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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.
 
(pdf download)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 ductwork, 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.
APPLICATIONS
  • Chemical
  • Dental
  • Forensic
  • Histology
  • Industrial
  • Microscopy
  • Pharmaceutical
  • Powder fingerprinting
  • Veterinary applications
 

DWS24, shown with optional mobile cart.
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 specifi cations 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.
Air Science® fume hoods use energy-efficient ebmpapst™ brand centrifugal blowers for long life, dependable performance.
 
 
Model
Dimensions
Weight (lbs/Kg)
Metal
Polypropylene
Internal
Height
External Dimensions
(W x D x H)
Shipping
(W x D x H)
Net
Ship
 
 
Standard Models
DWS24
DWS24-PP
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
DWS36
DWS36-PP
15.75"
400 mm
36" x 22.75" x 31.5"
915 x 580 x 800 mm
40" x 45" x 40"
1016 x 1143 x 1016 mm
131 / 60
227 / 103
DWS48
DWS48-PP
15.75"
400 mm
48" x 22.75" x 31.5"
1220 x 580 x 800 mm
40" x 55" x 40"
1016 x 1397 x 1016 mm
185 / 84
250 / 114
 
 
Product Specifications

 
DWS™ Model
DWS24
DWS36
DWS48
Airflow CFM
145
290
435
Face Velocity FPM
80
80
80
Noise, dBA, 1 meter
< 52
< 52
< 52
Lighting
Compact fluorescent lighting.
Construction
White epoxy coated steel frame and head unit. Clear side panels. Stainless steel spill tray.
Blower
 ebmpapst™ centrifugal fan.
Electrical
120V, 60Hz or 220V, 50Hz voltages available. Specify when ordering. Other voltage options available.
Electrical Switches
Main On/Off
Monitoring
Low airflow alarm, standard.
 
 Filter Specifications
Pre-Filter
Electrostatic, 1 lbs/ .45 kg (nominal)
Main*
(1) 22 lbs / 10 kg
(1) 27 lbs / 12.3 kg
(1) 27 lbs / 12.3 kg
 
 
Standards & Compliance

 
Quality Management Systems
ISO 9001:2008
Carbon Filter Efficiency
BS 7989-2001
SEFA Standard 9
AFNOR NFX 15-211
Biological Safety Filter Efficiency HEPA and ULPA
IEST-RP-CC-0034.2
IEST-RP-CC007.1
IEST-RP-CC001-4
EN 1822
Electrical Safety
UL-C-61616A
CE Mark
ROHS Exempt under EEE Category 9
Product Design
ANSI Z 9.5-2003
ANSI Z 9.7-1998
OSHA, Occupational Safety and Health Administration
OSHA Standard -29 CRF, Safety and Health Regulations for General Industry, 1910.1450: Occupational exposure to hazardous chemicals in laboratories. Part B, definition, laboratory type hood. The DWS™ meets this definition when fitted with acrylic side window and front sash.
Environment
ISO 14001
Energy Star Partner
 
Options and Accessories

 
DWS™ Model
 
DWS24
DWS24-PP
DWS36
DWS36-PP
DWS48
DWS48-PP
Filter Saturation Alarm*
An electronic gas sensor emits audio and visual alerts when the main filter needs to be changed.
FSA
FSA
FSA
Base Stand, Mobile, with Casters
The 34" tall mobile cart provides a lower storage shelf; accommodates wheelchair access. Locking casters fix the hood in place.
P5-CART
P15-CART
P20-CART
Base Cabinet, Fixed
Provides enclosed storage space. (specify: Yellow, Blue, White, locking casters or leveling feet)
P5-ENCB
P15-ENCB
P20-ENCB
ADA Compliance*
Provides wheelchair access and lowered remote controls.
All DWS™ models are available in ADA compliant configurations. Contact Air Science® for ordering information.
Polypropylene Construction*
Cabinets are available in all polypropylene construction. Contact Air Science® for information.
DWS24-PP
DWS36-PP
DWS48-PP
Stainless Steel Hanging Rod*
Hanging rod spans the width of the cabinet.
HANGR-XX
Must order ACRYLIC SIDE WINDOWS option.
Side Windows Attachment*
Transparent acrylic side panels for the downflow workstation.
SIDE WINDOW
SIDE WINDOW
SIDE WINDOW
Front Sash Attachment*
Transparent acrylic front sash for the downflow workstation.
 Must order ACRYLIC SIDE WINDOWS option.
Junction Connections*
Connects two or more workstations to form a continuous unit with only one control system.
JUNCT-FR
JUNCT-FR
JUNCT-FR
Black*
Metal units powder coated black; Polypropylene units made with black material.
BLACK
BLACK
BLACK
*Factory installed; specify when ordering.
 
DWS36, shown in black with acrylic side option
 
 
Filter Summary

 
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 fi lter 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.
Enhanced Filtration Technology
Universal filtration.
 

7480

7481

7482

7483

7486

Custom Enclosure

DWS

Safekeeper

SafeSwab

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Friday, July 27, 2018

MASSIVE SALES NOW! 2

1/each BRAND NEW ROTARY JAPANESE QUALITY EVAPORATORS- complete- STARTING AT 2999.99- check back daily
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We configure GPC systems- call Bill at 732-558-6170

Wednesday, July 25, 2018

MASSIVE SALES NOW! 1

1/each BRAND NEW ROTARY JAPANESE QUALITY EVAPORATORS- complete- STARTING AT 2999.99- check back daily
*3 Year Warranty NEW 5 Place Balances
We configure GPC systems- call Bill at 732-558-6170

Thursday, July 5, 2018

MASSIVE SALES NOW! 3

1/each BRAND NEW ROTARY JAPANESE QUALITY EVAPORATORS- complete- STARTING AT 2999.99- check back daily
*3 Year Warranty NEW 5 Place Balances
We configure GPC systems- call Bill at 732-558-6170

NEW ARRIVALS/JUST IN: Great Quality Used Equipment

AGILENT 4000 UV-VIS

AGILENT ECLIPSE SYSTEM AGILENT 55AA Atomic Absorption

AGILENT 7500 ICP-MS


Featured items - new!

Used equipment specials

WHY YOU SHOULD CHOOSE TO DO BUSINESS WITH TRIAD SCIENTIFIC

1. EXPERIENCED-We have been building labs, equipping labs, and supplying lab equipment parts and service for over 20 years. With over 100 years of combined lab equipment experience at our site and working with many experienced technicians, we try to offer the right equipment at the right price for you, our partner.

2. SAVE MONEY- We sell, lease, and rent - You save money, 5-70% off original retail, so you get great equipment at a great price.

3. WARRANTY -We offer a warranty on our refurbished equipment and new manufacturer warranty on new equipment.

4. SERVICE- We offer instrument service, refurbishment validations, and calibrations at great rates and skill levels.

5. INSTRUMENT PARTS- We sell new instrument parts and new equipment parts and hard to find used older parts

6. UNIQUE- We are an independent dealer and also sell used instruments, such as AA, FTIR, GC, GC/MS, HPLC, LC/MS, ICP, ICP/MS, Particle Size Analysis, UV/VIS, and UV/VIS/NIR. This equipment is manufactured by companies like Agilent, Hewlett Packard, Waters, Hitachi, Perkin Elmer, Shimadzu, Beckman, and more. WE ARE NOT AFFILIATED WITH THESE COMPANIES IN ANY WAY!

7. BUILD LABS- We well discounted made in USA Lab Casework, Fume hoods, Blowers, Safety Cabinets, and Clean Benches.

8. CASH PAID-Top dollar paid, and you can sell your excess, obsolete, surplus equipment with us. We can buy it or sell on consignment.

9. DIVERSIFIED-We sell a very broad line of new and used Lab Equipment. See our detailed listing above.

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