Sorvall CW2 Plus Blood Cell Washing System

Sorvall CW2 Plus Blood Cell Washing System
Thermo Scientific
Sorvall CW2 Plus
Blood Cell Washing
Precise, automated performance for blood cell washing
Thermo Scientific Sorvall CW2 Plus Blood Cell Washing System
This advanced, easy-to-use instrument simplifies work
and reduces time required to wash blood cells for antiglobulin
reagent tests such as ABO compatibility, Rh testing, cross matching
and the Coombs procedure.
Fully Automated for Reproducible Results
Standardized, consistent procedures
eliminate the variations that result
from manual protocols, so reliable,
reproducible results are a matter of
routine. Automatic alerts indicate if
the saline level is low, and when a
run is complete.
Compact and Durable
The Sorvall CW2 Plus fits neatly on
any laboratory bench. Lowmaintenance design ensures
years of trouble-free use:
• pump tubing is easily changed
• brushless motor
• corrosion free plastic housing
Easy, Reliable Operation
The Sorvall® CW2 Plus offers a timesaving wash cycle, easy-to-read
digital displays, easy-to-use touchpad
controls and standardized, reproducible
procedures. Simply insert the sample
tubes, select the test parameters,
and benefit from reliable results
in minutes.
Our Sorvall CW2 Plus is designed to be
used in accordance with The American
Association of Blood Banks’ guidelines
as defined in the most recent edition of the
AABB Technical Manual.
Simplifying Every Step
in Blood Cell Washing
Manual or Automatic: Flexible Modes
to Meet Your Needs
Automatic Mode
Simply load the rotor with tubes and select up to four wash cycles.
The microprocessor-controlled Sorvall CW2 Plus automatically does
the rest, accurately and reliably.
Manual Mode
The Sorvall CW2 Plus can also be used as an ordinary centrifuge,
set to spin for any time up to 999 seconds. Using the agitate
button, samples can be agitated for five seconds.
Sorvall CW2 Plus
Meets AABB
Tube tests for determination
of ABO type of red cells and serum
Direct antiglobulin tests
Indirect antiglobulin test for
the detection of antibodies to
red cell antigens
Saline indirect antiglobulin test
LISS indirect antiglobulin test
PEG indirect antiglobulin test
Maximize Antiglobulin Reagent Reactivity
Use Standard Tubes
An automatic decanting cycle, with its reproducible
speed and angle, consistently removes more saline
than even the most skillful hand decanting, leaving a
dry cell button. For washing, the rotor allows tubes to
swing at a fixed positive angle to sediment cells rapidly
at the bottom of the tube. For decanting, the rotor holds
tubes at a slightly negative angle and the saline is
decanted centrifugally. There is virtually no dilution of the
Coombs serum, since red cells form a very high
percentage of the final tube volume after saline
One distributor handles both 12 x 75 mm or 10 x 75 mm
tubes. The integral rotor carries 12 tubes, but can
operate with any balanced load of fewer tubes. The rotor
also functions as an incubator rack, so if two or more
rotors are used, several test lots can be processed at
the same time.
The Sorvall CW2 Plus sounds an alarm during the filling
step in the wash cycle if the saline supply is low or
disrupted, and the system automatically shuts down.
Complete Automation for Increased Productivity
Agitate Cycle
The fully automated four-wash cycle takes care
of all the necessary steps for precise, thorough cell
washing. After the cells are washed, simply add the
antiglobulin reagent, centrifuge the samples, and read
the results.
To ensure proper re-suspension of red cell buttons in
each tube, the Sorvall CW2 Plus automatically agitates
the tubes after each wash cycle. The agitate cycle can
also be used manually to improve mixing of red cells
with the antiglobulin reagent.
Low Saline Detection
Eliminate Cross-Contamination
Easily Check System Steps
Nothing but fresh saline enters the tubes. The distributor
is mounted directly on top of the rotor, ensuring that all
saline dispensed enters the tubes. The unique decanting
system removes all wash fluid centrifugally, and the
deflector and catch basin prevents saline splash back,
minimizing potential aerosol and corrosion problems.
This also eliminates the possibility of salt build-up, as
the rotor chamber remains dry at all times.
The Sorvall CW2 Plus is designed to allow interruption of
the cycle at any time, so you can check that the system
is functioning properly. You can check the fill level and
look for good re-suspension, check the packing
consistency of cell buttons, and check after the decant
step that cells are retained and buttons are dry.
Easy to Clean
After daily use, the catch basin can be easily removed
and the rotor and rotating bowl lifted out, allowing easy
access to clean the top half of the instrument.
Easy-to-read digital displays for simple, user-friendly operation.
Shows time selected in
automatic or manual mode
Enunciator lights at end of run
Shows number of wash
cycles selected
Lid latch
LED display lights at end of run
Saline level
Enunciator lights and alarm
beeps when level is low
Specifications and Ordering Information
Thermo Scientific
Sorvall CW2 Plus
Blood Cell Washing System
Maximum speed (rpm)
Fill/decant speed (rpm)
Maximum RCF (x g)
Decant RCF (x g)
Maximum capacity
Operating modes
Collection bowl
Safety and effectiveness
Dimensions (H x D x W) mm (inches)
Weight kg (lb)
Sorvall CW2 Plus
3,550 at 60 Hz
700 at 60 Hz (580 at 50 Hz)
(12) 12 mm x 75 mm or 10 mm x 75 mm tubes
85 second wash cycle
High speed for time selected
Stops at end of each step in cycle to enable procedure verification
Selects operating mode (auto or manual)
Selects 1, 2, 3 or 4 wash cycles in automatic mode
Selects centrifugation time in manual mode (999 seconds)
Selects operating function: start, stop, check, manual, agitate, alarm
on/off, low saline
2-speed brushless induction motor; dynamic braking in automatic mode
Polypropylene with replaceable tube holders
CSA certified
510(k) number BK820020
627 x 434 x 320 (24.7 x 17.1 x 12.6) lid open
386 x 434 x 320 (15.2 x 17.1 x 12.6) lid closed
17.8 (39.3) crated
15.4 (34) uncrated
Ordering Information
Catalog Numbers
Sorvall CW2 Plus (100/120/240V 50Hz)
Sorvall CW2 Plus (100/120/240V 60Hz)
Replacement tubing kit
Spare parts kit (includes replacement tubing kit)
© 2011 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are the property of Thermo Fisher Scientific Inc. and its subsidiaries. Specifications, terms and pricing are subject to change.
Not all products are available in all countries. Please consult your local sales representative for details.
North America: USA/Canada +1 866 984 3766 (866-9-THERMO)
Europe: Austria +43 1 801 40 0, Belgium +32 2 482 30 30, France +33 2 2803 2180, Germany national toll free 08001-536 376,
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Other Asian countries +852 2885 4613 Countries not listed: +49 6184 90 6940 or +33 2 2803 2180
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