"Adequate" airflow and "exhaust" are absolutely" "essential" to "preserving" the "required" level of "purity" within a "controlled environment". The "design" must carefully" manage" "contaminants" by constantly" https://theroleofairflowincleanr489556.targetblogs.com/42172966/airflow-and-ventilation-the-foundation-of-cleanroom-purity