3M DUOFLO Specifications

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a 3M company
®
®
DuoFLO Filter Systems
Filter Cartridge Benefits...
...Filter Bag Economy
Easily retrofits standard bag filter housings
Provides up to 4 times or more life than conventional bag filters
Eliminates filter media rupture, contaminant by-pass and unloading
Reduces hold-up volume by up to 67% or more
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The CUNO DuoFLO filter system is an advanced proven alternative to the use of standard bag filters. Developed using CUNO's extensive depth filtration experience, the DuoFLO filter features a true graded-porosity media structure and a 62 % increase in filter surface area. Compared to conventional felt filter bags, DuoFLO filters provide:
up to 4 times or more the service life
+
superior contaminant removal efficiency
+
enhanced flow per filter element
+
reduced loses associated with frequent filter change-outs (production
+
downtime, disposal, and labor costs)
The DuoFLO filter will easily retrofit most existing bag filter housings. To take advantage of the DuoFLO system in applications where bag filter housings are currently in use, simply remove the existing bag support basket, replace it with a DuoFLO support basket, and insert the DuoFLO filter. For new installations, CUNO offers a full line of DuoFLO filter housings (page 5).
The DuoFLO element is comprised of two cylinders bonded to a top plate and a lower seal plate. As shown in Figure 1, the fluid enters the top of the filter through flow channels located in the DuoFLO filter top plate. The fluid flows between the inner and outer media cylinders, and then passes through the media and support basket into the clean chamber of the filter housing.
Top P lat e
Flow Channels
The DuoFLO design incorporates an innovative new geometry of both filter element and restrainer basket which provides 100% 3 dimensional support of the DuoFLO media. This eliminates the potential for filter element rupture and the resulting gross contamination of the downstream effluent with previously
Inner Media
Cylinder
Outer Media
Cylinder
removed particles. The design of the DuoFLO element also reduces filter element hold-up fluid volume by 67% compared to conventional bags, minimizing worker exposure to process fluids.
+
Filter design combining a graded-porosity media with 62% greater filter surface area
+
Hold-up volume reduced by 67% compared to conventional bag filters.
+
100%, downstream support of the filter element
+
Superior flow characteristics
+
Longer Service Life – up to 4 times or more that of conventional felt filter bags
+
Reduced Filter Usage - minimizes product loss, labor, disposal costs, and operator exposure
+
Increased productivity - less down time for filter change-out
+
Reduced product loss & related disposal costs
+
Used element retains less fluid, making it lighter weight for easier removal
+
Eliminates displacement balloons and associated spillage during change-out
+
Eliminates filter rupture, contaminant bypass and unloading
+
Allows operation to higher differential pressures before filter change-out
+
Maximizes utilization of filter surface area and maintains low operating pressure drop
+
Reduces flow per unit area (flux) for improved effluent quality
Lower Seal
Plate
CUNO utilizes state-of-the-art technology to produce the DuoFLO filter element optimizing both performance and filtrate quality to ensure customer satisfaction. DuoFLO filter elements are sized to replace conventional # 1and # 2 bag filters and are available in both polypropylene and polyester materials (including 21 CFR listed materials) with nominal ratings from 1 to 200 micron.
1
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The DuoFLO filter design provides an increase in filter surface area of 62% when compared to commonly used #1 and #2 bag filters. This additional surface area provides the following benefits
Lower flux (flow rate per unit area): Since filter
+
life is inversely proportional to flux, reducing the flux by 50% can achieve up to a three-fold increase in filter life. Additionally, lower flux improves the retention efficiency of the element.
Lower initial pressure drop: This increases the
+
time before the recommended change-out pressure is reached
DuoFLO filters are offered in a graded porosity filter media where two media layers of different porosities are combined. The result is superior contaminant holding capacity. The added capacity is achieved by removing the larger contaminants in the first layer and the finer contaminants in the tighter, downstream layer (see Figure 2). The configurations of each nominally rated filter media have been optimized to achieve the longest service life. Media Migration is eliminated by thermally bonding the exterior surface of the downstream media layer.
Extensive testing, supported by field results, has demonstrated the superior life advantage achieved by DuoFLO elements while obtaining superior efficiencies. As shown in Graph 1, DuoFLO elements provide for up to 4 times the throughput compared to equivalently rated conventional bag filters (the life of the filters were measured to the same terminal differential pressure).
100
75
50
25
Throughput (Percent)
0
1 micron 5 micron 10 micron 25 micron
CUNO DuoFLO Elements
Competitor F
* Polypropylene media
22
Competitor FEX Competitor H
Competitor HEX
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®
DuoFLO Filter Elements
Simple Filter Removal - Simply insert the CUNO removal tool into the top plate and lift the filter from the housing.
Easy Filter Installation -.The
DuoFLO filter element is a rigid cylinder that easily slides into the support basket
Graded Porosity Media ­DuoFLO media consists of 2 layers. The first layer or upstream zone is “open” to remove the larger contaminant while the downstream zone is “tighter” to remove the smaller contaminant. This design provides greater contaminant holding capacity and longer life than conventional single layer media.
Reduced Hold-Up Volume ­A 67% reduction in hold-up volume significantly decreases lost product and disposal costs.
Superior Sealing Collar ­Constructed from molded polypropylene or polyester with an advanced sealing lip that provides a dynamic spring-like seal, the DuoFLO design eliminates contaminant bypass.
Size Hold-Up Volume (gallons)
#2 DuoFLO 1.4 #2 Standard bag
Support Basket - Full Support
of the filter element ensures filter integrity even under the most demanding conditions by eliminating the potential for media stretching which can open the pore structure and allow larger particles to pass.
4.3
Increased Surface Area -The
unique design provides 62% more area than typical bag filters for longer life and fewer filter change-outs.
Size Filter Area (ft )
#2 DuoFLO 6.7 #2 Standard Bags 4.1
Singed Media Surface - Many
filter bags release fibers that end up in the filtered product. The DuoFLO filter media is thermally treated to eliminate loose fibers.
2
The unique DuoFLO element design - 62% greater area and a unique
graded-porosity media structure - provides a service life advantage of up to 4 times greater than conventional filter bags. Other features media treatment, thermal seaming, ultrasonic bonding ensure that the
DuoFLO filter is unsurpassed in quality and performance.
Thermal Side Seam - Using advanced thermal sealing processes, the DuoFLO seam eliminates the problem of contaminants passing through large needle holes.
Integral Media to Plate Seal ­an integral seal between the plastic components and the filter media is ensured by using state-of-the-art ultrasonic welding techniques.
(sealing collar
of plastic parts to media)
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Each grade of DuoFLO filter is manufactured from high
)
(
performance fibers selected based on extensive media performance testing. No adhesives, binders, or silicone are used in the manufacturing process. The DuoFLO filter element is available in all-polypropylene, all-polyester, or polyester media with polypropylene lower seal and top plate construction.
DuoFLO elements are available in sizes and ratings to replace standard #1 and #2 filter bags as follows:
Nominal Removal Ratings (microns) 1, 5, 10, 25, 50, 100, and 200* Filter Diameter (inches/cm) 7 / 17.8 Filter Length (inches/cm) 14.3 / 36.3 27.8 / 70.6 Media Area (ft Hold Up Volume per Filter
(Gallons/Liters)
* available in polyester only
Maximum Operating Temperature (°F / °C) *
Maximum Recommended Flow Rate (gpm / lpm)
Maximum Forward Differential Pressure
Recommended Change-out Differential Pressure
CFR Compliant All component materials of the DuoFLO "PP"
* Maximum temperature ratings are dependent on the fluid being filtered -
2/m2
) 3.4 / 0.32 6.7 / 0.62
0.7 / 2.6 1.4 / 6.2
180 / 82 300 / 149
75
/ 284 150 / 568 75 / 284
35 psid @ 68°F (2.4 bar @ 20°C)
20 psid (1.4 bar)
polypropylene element and "FE" polyesterare
listed for food contact per 21 CFR 177.1520.
see Chemical Compatibility Table.
150 / 568
DuoFLO filter elements are compatible with wide range of chemicals and process conditions. The thermal and chemical resistance data presented is for guidance only. Factors such as duration, degree of concentration of a substance in a fluid and temperature should also be considered. Thermal and chemical resistance should also be considered when choosing all materials exposed to fluids. CUNO strongly recommends that compatibility be tested prior to use.
Biological Agents Excellent Excellent
Mineral Acids Excellent Good Organic Acids Excellent Excellent
Alkalies Excellent Poor Oxidizing Agents Fair Fair Organic Solvents Fair Good
Water (< 150°F) Excellent Fair
Flow vs. differential pressure for a DuoFLO #2 size element and support basket in water is depicted in Graph 2. A typical filter system is often sized for an initial differential pressure of 0.5 to 1 psi (0.04 to 0.07 bar). A lower flow rate per element typically extends the life of the filter system.
0.08
0.06
0.04
0.02
0
150
Differential Pressure (psid
1.2
1.0
0.8
0.6
0.4
0.2
1&5micron
10 & 25 micron
50, 100, & 200 micron
0
25
0
50
75
Flow (gpm)
100
125
bar)
Differential Pressure
*#2 Size Element and Support Basket Pressure Drop Only, housing pressure losses are not included.
4
0
100
200
300
Flow (lpm)
400
500
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CUNO DuoFLO filter housings are designed and manufactured to economically meet
demanding applications. The housings are available for #1 and #2 size DuoFLO filters
and are constructed from 304 or 316L stainless steel. DuoFLO ASME code housings
are designed, fabricated, and "U" stamped in accordance with ASME Section VIII, Division 1 for 150 psi @ 300°F*. For those applications not requiring AMSE code
housings, an economical "DFN" version is available. A variety of inlet/outlet connection styles are available (see specification table below). In addition, custom designs are available on request.
The DuoFLO filter housing allows the user to realize all of the benefits of the
DuoFLO filter element. A positive element sealing mechanism eliminates bypass of
unfiltered fluid into the effluent stream. Since the DuoFLO filter element has more
surface area and better flow characteristics, larger conventional bag housings can be eliminated in favor of smaller DuoFLO housings - reducing up-front capital expenditures and installation costs. In addition, the true “in-line” configuration of
the inlet and outlet connections allow for installation without the additional piping
and elbows required by conventional filter bag housings.
The flow configuration of the DuoFLO housing eliminates the “dirty chamber” that is common in bag filter housings, thus eliminating the potential for cross contamination of dirty fluid into the clean effluent during filter element change-out. DuoFLO housings incorporate a design that results in environmental, health, and safety benefitse by allowing used DuoFLO filter element removal without the spillage of, or contact by the operator with, the process fluid.
+ Positive element sealing
mechanism
+ No dirty fluid chamber
+
Inline piping configuration
+
Excellent flow characteristics
#1
304 or 316L
#2 150 / 568 100 lb/45.4 kg 12 lb/5.4 kg
#1 304 or 316L #2 150 / 568 56 lb/25 kg 12 lb/5.4 kg
S.S.
S.S.
2” ANSI or DIN Flange 2” NPT or 2" BSPTr
2" NPT 75 / 284 150 PSI @ 250°F
+ Ensures no bypass of unfiltered fluid into the
effluent stream.
+
Eliminates unfiltered fluid from contaminating the clean effluent side of the housing during filter change-out
+
Reduces operator contact with the fluid
+
Significantly reduces installation time and costs
+
Ease of piping for series or parallel installation
+
Reduces capital investment since fewer filter elements are required for a given flow rate
75 / 284
Dependent upon the material of the gasket installed.
150 PSI @300°F (10.4 bar @ 149°C)
(10.4 bar @ 121°C)
80 lb/36.3 kg 8 lb/3.6 kg
44 lb/20 kg 8 lb/3.6 kg
4 lb/ 1.8 kg
5
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®
DuoFLO ASME Code Filter Housings
Minimized Dirty Fluid Chamber - the DuoFLO filter element extends to the top of the housing cover to significantly reduce the dirty fluid volume compared to conventional bag filter systems
¼” NPT Connection- for easy vent valve or pressure gauge
3 Eye Nuts - eliminate the need for special tools and allows for quick and easy filter element installation and removal
Light weight cover - remains attached to the housing and pivots open to allow easy access for filter change-out. Can be rotated for ideal pivot orientation.
304 or 316L Construction -
provides compatibility with a wide range of fluids. Shot blast exterior finish improves appearance and allows for easy cleaning
installation
O-Ring Housing Seal - to provide a positive seal between the housing and the cover when the system is in use
Double O-Ring Element Seal ­Seals the DuoFLO filter element to the top of the stand pipe (inlet) ensuring no by-pass
Support Basket - Full Support of the filter element ensures filter integrity even under the most demanding conditions. Eliminates media stretching which can open the media pores and allow larger particles to pass.
ASME Code - meets local and state design requirements for pressure vessels
Inlet Stand Pipe - directs fluid to the top of the filter housing and inlet channels of the DuoFLO filter element
Available Connections -
include 2” ANSI flange (shown), 2” NPT, 2” DIN flange, or 2” BSPTr to satisfy most common piping requirements
Dished Bottom - drains the clean liquid to the housing outlet for better product recovery and cleaner system operation
Optional Legs (shown below) -
Adjustable legs can accom­modate an inlet/outlet centerline height adjustment of up to 11 inches
In-line Bottom Inlet & Outlet - provides easy and cost effective installation by reducing the complexity of the piping scheme. Both the inlet and outlet piping have ½” NPT connections for drains, sample ports, or pressure gauge installation.
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Flange Thread Max. Min. Bolt Circle
anc
es
1DF1 35/89 20/51
13/33.2 11 ½/29.2 15/38.1 4/10.2 10 ½ / 26.7
1DF2 63/160 34/87
Inches cm Inches cm Inches cm Inches cm
1DFN1 29 1/2 74.9 40 101.6 12 30.5
5 12.7
1DFN2 43 3/4 111.1 68 1/4 173 12 30.5
The inline bottom inlet and outlet connections offer tremendous flexibility in manifolding the housings for series or parallel filtration. This concept allows for enhanced adaptability in achieving both short and long term flow and process requirements. Manifold piping systems (with and without valves) are available for installing DuoFLO housings in duplex, triplex, and quadplex configurations. Consult factory for more details.
Space Required to remove element and support basket
Space Required to remove element and support basket
B
A
CUNO DuoFLO
C
E
5/16” diameter
hor hol
B
A
INLET
D
D
OUTLET
C
7
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DuoFLO®Filter System Accessories
The following accessories are available for use with the DuoFLO filter system:
DuoFLO Element Installation Tool
DuoFLO Element Removal Tool
Coatings
Industrial
Chemical
Petrochemicals
Food & Beverage
Pharmaceutical
Electronics
Water Treatment
Element Insertion Tool (Part # 60300-31): Constructed from 316
stainless steel, this tool facilitates insertion of DuoFLO elements into
DuoFLO Element Hold Down Spring
the support basket. The tool is designed with curved ends to ensure no damage is done when inserted into the element.
Element Removal Tool (Part # 74132-31): Constructed from 316 stainless steel, this tool facilitates removal of DuoFLO elements from the support basket. The tool is designed with an easy-to grip handle and locking tabs for proper support of element.
Element Hold Down Spring (Part # 64254-31): Constructed from
DuoFLO Magnet
316 stainless steel, this spring assembly ensures the DuoFLO element is properly seated in side entry housings to prevent fluid bypass.
Magnet Assembly (Part # 60376-01): Constructed using 12,000 gauss strength magnets inserted into a 304 / 304 L Stainless steel tube, this magnet assembly provides for improved capture of metallic fines from fluid streams. This assembly is designed for easy insertion and removal and is fully supported when inserted into a DuoFLO element.
DuoFLO®Filter Applications
Electrodeposition Paper Coatings Printing Ink Trade Paint Can Coatings Automotive Paint Coil Coatings Dispersions Architectural Paint Parts Washing Ground Water Lubricants Pulp & Paper Waste Water Machine Tool Coolants Cooling Water Hydraulic Fluids Transformer Oil Acids Fuels Silicones Chemicals Catalyst Recovery Aerosol Products Process Water Resins Mineral Oil Alcohols Alkalines Waxes Glycols Esters Solvents Fuel Additives Distillation Fuels Glycols Enhanced Oil Recovery Injection Fluids Lube Oils Amines Vegetable Oil Fruit Juice Liquid Sugar Syrups Beer Bottled Water Edible Oils Honey Gelatin Soft Drinks High Fructose Corn Syrup Ready to Drink Tea Wine Vinegar Sports Drinks Spirits Catalyst Recovery Solvents Water Systems Vitamin Extracts Active Pharmaceutical Ingredients Opthalmics Bulk Pharmaceutical Chemicals Carbon Removal Lotions OTC Solutions Etching Baths CD’s / DVD’s Solvents Process Water / RO Prefiltration Photochemicals Printed Circuit Manufacturing Cooling Water Well Water Waste Water Process Water Ground Water RO Prefiltration
Adhesives Resins
8
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CUNO offers a complete line of DuoFLO 316 stainless steel support baskets (many available in 316 L S.S.) for use in existing bag filter housings or in the DuoFLO filter housing. The DuoFLO element utilizes a basket for proper element support. The DuoFLO filter basket has two concentric stainless steel cylinders to support both the inner and outer filter element sleeves. This design ensures media integrity and consistent effluent quality. DuoFLO baskets include the optimum combination of strength and open area to provide proper media support, excellent flow characteristics, and minimal pressure drop.
The DuoFLO filter support basket ordering guide (below) cross references the competitive filter bag housing manufacturer and model to the correct DuoFLO support basket needed to upgrade to the DuoFLO filter element.
***
# # ) )
Filtrek BMB 1 - 17 Side #2 N/A N/A 60382-35 N/A
FSI FS - 85 & Up 1 - 24 Side #2 N/A N/A 60382-38**** N/A FSI FSP - 40 1 Side #1 N/A N/A 60382-32**** N/A
FSI FSP - 85 & Up 1 - 24 Side #2 N/A N/A 60382-31**** 60382-39 Filtration Systems 112 1 Over the top #1 60343-31 N/A 60382-32 N/A Filtration Systems 122 1 Over the top #2 60343-31 N/A 60382-31 60382-39
GAF/AFFCO RB(1,2 or 4) 1 - 4 Over the top #1 60339-31xx* N/A 60382-32 N/A GAF/AFFCO RB(1,2 or 4) L 1 - 4 Over the top #2 60339-31xx* N/A 60382-31 60382-39 GAF/AFFCO RB1 SE 1 Side #1 N/A 60334-3x442** 60382-34 N/A GAF/AFFCO RB1 L-SE 1 Side #2 N/A 60334-3x442** 60382-33 N/A GAF/AFFCO RB(2 - 12)C2L 2 - 12 Side #2 N/A 60334-3x442** 60382-33 N/A
Hayward POLYLINE FLT 4202 1 Side #2 60362-31 N/A 60382-31 60382-39 Hayward TOPLINE TBF 0101 1 Over the top #1 N/A N/A 60382-32 N/A Hayward TOPLINE TBF 0102 1 Over the top #2 N/A N/A 60382-31 60382-39 Hayward MAXILINE MBF 3 - 24 Side #2 N/A N/A 60382-31 60382-39
Hayward MAXILINESEMB 3 - 24 Side #2 N/A N/A 60382-31 60382-39 Krystil Klear M88302 (OEM) 1 Side #2 60346-31 N/A 60382-31 60382-39 Krystil Klear L8815 1 Side #1 N/A N/A 60382-32 N/A Krystil Klear L8830 1 Side #2 N/A N/A 60382-31 60382-39
Parker SB1 or 4 1 or 4 Side #1 60340-31xx* N/A 60382-32 N/A
Parker SB1 or 4 1 or 4 Side #2 60340-31xx* N/A 60382-31 60382-39 Rosedale 8 - 15 1 Side #1 N/A N/A 60382-36 N/A Rosedale D8 - 15 (Duplex) 2 Side #1 N/A N/A 60382-36 N/A Rosedale 8 - 30 1 Side #2 N/A N/A 60382-35 N/A Rosedale D8 - 30 (Duplex) 2 Side #2 N/A N/A 60382-35 N/A Rosedale 16 - 48 2 - 23 Side #2 N/A N/A 60382-37 N/A Strainrite U F1-180 1 - 12 Side #2 N/A N/A 60382-31 60382-39
Gasket GAF/AFFCO Parker Gasket Part Number
Nitrile 60339-31GA 60340-31GA Nitrile 60334-36442
EPR 60339-31GB 60340-31GB EPR 60334-37442
Viton 60339-31GC 60340-31GC Viton 60334-38442
TEV 60339-31GD 60340-31GD TEV 60334-39442 *** Hold down Spring (Part # 64254-31) required for all side entry one bag housings **** Seal Ring & FSI installation tool (Part # 74132-31) required
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DuoFLO®Filter Element Ordering Guide
Filter
Designation
DFG - DuoFLO
Graded-Porosity
Nominal Removal
Rating (Microns)
001 - 1µm PP - Polypro/Polypro 1 - 14.3 nominal C - Open (DuoFLO
005 - 5µm EE - Polyester/Polyester 2 - 27.8 nominal 010 - 10µm EP - Polyester/Polypro R - Closed (Standard Bag 025 - 25µm FE - Polyester/Polyester** 050 - 50µm
100 - 100µm
200* - 200µm
* Available in single layer polyester material (Code EE) only ** 21CFR Materials, available in 1, 5, and 10 µm only
(Media/Plastic Components)
Material
Element
Length
(inches)
DuoFLO AMSE Code Filter Housing Ordering Guide
Number
Around
1 = 1 Around DF
DuoFLO Size
1 = #1 Size B = 304 SS 1 = 2" ANSI Flange L = Legs* GA = Nitrile**
2 = # 2 Size C = 316L SS 2 = 2" NPT N = No legs GB = EPR
Housing
Material
Connection Type
3 = 2" DIN Flange GC = Viton
4 = 2" BSPTr
Support
Legs
Connection Style
Housings
Housings)
Gasket
Material
* Housing Legs (when ordered separately) 98848-01 ** Limits housing operating temperature to 250°F (121°C)
DuoFLO DFN Filter Housing Ordering Guide
Number
Around
1 = 1 Around DFN
DuoFLO Size
1 = #1 Size B = 304 SS 2 = #2 Size C = 316L SS GB - EPR
Housing Material
Connection Type
DuoFLO Filter Accessories
DuoFLO Element Installation Tool Part # 60300-31
DuoFLO Magnet Part # 60376-01
DuoFLO Element Removal Tool Part # 74132-31
2 = 2" NPT
Support
Legs
C - Mounting
Clips
Gasket
Materials
GA - Nitrile
GC - Viton
DuoFLO Element Hold Down Spring Part # 64254-31
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CUNO MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Since a variety of factors can affect the use and performance of a CUNO product in a particular application, some of which are uniquely within the user’s knowledge and control, user is responsible for determining whether or not the CUNO product is fit for a particular purpose and suitable for user’s method of application
.
If the CUNO product is proved to be defective, THE EXCLUSIVE REMEDY, AT CUNO’S OPTION, SHALL BE TO REFUND THE PURCHASE PRICE OR TO REPAIR OR REPLACE THE DEFECTIVE PRODUCT. CUNO shall not otherwise be liable for loss or damages, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including, but not limited to, contract, negligence, warranty or strict liability.
WARRANTY
Seller warrants its equipment against defects in workmanship and material for a period of 12 months from date of shipment from the factory under normal use and service and otherwise when such equipment is used in accordance with instructions furnished by Seller and for purposes disclosed in writing at the time of purchase, if any. Any unauthorized alteration or modification of the equipment by Buyer will void this warranty. Seller's liability under this warranty shall be limited to the replacement or repair, F.O.B. point of manufacture, of any defective equipment or part which, having been returned to the factory, transportation charges prepaid, has been inspected and determined by the Seller to be defective. THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EITHER EXPRESSED OR IMPLIED, AS TO DESCRIPTION, QUALITY, MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE OR USE, OR ANY OTHER MATTER. Under no circumstances shall Seller be liable to Buyer or any third party for any loss of profits or other direct or indirect costs, expenses, losses or consequential damages arising out of or as a result of any defects in or failure of its products or any part or parts thereof or arising out of or as a result of parts or components incorporated in Seller's equipment but not supplied by the Seller.
a 3M company
CUNOIncorporated
400 Research Parkway
Meriden, CT 06450, U.S.A.
Tel:(800) 243-6894
(203) 237-5541
Fax:(203) 630-4530
www.cuno.com
CUNO and DuoFLO are trademarks of 3M Company used under license. © 2007 3M Company. All Rights Reserved LITCDUOF1.1110p
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