"Adequate" airflow and "exhaust" are "completely" critical" to maintaining" the desired" level of "sterility" within a "sterile area". The system" must "meticulously" "control" "contaminants" by "repeatedly" replacing" https://cleanroom-ventilation-gu113769.pennywiki.com/5631914/airflow_and_ventilation_the_foundation_of_cleanroom_purity