"Adequate" airflow and "exhaust" are absolutely" "vital" to "ensuring" the "required" level of "sterility" within a cleanroom". The "design" must "precisely" "regulate" "contaminants" by constantly" replacing" the air" https://unidirectional-airflow-c813480.wikiconversation.com/8202428/airflow_and_ventilation_the_foundation_of_cleanroom_purity