![]() ![]() The borders between each Zone exhibit turbulence due to flowing of air at different speeds. ![]() Each zone, or column, of airflow is defined and has its own range in airspeed. Zoned airflow is used when equipment cannot achieve all of the protection required of a Class II biosafety cabinet with standard laminar airflow. Zoned airflow is a classification used to describe air currents within Class II BSCs that are not truly laminar or uniform. Video demonstration, laminar airflow in action: (Note that some categories of laboratory equipment, like Class I enclosures with perforated baffles or certain high performance fume hoods, employ laminar-like flow Watch: Airflow in a Class I Enclosure.) A UV light is included that can help denature genetic material (DNA, RNA, etc.), providing secondary decontamination.
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