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™
Micro-Klean
RW Series
Micro-Klean™ RW Series Advanced Cartridge Filter Technology For Optimum RO
Membrane System Protection
3M Purication Inc. has developed a line of lter cartridges, the Micro-Klean™
RW series, specically designed for greater protection of RO membrane systems.
Micro-Klean RW series cartridges, manufactured using 3M Purication’s rigid
extrusion bonded technology, are all-polypropylene depth lters offering the
following premium features:
• Consistent particle reduction efciencies throughout the lter’s life
• Increased surface area for extended lter life
• Low initial pressure drop for enhanced ow
Superior Contaminant Holding Capacity = Longer Service Life = Fewer
Filter Change-outs
3M Purication’s manufacturing process allows grooves to be machined into the
upstream lter surface, without tearing or melting the lter structure, providing for
more than double the effective surface area than non grooved lters. Also, unlike
soft melt blown and stringwound lters that require core
support, the Micro-Klean RW
series lter is self-supporting.
The increase in surface area
prevents premature blinding
of the outer surface by large
particles and promotes fuller
utilization of the depth matrix,
resulting in signicantly longer
life than competitive lters
(see graph).
Life Comparison of Micro-Klean™ RT Series
100
75
RT
™
50
Features & Benefits
Rigid depth filter construction
Reduced possibility of filter unloading at higher
differential pressures
Improved protection of downstream RO membranes
Enhanced contaminant holding capacity
Fewer filter change-outs, reduced manpower
requirements
Core-less filter structure
Ease of disposal via incineration or shredding
All-polypropylene construction
Approved for use in potable water applications
(ANSI/NSF Standard 61 certified)
2.5" outer diameter specification
Fits through mid-plates used in large horizontal filter
housings
Consistent Particle
Percent (%) of Micro-Klean
Series Filter Life
25
Reduction Efficiency =
Improved RO Membrane
Protection
The rigid Micro-Klean
RW series structure resists
deformation, lter by-pass,
compression, and particle
unloading. This allows Micro-Klean RW series lters to achieve excellent ltration
efciency up to a differential pressure of 35 psid while other “exible” competitive
melt blown and string wound lters exhibit signicant drops in reduction efciency
at much lower differential pressures (10 psid).
1
0
Micro-Klean™ RT Series Meltblown 1
Meltblown 2 Wound Filter
Meltblown 3
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Lower Initial Differential Pressure = Smaller Filter
Housing Requirements
The unique design and construction of the Micro-Klean™
RW series lter results in signicantly lower pressure drop
when compared to competitive lters. For a given differential
pressure, Micro-Klean RW series lters yield ows up to
ten times that of competitive melt blown and string wound
lters. When sizing a system for a given process ow rate, this
translates into lower capital investment for lter housings and
fewer cartridges to purchase.
Specifically For Use in Pre-RO Systems
Micro-Klean RW series cartridges are specically designed for
use in large industrial lter housings typically used for pretreatment before RO membrane systems. The outer diameter
specication of 2.5" ensures that lers will comfortably t
through support mid plates frequently used in large horizontal
housings. Micro-Klean RW series cartridges are available
in double open end (DOE) and single open end (SOE)
congurations. The SOE congurations include plastic at end
cap and integral plastic spring cap versions for effective sealing
of the cartridges in the housings.
Micro-Klean RW series lter cartridges are certied to ANSI/
NSF Standard 61 making their use acceptable for use in
probable water systems.
Table 1. – Micro-Klean RW™ Series Filter Specifications*
Construction
Filter Media, End Connectors Polypropylene
Gaskets & O-ring Options Nitrile
Operating Conditions
Maximum Opening Temperature 176 °F (80 °C)
Maximum Differential Pressure 15 psid @ 176 °F (1.0 bar @ 80 °C)
25 psid @ 140 °F (1.7 bar @ 60 °C)
60 psid @ 68 °F (4.1 bar @ 20 °C)
Recommended Change-out Differential
Pressure
Cartridge Dimensions
Inside Diameter (nominal) 1.1" (28 mm)
Outside Diameter (maximum) 2.5" (64 mm)
Length (nominal) see ordering guide 30" - 40" (762 - 1016 mm)
Materials used in the manufacture of Micro-Klean RW series filters meet the requirements
of USFDA 21 CFR for food and beverage contact. Micro-Klean RW series filters have been
certified to ANSI/NSF Standard 61
35 psid @ 68 °F (2.4 bar @ 20 °C)
Regulatory
* For more information on Micro-Klean RT series filter
cartridges, please consult the Micro-Klean R T series
brochure (Literature # LITCPOLYK LN).
Micro-Klean™ RW Series Filter Cartridge Ordering Guide
Ca r tridge Type Length
RW -
Micro-Klean RW
Series
30 - 30 inches
40 - 40 inches
Grade
(Microns)
Y - 1
B - 5
Material Surface Packaging Ring Support End Modification
17 - Polypropylene G - Grooved 2 - Bulk 0 - None
2
This Micro-Klean RT series
series filter is tested and certified by WQA against NSF/ANSI
Standard 61
For Material Requirements Only
NN - None
FD - 222 O-ring (Nitrile) &
Flat Cap
1D - 222 O-ring (Nitrile) &
Spring Cap
RN - Spring Cap
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Important Notice
The information described in this literature is accurate to the best of our knowledge. A variety of factors, however, can affect the performance of the Product(s) in a particular
application, some of which are uniquely within your knowledge and control. INFORMATION IS SUPPLIED UPON THE CONDITION THAT THE PERSONS RECEIVING THE
SAME WILL MAKE THEIR OWN DETERMINATION AS TO ITS SUITABILITY FOR THEIR USE. IN NO EVENT WILL 3M PURIFICATION INC. BE RESPONSIBLE FOR DAMAGES
OF ANY NATURE WHATSOEVER RESULTING FROM THE USE OF OR RELIANCE UPON INFORMATION.
It is your responsibility to determine if additional testing or information is required and if this product is fi t for a particular purpose and suitable in your specifi c application.
3M PURIFICATION INC. MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OF ANY OTHER NATURE HEREUNDER WITH RESPECT TO INFORMATION OR THE PRODUCT TO WHICH
INFORMATION REFERS.
Limitation of Liability
3M Purifi cation Inc. will not be liable for any loss or damage arising from the use of the Product(s), whether direct, indirect, special, incidental, or consequential, regardless of
the legal theory asserted, including warranty, contract, negligence or strict liability. Some states do not allow the exclusion or limitation of incidental or consequential damages,
so the above limitation may not apply to you.
3M Purifi cation Inc.
400 Research Parkway
Meriden, CT 06450
U.S.A.
Phone (800) 243-6894
(2 03) 23 7-55 41
Fax (203) 630-4530
www.3Mpurifi cation.com
Please recycle. Printed in U.S.A.
3M is a trademark of 3M Company.
Micro-Klean is a trademark of
3M Company used under license.
© 3M 2011. All rights reserved.
70-0202-0753-9 REV 1011pb
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