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Purair - Model HLF/VLF -Laminar Flow Cabinet
Air Science Purair Vertical Laminar Flow Cabinets are a series of high efficiency products designed to protect equipment and other contents of the work zone from particulates, for applications sensitive to such contamination. It is ideally suited for use with non-hazardous contaminants and when flexible access to the equipment in the work zone is desired. At the heart of the Purair Laminar Flow Cabinet product line is the Air Science Multiplex ULPA Filtration Technology that creates a clean work environment over a wide range of applications.
- Excellent protection of equipment and materials inside the cabinet from particulate contamination.
- Rich set of options to customize cabinets for a multitude of applications.
- Easy to change filters.
- High airflow capacity.
- Purair VLF cabinets provide vertical airflow and are available in 3`, 4` and 6` widths for general applications.
- Purair HLF cabinets provide horizontal airflow and are available in 3`, 4`, 6` and 8` widths in standard and extra tall heights for general applications.
- HLF-72, shown with optional mobile base stand. (above)
- Uses include applications where there is no generation of biohazardous materials and operator protection is not required;
- Mycology and food microbiology
- Plant and mammalian cell culture
- Clinical pharmacy and hospital use
- Clean rooms
- Semiconductor assembly
- Pharmaceutical
- Aerospace
- Medical device assembly
- Research Laboratories
- Room air enters from the top of the cabinet through a disposable pre-filter; this traps larger particles and increases filter life.
- Air is forced evenly across the ULPA filter in a stream of clean, uniform air within the work zone. This dilutes and flushes airborne contaminants from the interior.
- A nominal filter face velocity of 0-45 m/s (90 fpm) ensures a sufficient number of air changes to maintain cleanliness within the work zone.
- The purified air travels down to the work zone in a vertical, unidirectional down flow stream, exiting the work zone across the entire open cabinet front area after deflecting off the work surface. Rear wall perforations are designed to reduce work surface turbulence and minimize the possibility of dead air corners in the work zone.
- Room air enters from the top of the cabinet through a disposable pre-filter; this traps larger particles and increases filter life.
- Air is forced evenly across the ULPA filter in a stream of clean, uniform air within the work zone. This dilutes and flushes airborne contaminants from the interior.
- A nominal filter face velocity of 0-45 m/s (90 fpm) ensures a sufficient number of air changes to maintain cleanliness within the work zone.
- The purified air travels across the work zone in a horizontal, unidirectional stream and exits the work zone across the entire open cabinet front.
Purair Laminar Flow Cabinets maintain a 0.45 m/s or 90 fpm airflow velocity, measured 6"/150mm from the filter with a uniformity of +/- 20% across the filter face. This face velocity is in compliance with USA and international standards for safety and performance. The ULPA filters are easy to replace with common tools.
Air Science laminar flow cabinets incorporate ebmpapst permanently lubricated direct drive centrifugal blowers. The energy efficient design reduces operating costs and has extremely low noise and vibration levels.
A. Cabinet lighting located away from laminar flow area.
B. Optional Ultraviolet lamp to sterilize and decontaminate work zone and cabinet contents between operating periods.
C. Optional Night Door/Cover to protect cabinet interior when blowers are off. Contains UV radiation when UV activated.
D. Disposable polyester fiber pre filter with 85% arrestance.
E. Long-life Camfil-Farr ULPA main filter with efficiency of 99.999% at particle sizes between 0.1 to 0.3μm.
F. Side window that allows ambient illumination into the chamber and provides users with an unobstructed view of its contents from three sides.
G. Pass through port to safely route electrical cords and cables into the cabinet through its side wall.
H. GFCI outlet to power equipment in cabinet.
I. ebmpapst external rotor blower.
J. Control panel On/Off switch for fan, lighting, GFCI outlets, Minihelic ULPA pressure gauge to measure filter performance, UV lamp key switch.
K. Fan speed control.
L. Base Stand: Optional mobile cart with locking casters, includes a convenient lower shelf.
M. Stainless steel Work Surface with ULPA filter spill retention lip on HLF units.
N. Ergonomically angled front improves reach and comfort.
O. MICROgone antimicrobial coating on all painted metal surfaces minimizes contamination - white color.
P. Protected work zone environment created for optimum product performance.
Q. Optional IV Bar with "S" hooks.
R. Optional petcock service fixture (Maximum 4 per unit).

Control panel On/Off switch for fan, lighting, GFCI outlets, Minihelic ULPA pressure gauge to measure filter performance, UV lamp key switch.
