Ductless Downflow Workstations
"The World’s Most Extensive Selection of Ductless Downflow Fume Hoods."
24 • 36 • 48
Provides Feature-Rich Operator Safety & Facilitates
Operator-Intensive Applications with Unrestricted Access
Meets or Exceeds OSHA, ANSI and other International Standards
— DWS24
Product Overview
p:2
JUMP TO:
Features
and Callouts (p.3)
DWS® Controller
Options (p.4)
Airflow and Multiplex™
Filtration Technology (p.5)
Specifications (p.6)
Options and
Accessories (p.7)
Ductless Downflow Workstations
Downflow Workstations
Downward a irflow protects ope rator
from fume and particle hazards.
Unrestricted front and sid e access to work area.
Easy to chan ge filter.
Improved filter clamping eliminates.
bypass leakage.
Low airflow alarm.
High capacity filters.
DWS48, shown
APPLICATIONS
• Chemical
• Dental
• Forensic
• Histology
• Industrial
• Microscopy
• Pharmaceutical
• Powder
fingerprinting
• Veterinary
applications
INTRODUCTION
Air Science DWSTM 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
out-side. Many units
are portable and
may be moved from
one location to the
next with minimal
down-time 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.
Made in
the U.S.A.
This Product Exceeds OSHA, ANSI and Other International Standards.
Product Features
p:3
Ductless Downflow Workstations
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 sur face 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. Internal Manual Speed Controller: Authorized
personnel 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 sur face 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.
DWS24, shown with optional mobile cart.
Air Science
®
120 6th Street • Fort Myers, FL 33907 • T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677 • www.airscience.com
Product Features
p:4
THE AIR SCIENCE
PERFORMANCE
ADVANTAGE
Each Air Science fume
hood includes features
expressed through sound
design and certified
quality construction.
Options and accessories
add functional
performance to meet
specific applications.
• Professional Quality.
Air Science fume
hoods comply with
current technical and
safety regulations.
• Multiplex Filtration.
The Air Science
Multiplex™ Filter offers
a range of options for
high performance.
• Industrial
Components.
The cabinet frame
and work surfaces
are durable and
chemically resistant.
• Reliability.
Internal systems
are isolated from
fumes, extending
product life.
Ductless Downflow Workstations
The standard Advanced control panel includes an on/off switch, low airflow alarm and hour meter to
aid in determining available filter life.
An optional electronic Filter Saturation Alarm (FSA) is available with the optional Advanced control panel. In
additio n to all the features of the Advanced control panel the FSA adds an electron ic gas sensor and e mits
audio and visual a lerts when the mai n filter needs to be changed.
Air Scie nce fume h oods use
energy-efficient ebmpapst™
brand centrifugal blowers
for long life, dependable
performance.
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.
DWS36, shown in black with acryl ic side option
Metal units powder coated black; Polypropylene
units mad e with blac k material.
This Product Exceeds OSHA, ANSI and Other International Standards.
Product Filtration
p:5
AIR SCIENCE
MULTIPLEX™ FILTRATION
TECHNOLOGY
Multiplex Filtration
consists of a pre-filter
and main filter to create
a combination of
chemical and physical
architecture customized
to each application.
The mechanical design
enhances safety,
convenience and
overall value.
• The electrostatic
pre-filter is accessible
from within the
cabinet.
• A filter clamping
mechanism allows
for the filter to be
easily installed
and ensures an
even seal at the filter
peripheral face at
all times to prevent
bypass leakage.
• The filter chamber
prevents contaminated air from
contacting internal
cabinet mechanisms.
• The main filter type
and installation date
are displayed in a
front-access window.
The Air Science carbon
filtration technique is
based on enhanced,
activated carbon
particle formulations
from specially selected,
naturally occurring raw
material superior to
wood or other organic
sources. The carbon
is treated to attain the
proper porosity and
aggregate surface area
and to react with several
ranges of aerosolized
chemicals moved
through the filter by an
air handling blower.
• The multiplex option
permits one or more
filtration options to be
combined to meet
a wider range of
multiple-use applications. Multiplexing
permits configuration
for the capture of
acids, bases and
particulates such as
biological aerosols
when paired with
HEPA or ULPA filters.
• The Air Science
carbon filter is a
self-contained
assembly sized to fit
the specified product
model number, and
configured to optimize
airflow across 100%
of the filter surface
area for maximum
efficiency, prolonged
filter life, optimal
diffusion and
saturation capacity,
and user safety.
Air Science is the
single source supplier
for all pre-filters and
carbon filters used
in its products, plus
those of many other
manufacturers.
ENHANCED FILTRATION
TECHNOLOGY
The Air Science EFT™ is
a universal filtration
system developed for
use with a wide range
of core chemical
families. These include
organic acids, aliphatic
hydrocarbons,
aromatic hydrocarbons, alcohols, esters,
aldehydes, ketones,
ethers, halogens and
others. Although the EFT
system is weighted to
accommodate these
families, it can handle
inorganic acids as well.
Available as an option
on Air Science Downflow
Workstations.
Ductless Downflow Workstations
DWS DOWNFLOW WORKSTATION
AIRFLOW PATTERN
Exhaust Air
Fan / Blower
A
Electrostatic
Pre-filter
Pre-filter may be
changed from below
the work surface while
unit is running
Rear Air
Plenum
Filtration
DWS36, shown with Multi plex Filtration System.
DWS Downflow Workstations maintain a c onstant face velocity of 80 FPM at the work surface
in compliance with USA and international standa rds for safety and performance.
Contaminated air i s pulled through the Multipl ex filtration system where activated carbon
adsorbs chemical vapors an d/or particulates if HEPA/ULPA filters are used.
Clean air is returned to the room.
A. The main filter is easy to repla ce, no tools required. The fi lter clamps tightly against the
filter gasket to prevent filter bypass and maintain filter integrity.
Downflow
Room Air Intake
MULTIPLEX FILTRATION SYSTEM, SUMMARY
Pre-Filter Main Filter
Electrostatic Protects t he main filters from aerosols, mists, dust and par ticul ates
Activated Carbon FILTC O™ Sourced. A single carbon filter containing activated
Singl e:
One ty pe of activated carbon.
Stacked:
Two or more single filters each
with a different type o f carbo n.
HEPA/UL PA A self-contained filter designed to physically capture particles
with filter effi ciency superior to 95.5% down to 0.5 microns.
Standard --
carbon granules chemically formulated to capture one or more
specific vapors or family of vapors.
-- Specify
-- Specify
larger than 0.3 microns (H EPA) or 0.12 microns (ULPA).
-- Specify
Air Science
®
120 6th Street • Fort Myers, FL 33907 • T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677 • www.airscience.com
Product Specifications
p:6
Ductless Downflow Workstations
DWS24
DWS36
DWS48
Side View
MODEL DIMENSIONS WEIGHT
Metal Polypropylene Internal Height External ( W x D x H) Shipping ( W x D x H) Net Ship
Standard Models
DWS24 DWS24-PP
DWS36 DWS36 -PP
DWS48 DWS48 -PP
Specifications are subje ct to chang e without notice.
15.75"
400 mm
15.75"
400 mm
15.75"
400 mm
24" x 22.75" x 31.5"
610 x 580 x 800 mm
36" x 22.75" x 31.5"
915 x 580 x 800 mm
48" x 22.75" x 31.5"
1220 x 580 x 80 0 mm
40" x 40 " x 40"
1016 x 1016 x 1016 mm
40" x 45" x 40 "
1016 x 1143 x 1016 mm
40" x 55" x 40"
1016 x 1397 x 1016 mm
120 / 55 160 / 73
131 / 60 227 / 103
185 / 84 25 0 / 114
PRODUCT SPECIFICATIONS
DWS™ Model DWS24 DWS36 DWS48
Airflow CFM 145 290 435
Face Velocity FPM 80 80 80
Noise, d BA, 1 mete r < 52 < 52 < 52
Lighting
Construction
Blower
Electrical
Electrical Switches
Monitoring
<… White epoxy coated steel frame an d head unit. Clear side panels. Stainless steel spill tray. …>
<… 120V, 60Hz or 220V, 50Hz voltag es avail able. Specif y when o rdering. Othe r voltage options availa ble. …>
<… Compact fluorescent lighting. …>
<… ebmpapst
™
centrifugal fan.
…
<… Main On/Of f …>
<… Low airflow alarm, standard. …>
>
(
lbs/Kg
)
Filter Specifications
Pre-Filter Electrostatic, 1 lbs/ .45 kg (nominal)
Ma i n* (1) 22 lbs / 10 kg (1) 27 lbs / 12.3 kg (1) 27 lbs / 12.3 kg
STANDARDS & COMPLIANCE
Quality Management Systems ISO 9001
Carbon Filter Efficiency BS 79 89-20 01
Biological Safety Filter
Efficiency HE PA and ULPA
Electrical Safety UL- C- 61010 -1
Product Design ANSI Z 9.5-2003
OSHA, Occupational Safety
and Health Administration
Environment IS O 14 0 01
Air Science
®
120 6th Street • Fort Myers, FL 33907 • T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677 • www.airscience.com
AFNOR N FX 15-211
IEST-RP- CC- 0034.2
I EST- R P- CC 0 07.1
IEST-RP-CC001-4
EN 18 22
CE Mark
ROHS Exempt under EEE Ca tegor y 9
ANSI Z 9.7-1998
OSHA Standard -29 CRF, Safety and Health Regulations for General Industry, 1910.1450: Occupational exposure to
hazardous chemicals in laboratories. Part B, definition, lab-oratory type hood. The DWS meets this definition when
fitted with acrylic side window and front sash.
Energy Star Partner
Product Options
p:7
Ductless Downflow Workstations
OPTIONS & ACCESSORIES
DWS Model
Filter Saturation
Alarm*
Base Sta nd,
Mobil e, with
Casters
Base Cabinet,
Fixed
ADA
Compliance*
Polypropylene
Construction*
Stainl ess Steel
Hanging Rod*
Side Windows
Attachment*
Front Sash
Attachment*
Junction
Connections*
Rear Sh elf Epoxy coated steel
Bla ck* Metal units powder
An electronic gas sensor
emits audio and visual
alerts when the main filter
needs to be changed.
The 34" tall mobile cart
provides a lower sto rage
shelf; accommodates
wheelchair access.
Locking casters fix the
hood in place.
Provides enclosed
storage space.
(specify: Yellow, Blue,
White, locking casters or
leveling feet)
Provides wheelchair
access and lowered
remote controls.
Cabinets are available
in all polypropylene
construction. Contact Air
Science for information.
Hanging rod spans the
width of the cabinet.
Transparent acrylic side
panels for the downflow
workstation.
Transparent acrylic front
sash for the downflow
workstation.
Connects two or more
workstations to form a
continuous unit with only
one control system.
15" rear shelf provides
additional storage space
for operator tools and
analysis materials.
coated black; Polypropylene units made with
black material.
DWS24
DWS24-PP
FSA FSA FSA
P5-CART P15-CART P20-CART
P5-ENCB P15 - ENC B P20 - ENCB
DWS36
DWS36-PP
DWS48
DWS48-PP
All DWS mod els are availab le in
<… ADA compliant configurations. Contact …>
Air Science for ordering information.
DWS24-PP DWS36-PP DWS48-PP
HANGR-XX
<… Must ord er ACRYLIC SIDE WINDOWS option. …>
SIDE WINDOW SIDE WINDOW SIDE WINDOW
<… Must ord er ACRYLIC SIDE WINDOWS option. …>
JUNCT-FR JUNCT-FR JUNCT-FR
DWS-S DWS-S DWS-S
BLACK BL ACK BLACK
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 vapo rs. It is frequent ly
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 hydroge n sulphide and l ow
molecular weight mercaptans.
CYN Removal of hydrogen cyanide. M any cyani de
compounds will evolve HCN gas if acidifi ed, so
this filter is normally specified if working with any
cyanide compound.
FOR D esign ed to oxid ize formaldehyd e and
glutara ldehyd e fumes. It is widely used in
hospital pathology laboratories.
ETH Diethyl ether is adsorbed on activated carbon,
but bec ause of its low boi ling po int, local heat
adsorption can reduce the capacity of the filter.
Special impregnation allows a chemical reaction
which increases the filter capacity.
HEPA /UP LA Powders and particulates.
Universal filtration.
* Factory installed; specify when ordering.
120 6th Street • Fort Myers, FL 33907
T/239.489.0024 • Toll Free/800.306.0656 • F/800.306.0677
www.airscience.com
©2013 Air Scien ce OW 9937 06/13
Air Scie nce, DWS, Mu ltiple x, and EFT a re all regi stered tra demarks o f Air Scie nce Corp oration
Loading...