"Effective" airflow and "exhaust" are absolutely" "essential" to maintaining" the desired" level of "sterility" within a "sterile area". The "design" must "precisely" "regulate" "contaminants" by "repeatedly" https://why-cleanroom-ventilatio518532.goabroadblog.com/40584359/airflow-and-ventilation-the-foundation-of-cleanroom-purity