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®
LifeASSURE BW
Membrane Filters for Bottled Water Service
LifeASSURE BW BLA100 filters have been
tested and certified by NSF International to
Standard 53. This standard was developed
in conjunction with the bottled water industry
to certify filter performance in removing
Cryptosporidium
meets EPA and CDC recommendations.
LifeASSURE BW filters are an effective
means of providing microbiological control in
water without the need for ozone. Ozone
can generate unwanted disinfection by-prod
ucts, such as bromate, leading the EPA to
introduce regulations restricting the level of
bromate in drinking water to <10 mg/L (10
ppb). The International Bottled Water Asso
ciation (IBWA) recommends membrane
filtration as an option in providing microbio
logical control, without the use of ozone, as
part of a “multi-barrier” approach to water
safety.
Fluid Purification
and
Giardia
cysts and
®
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LifeASSURE®BW membrane filter cartridges
are used as final filters in bottled water and
other beverage grade water requiring high retention of
Cryptosporidium,Giardia
,
heterotrophic plate count (HPC) bacteria, and
other microorganisms. Encompassing two
leading edge technologies, FlexN™ membrane
manufacture and MaxMedia™ pleating con
struction, the LifeASSURE BW series of filters
offers an unmatched combination of exception
ally high microorganism retention and long
service life.
Features Benefits
+
Multi-zone, FlexN Nylon membrane
+
Exceptionally high HPC microorganism retention
+
Extended service life
+
No disinfection by-products
NSF International
NSF International is a widely respected independent certification organization and the
accepted authority in evaluating filter claims
related to water and public health. Only
products tested and certified by NSF are allowed to carry their mark. LifeASSURE BW
BLA100 has been tested and certified by
NSF to Standard 53
for reduction of
cysts. This inde
pendent certification
assures the rigor,
reproducibility and
impartiality that the
bottled water indus
try has come to
expect from NSF.
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Tested and certified by NSF
International against ANSI/NSF
Standard 53 for the reduction of
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Cysts and material requirements only
+
MaxMedia construction providing high
membrane surface area
+
ANSI/NSF Std. 53 certified and listed
+
100% integrity tested in manufacturing
and testable by the user
+
Fast per-cartridge flow rates
+
Smaller filter housing assemblies required
+
Reliable cyst reduction as certified by the only
accredited testing body for cyst reduction
+
Ensures proper installation and operation
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FlexN™ Membrane
LifeASSURE BW membrane filters incorporate
CUNO’s advanced FlexN membrane technol
ogy*. It allows unmatched flexibility in creating
a multi-zone membrane that offers the maxi
mum in contaminant holding capacity while
providing very high per-cartridge flow rates.
The cross-section SEM photograph shows that
a single layer of LifeASSURE BW membrane
consists of an “open” zone on the upstream
side of the membrane and a “tighter” zone on
the downstream side. In effect, the open zone
acts are a prefilter by capturing larger particles
and microorganisms while the tighter zone re
tains smaller microorganisms. This multi-zone
structure eliminates the need for a dual layer
membrane or thick, fibrous filter media com
monly used in other filter cartridges. The
result? LifeASSURE BW filters provide more
membrane surface area per cartridge, faster
cartridge flow rates and longer service life.
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Microorganism Reduction
Microorganism control is a critical parameter
in preparation of quality bottled or beverage
grade water. LifeASSURE BW membrane
filters consistently exhibit a greater reduction
of microorganisms than competitive filters. In
tests conduced with
fluorescens
(a typical heterotrophic plate
count, or HPC, organism) LifeASSURE BW
BLA100 grade filters exhibited retention far
exceeding that of similarly rated filters (Table
1.).
Table 1.
Filter Average LRV*
CUNO LifeASSURE BW BLA100
Osmonics Flowtrex™ GF
Whatman VTEC
Pall AbsoLife™
Even in tests with
(considered one of the smallest bacteria)
LifeASSURE BLA020 and BLA045 grade fil
ters exhibited log reduction values (LRV)
significantly higher than similarly rated filters
(Table 2.)
Pseudomonas
6.5
0.8
1.5
0.1
Brevundimonas diminuta
,
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SEM Photograph Showing LifeASSURE BW Membrane
Cross-Section
MaxMedia™ Construction
LifeASSURE cartridge filters also feature
CUNO’s innovative MaxMedia construction for
extended service life. This design technology
maximizes the useful surface area of the filter
while maintaining proper flow paths between
media pleats. By employing as much as 50%
more effective surface
area than competitive
filters, the
LifeASSURE
BW filter pro
vides lower
pressure
drops, longer
service life
and lower
overall filtra
tion costs.
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Table 2.
Filter Average LRV
CUNO LifeASSURE BW BLA020
Millipore Milligard
CUNO LifeASSURE BW BLA045
Millipore Milligard CWSC
* LRV =log10 number of organisms in/number of
organisms out.
Scanning Electron Micrograph (SEM) of
®
CWSS
. Magnification: 8,400X.
parvum
7.3
4.5
3.5
2.6
Cryptosporidium
Optimized Service Life
As the data in Chart 1 and Tables 1 & 2
demonstrate, LifeASSURE BW cartridges
are designed to provide both enhanced ser
vice life without sacrificing effluent quality or
microorganism retention. A laboratory study
was conducted to measure the relative ser
vice life of filters marketed as cyst reducing
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using a model contaminant (kaolin clay and an
bso
e
(
)
hydrous sodium pyrophosphate at 10 ppm) to
induce plugging. Filters were tested side by
side at a constant flow rate of 3 GPM. Filter
service life was measured until a terminal dif
-
ferential pressure of 20 psid was observed.
100
90
80
70
60
50
40
30
Percent Throughput
20
10
0
CUNO
LifeASSURE BW
Chart 1. - Throughput Comparison
Whatman
VTEC
Osmonics
Flotrex
Pall
A
Lif
As the data show, LifeASSURE BW filters
lasted 56% longer than the nearest competitor,
and nearly four times longer than the competitor with the least throughput.
Cartridge Flow Rates
0.15
2
1.5
1
0.5
BLA020
BLA045
BLA065
BLA100
0.10
0.05
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Installation Integrity Test
LifeASSURE BW membrane filters are 100%
integrity tested manufacturing. An in situ in
stallation integrity test, a non-destructive
measurement of a filter’s ability to function as
intended, can be performed by the user upon
installation. Conducting an installation integ
rity test assures the user that the filter is
installed and sealed correctly in the filter
housing and is ready for service. For installa
tion integrity test procedures and values,
please consult CUNO document LITTDCO3.
Cartridge Component Material of Construction
Cage, core, end-caps,
and media support
layers
Membrane FlexN Nylon 66
Adapter support ring Polysulfone
Quality system ISO 9001 certified
Regulatory Standards
Cartridge Dimensions Dimension
Filtration surface area 11 ft
Outside diameter 2 ¾” (7 cm) nominal
Length
Operating Parameters Specification
Maximum operating
temperature
Maximum differential
pressure
bar
Hot water sanitation 30 min @180°F (80°C)
Steam sterilization 30 min @250°F (121°C)
Chemical
cleaning/sanitizing
Installation integrity test
Polypropylene
FDA CFR21 listed materials of
construction
USP Class VI tested
NSF Standard 53 certified
(BLA100)
2
(1 m2)
Nominal 10, 20, 30 & 40 inches
(25, 51, 76, and 102cm)
180°F(80°C)
Forward: 80 psid (5.5 bar) @
75°(25°C)
25 psid (1.7 bar) @
180°F(80°C)
Reverse: 50 psid (3.4 bar) @
75°(25°C)
Caustic solutions: consult
literature: LITTDBA2
Peracetic acid based solutions:
consult literature: LITTDBA2CL
Consult CUNO for appropriate
values for specific filter
housings in field use.
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Differential Pressure (psid)
0
2468100
Flow Rate (gpm)
0
10
5
20 30
15
25
35
Flow Rate (lpm)
Graph 1. - LifeASSURE BW Flow Rates
Differential Pressure
Flowtrex is a trademark of Osmonics,Inc., VTEC is a trade
mark of Whatman, PLC., and AbsoLife is a trademark of Pall
Corp.
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LifeASSURE®BW ANSI/NSF Standard 53 Certified Configuration Ordering Guide
Cartridge
Grade
BLA 100 - 1.0 micron
Removal
Rating
Configuration
B - Pleated
MaxMedia™
Configuration
Length
Inches
01 - 10”
02 - 20”
03 - 30”
04 - 40”
B - 226 O-ring & Spear (Code 7)
C - 222 O-ring & Spear (Code 8)
F - 222 O-ring & Flat Cap (Code 3)
J - 226 O-ring & Flat Cap
LifeASSURE®BW Filter Cartridge Ordering Guide
Cartridge
Grade
BLA
Removal
Rating
020 - 0.20 micron
045 - 0.45 micron
065 - 0.65 micron
080 - 0.80 micron
Configuration
B - Pleated
MaxMedia™
Configuration
Length
Inches
01 - 10”
02 - 20”
03 - 30”
04 - 40”
B - 226 O-ring & Spear (Code 7) A - Silicone
C - 222 O-ring & Spear (Code 8) B - Fluorocarbon
D - Double open end (10” Length) C - EPR
E - Double open end (9 ¾” Length) D - Nitrile
F - 222 O-ring & Flat Cap (Code 3) H - Clear Silicone*
J - 226 O-ring & Flat Cap
Your local CUNO distributor is:
End-modification
End-modification
Gasket/O-ring
Material
D - Nitrile
Gasket/O-ring
Material
* O-Ring Only.
Seller warrants its equipment against defects in workmanship and ma
terial 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 f
poses disclosed in writing at the time of purchase, if any.
Any unauthori
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 de
zed alteration or modification of the equipment by
or pur
Service Worldwide
Visit us at www.cuno.com
CUNO Pacific Pty Ltd
140 Sunnyholt Road
Blacktown, NSW 2148
Rua Amf Do Brasil 251
18120 Mairinque-Sp
Australia
CUNO Latina Ltda
Brazil
Wihl-Th-Römheld-Str.32
19 Avenue de la Sablière
BP 81 - 94372 Sucy en Brie Cedex
CUNO GmbH
55130 Mainz
Germany
CUNO Europe SA
ZI
de la Sablière
France
20032 Cormano (Mi)
Hodogaya Station
1-7 Iwai-cho, Hodagaya-ku
Yokohama 240 Japan
WARRANTY
termined 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 re
sult 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 incorpo
-
rated in Seller’s equipment but not supplied by the Seller.
CUNO Srl
Via Zara, 38
Italy
CUNO K.K.
Building 6F
An IBWA Bottler (Supplier) Member
CUNO Filtration Asia Pte Ltd
18 Tuas Link 1 (3 Floor)
21 Woking Business Park
Woking, Surrey GU215JY
rd
Singapore 638597
CUNO Ltd
Albert Drive
United Kingdom
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Fluid Purification
CunoIncorporated
400 Research Parkway
Meriden, CT 06450, U.S.A.
Tele:(800) 243-6894
(203) 237-5541
Fax:(203) 238-8977
Ó CUNO INCORPORATED, 2002 - ALL RIGHTS RESERVED LITLABW1NSF.1110p
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