Data Sheet PIMEMBRAGPEN

Pall® Membralox® GP
Ceramic Membranes withLongitudinal Permeability Gradient
Efficient control of microfiltration regime
for higher performances
Description
The Pall Membralox GP membrane is designed for
optimum soluble macromolecules transfer across themicrofiltration membrane.
In conventional microfiltration conditions, the natural pressure
drop creates asymmetric transmembrane pressure (TMP) fromthe inlet to the outlet of the flow channel.
To correct this TMP decrease, Membralox GP membranes
have a longitudinal permeability gradient built into the support
structure without modification of the filtration layer. This design
ensure a stable microfiltration regime all along the membrane

Key Features• Precisely calibrated flux
• Controlled selectivity all along the membrane• Hydrodynamically optimized• Proven long operational life
• Meet the requirements for food usage1• Fitted in standard housings• Uniflow directional membranes• Customized membrane configurations can also be
proposed for the most stringent applications

Comparison of flux profiles
in standard crossflow microfiltration andMembralox GP crossflow microfiltration
Traditional
Microfiltration
Permeateflux profileApplications• Macromolecules fractionation, standardizationand purification• Microorganisms removal• Clarification, defatting

Membralox GP
Microfiltration

Polarization layer
Retentate

Retentate
Membrane

Increased Productivity• Significant increase in yield• Extended shelf life of filtered solutions• Selective separations between macromolecules• Selective fractionation of complex products• Reliable performances, longer service life,
longer processing times

Longitudinal permeability
gradient
Filtering layer
Intermediate
layer(s)SupportCross section view of Membralox ceramic
membrane (x 1010)

Technical Information

EP3730EP1940AA
B

B

A = 28 mm
B = 31 mm

A = 28 mm
B = 31 mm
Membralox SD Modules

Pall Membralox GP ceramic membranes configurations

Membralox SD 3-A modules

GP Membrane TypeEP3730EP1940Channel Diameter (mm)34ModuleType

No. ofMembrane
Membranes TypeSurface Retentate Connections (RC)Area (m2) Permeate Connections (PC)

Number of channels

37190.35

0.24

M-1P3730
M-1P1940

1

Filtration surface area (m2)EP3730EP19400.35
0.24

RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets

Length (mm)10201020

M-3P3730M-3P1940

3EP3730
EP19401.05
0.72

RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets

M-7P3730
M-7P1940

7EP3730
EP19402.45
1.68

RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets

M-19P3730
M-19P1940

19EP3730
EP1940

6.65
4.56

RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets

M-37P3730
M-37P1940

37EP3730
EP194012.95
8.88

RC: Weldable flanges/3-A gaskets
PC: Weldable ferrules/3-A gaskets

Membralox GP membranes pore sizes and calibration rangeMicrofiltration

Pore size

Calibration

1.4 µm, 0.8 µm

500 l/h.m2

0.1 µm, 100 nm

100 l/h.m2

Other pore sizes and calibration available on request.
1Membralox HCS Modules

Construction of wetted materials : 316L SS, ceramic, EPDM, FPM

The membranes based on high purity alumina are certified for use incontact with food fluids by Commission Directive 2005/31/EC.
All membrane components are made from materials that our suppliers
state meet the requirements for food contact use:
Alumina and titania are GRAS. Zirconia layers on alumina support
are listed in 21 CFR Sect.177.2910.

Membralox HCS 3-A modules
ModuleTypeNo. ofMembrane
Membranes TypeSurface Retentate Connections (RC)Area (m2) Permeate Connections (PC)

M-60P3730
M-60P194060

2114.40

EP3730EP1940

RC: Weldable flanges/O-ring gaskets
PC: Weldable ferrules/3-A gaskets

Construction of wetted materials : 316L SS, ceramic, PTFE, FPM
The limits of use of Membralox modules are determined mainy by typeof housing or gasket materials. Based on valuable pilot and test data,
our Scientific and Laboratory Services can provide advice in selectingthe best membrane and module configuration to match yourprocess requirements.

Pall Industrial
New York - USA
888 873 7255
+1 516 484 3600
+1 516 484 3216

Visit us on the web at www.pall.com
toll free (US only)
telephone
fax

Portsmouth - UK
+44 (0)23 9230 2374 telephone+44 (0)23 9230 2509 fax
processuk@pall.com

Pall Corporation has offices and plants throughout the world in locations including:
Argentina, Australia, Austria, Belgium, Brazil, Canada, China, France, Germany, India,Indonesia, Ireland, Italy, Japan, Korea, Malaysia, Mexico, the Netherlands, New Zealand,Norway, Poland, Puerto Rico, Russia, Singapore, South Africa, Spain, Sweden, Switzerland,Taiwan, Thailand, United Arab Emirates, United Kingdom, United States, and Venezuela.
Distributors are located in all major industrial areas of the world.
Because of developments in technology, these data or procedures may be subject to change. Consequently,
we advise users to review their continuing validity annually. Part numbers quoted above are protected by theCopyright of Pall Europe Limited.
, Pall and Membralox are trademarks of Pall Corporation.
Filtration. Separation. Solution is a service mark of Pall Corporation.
® indicates a trademark registered in the USA.
© Copyright 2007, Pall Corporation.

July 2007. Printed in England. PIMEMBRAGPEN