Please Note: This item is made upon ordering and has a 4-6 week manufacturing lead time.

DWS
Air Science? DWS™ Downflow Workstations are high efficiency ductless fume hoods designed to protect the user and the environment from hazardous vapors generated on the work surface. Unrestricted front and side access facilitates applications requiring complex and intensive operator involvement, while downward airflow in the chamber protects the operator.
The DWS™ Downflow Workstation product line is based on an innovative Air Science? Multiplex™ Filtration Technology that creates a safe work environment over the widest range of applications in the industry.
DUCTLESS TECHNOLOGY:The Eco-friendly Choice
Advanced carbon filtration technology offers a safe, high performance alternative to conventional ducted fume hood products for a broad range of applications.

• Environmental Benefits. Air Science? ductless fume hoods isolate and trap chemical vapors to prevent ecological impact through release into the environment.
• Versatile. Each filtration system is selected for its specific application. The Multiplex™ Filter broadens the range of applications. Carbon filters are available in more than 14 configurations for use with vapors or organic solvents, acids, mercury and formaldehyde. HEPA/ ULPA filters can add to biological safety.
• Easy to Install. The ductless fume hood is self-contained and does not require venting to the outside. Many units are portable and may be moved from one location to the next with minimal downtime and without filter changes. Set-up, operation and filter maintenance are straightforward.
• Energy Efficient. Because filtered air is returned to the room, no demands are required of the facility HVAC capacity for make-up air.
• Cost Effective. Facility duct work, HVAC and construction costs are eliminated.
• Safe to Use. Workstation airflow and face velocity protect users from incidental exposures to fumes.
• Self testing. Electronic airflow monitoring assures continuous safety. An optional electronic gas sensor monitors carbon filter performance.

PRODUCT FEATURES:
A. Filter I.D. Window: A strategically placed front cover window shows the installed filter part number and installation date for convenience and to encourage timely filter replacement.
B. Control Panel: Electronic controls and displays include switches for the blower, low airflow alarm and electronic hour counter.
C. Steel Support Frame: The chemical resistant epoxy coated steel frame adds mechanical strength. Optional all polypropylene construction is available if desired; see accessories.
D. Electrostatic Pre-Filter: The 99.5% effective electrostatic pre-filter can be changed from below the work surface while unit is operating, to prevent user exposure to chemical vapors and powders trapped in the filter.
E. Color: The cabinet is white with blue trim; optional side panels and front sash are clear. (Black color also available, see Options and Accessories.)
F. Airflow Alarm: A continuous air velocity monitoring system alerts the operator upon unacceptable values.
G. Manual Speed Controller: The operator may set the centrifugal fan motor speed as desired.
H. Stand: Optional mobile cart with locking casters.
I. Work Surface: Under the perforated stainless steel internal work surface is a polypropylene tray to retain any spillage.
J. Filter Door Key: Filter access keys prevent unauthorized removal or accidental exposure to dirty filters.
K. Integral Lighting: A vapor proof fluorescent lamp illuminates the interior of the workstation.
OTHER FEATURES:
Side Panels and Front Sash: (Optional) When installed, optional side panels and optional front sash provide better containment of hazardous vapors. The Front Sash is easy to open and close.
270 Degree Visibility: Unrestricted user access to the front and sides of the workstation also admits ambient illumination and provides an unobstructed view of its contents.
Standards Compliant: Performance specifications and construction meet or exceed OSHA, ANSI and relevant international standards to assure operator safety.
Construction: All models are available in either metal or polypropylene construction. See selection chart for specifications and dimensions. Specify metal or polypropylene when ordering. Available in 110V, 60Hz or 220V, 50Hz models.
DWS™ DOWNFLOW WORKSTATION AIRFLOW PATTERN
DWS36, shown, right, with Multiplex™ Filtration System.
DWS™ Downflow Workstations maintain a constant face velocity of 80FPM at the work surface in compliance with USA and international standards for safety and performance. Contaminated air is pulled through the Multiplex filtration system where activated carbon adsorbs chemical vapors and/or particulates if HEPA/ULPA filters are used. Clean air is returned to the room.
A. The main filter is easy to replace, no tools required. The filter clamps tightly against the filter gasket to prevent filter bypass and maintain filter integrity.
DWS™ DOWNFLOW WORKSTATION FEATURES & BENEFITS

• Available in 3 standard sizes, in metal or polypropylene construction, totaling 6 models.
• Wider units, comprising two or more workstations can be positioned side-by-side with junction connections option.
• High capacity air handling system delivers face velocity of 80 fpm at the work surface.
• A low airflow alarm warns of insufficient face velocity.
• The Air Science? filter assembly is easy to access, easy to change.
• A unique filter clamping design eliminates bypass leakage outside the cabinet.
• Accessories include an optional filter saturation alarm.
  
  

  Formula	Description
  GP Plus!	The most widely used filter in the range, primarily for solvent, organic, and alcohol removal.
  ACI Plus!	Neutralizes volatile inorganic acid vapors.
  ACR	Iodine and methyl iodide vapors. It is frequently used for iodination reactions with low level radioactive iodine.
  ACM	Mercury vapor.
  AMM	Removes vapors from dilute ammonia solutions and to remove low molecular weight amines.
  SUL	Designed to remove hydrogen sulphide and low molecular weight mercaptans.
  CYN	Removal of hydrogen cyanide. Many cyanide compounds will evolve HCN gas if acidified, so this filter is normally specified if working with any cyanide compound.
  FOR	Designed to oxidize formaldehyde and glutaraldehyde fumes. It is widely used in hospital pathology laboratories.
  ETH	Diethyl ether is adsorbed on activated carbon, but because of its low boiling point, local heat adsorption can reduce the capacity of the filter. Special impregnation allows a chemical reaction which increases the filter capacity.
  HEPA / ULPA	Powders and particulates.

  
  (1 main filter is required) The GP Plus or HEPA/ULPA are most common.
  
  

  Model	Dimensions			Weight (lbs/Kg)
  	Internal Height	External Dimensions (W x D x H)	Shipping (W x D x H)	Net	Ship
  DWS24	15.75" 400 mm	24" x 22.75" x 31.5" 610 x 580 x 800 mm	40" x 40" x 40" 1016 x 1016 x 1016 mm	120 / 55	160 / 73

  Specifications
  Airflow (CFM)	145CFM
  Face Velocity (FPM)	80FPM
  Filter Type	Carbon
  Fume Hood Type	Down Flow Workstation
  Internal Height	15.8in
  Lighting	Compact fluorescent lighting
  Noise Level	< 52dB
  Construction	White epoxy coated steel frame and head unit. Clear side panels. Stainless steel spill tray
  Depth	22.8in
  Height	31.5in
  Width	24in
  Power Requirements	120V, 60Hz or 220V, 50Hz voltages available
  Weight	120lbs