflow_and_ventilation_the_foundation_of_cleanroom_purity