The basic elements of our Clean Air System are Pre-filter, Heavy Duty Blower Assembly, HEPA (High Efficiency Particular Air) Filter (Absolute Filter) and the work area. The "CLEANAIR" Laminar Flow Benches which are indispensible in all precision work laboratories utilises the proven Laminar Air Flow principles of the air cleanliness as per the latest International organisation for Standardization (ISO-14644-1) Class ISO-5, almost identical to U.S. Fedral Standard 209E (Class