Metisafe Class II Type A Biological Safety Cabinet

Metisafe^® Class II Type A Biological Safety Cabinets works under principles of air circulation, air filtration and keeping the working area under negative air pressure. In BSC, 70% (+/-%5) of total air is recirculated and filtered through the main HEPA filter located at work zone top. The rest of the air, 30% (+/-%5), is exhausted to the surrounding area environmentally protected after passing through the exhaust HEPA filter. The room air is pulled through the perforations located in front of the work plate and directed to blower plenum (inflow air). This air flow direction prevents reaching dirty air to the materials over the working plate. Inflow air together with recirculated air is mixed at the blower plenum then pass through the main HEPA filter and laminarizator and reaches into the work area protecting the work zone under ISO-5 class laminar airflow. In addition to the primary air barrier accomplished by the negative pressure within the working zone double wall negative plenum design of the Metisafe® cabinet prevents particle escape to surroundings and zero leakage is ensured.