"Adequate" airflow and ventilation" are "fundamentally" "essential" to "ensuring" the "specified" level of cleanliness" within a "sterile area". The "design" must "meticulously" "regulate" "dust" by "continuously" https://cleanroom-ventilation-gu480845.wikibestproducts.com/2475816/airflow_and_ventilation_the_foundation_of_cleanroom_purity