APPLICATIONS HWS (Horizontal-flow) & VWS (Vertical- flow) Series cabinets are designed to provide a high degree of protection for process products and apparatus in laboratory and production facilities. Many critical applications in the medical, pharmaceutical, scientific and electronics fields demand an ultra-clean work environment that is free from biological and particulate contamination. Typical applications include: • Aseptic dispensing, • Assembly of electronics and optics components, • Cell culturing, • Media pouring, • Preparation of medical devices and • Sterility testing. HWS & VWS Series cabinets are intended for work with non-hazardous materials in such applications. DESCRIPTION HWS & VWS Series cabinets are self-contained Class 3.5 horizontal (HWS) or vertical (VWS) laminar flow work stations designed for installation on standard laboratory benches, or on optional floor stands. Cabinets are available with nominal work zone width of 900mm 1200mm or 1800mm. Each cabinet is factory-tested and built to comply with the AES Environmental quality management system. These units can be certified on-site by a NATA-Accredited laboratory to establish compliance with the performance requirements of AS2252.6 - 2011.
HWS & VWS cabinets contain pre-filters and HEPA/Absolute filters, the design of the filtration system enables removal of airborne contamination from air passed through to the work area. The large filter face is matched to a plenum design that ensures a smooth laminar (unidirectional) flow of clean air through the work area and prevents entrainment of outside air. In HWS cabinets, air is passed through the work zone in a smooth, horizontal direction, the blower fan and mounting position are designed to maximize airflow. The deeper rear plenum ensures unobstructed airflow to the HEPA filter face. As a result, the cabinet is quieter with reduced vibration and longer service life for the HEPA filter. In VWS cabinets, a portion of the laminar flow air recirculates to the top plenum to give better airflow control and minimise turbulence in the work area. This also increases the HEPA filter service life. An optional application of sound-deadening coatings in the upper plenum areas of both cabinet styles minimises noise and vibration, this option is particularly useful if work is conducted in ultra-quiet environments.
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