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  5. Membralox® GP Ceramic Membranes with Longitudinal Permeability Gradient
Membralox® GP Ceramic Membranes with Longitudinal Permeability Gradient product photo Primary L

Membralox® GP Ceramic Membranes with Longitudinal Permeability Gradient

Efficient Control of Microfiltration
Regime for Higher Performances

The Pall Membralox GP membrane is designed for optimum soluble macromolecules transfer across the microfiltration membrane.

In conventional microfiltration conditions, the natural pressure drop creates asymmetric transmembrane pressure (TMP) from the 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.

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

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

1The membranes based on high purity alumina are certified for use in contact 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.
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Description

Efficient Control of Microfiltration
Regime for Higher Performances

The Pall Membralox GP membrane is designed for optimum soluble macromolecules transfer across the microfiltration membrane.

In conventional microfiltration conditions, the natural pressure drop creates asymmetric transmembrane pressure (TMP) from the 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.

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

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

1The membranes based on high purity alumina are certified for use in contact 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.

Specifications

Comparison of Flux Profiles in Standard Crossflow
Microfiltration and Membralox GP Crossflow Microfiltration


 

Pall Membralox GP Ceramic Membranes Configurations


 
GP Membrane Type EP3730 EP1940
Channel Diameter (mm) 3 4
Number of channels 37 19
Filtration surface area (m2) 0.35 0.24
Length (mm) 1020 1020

Membralox GP Membranes Pore Sizes and Calibration Range

  Pore size Calibration
Microfiltration 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.

Membralox SD 3-A Modules
Membralox SD 3-A Modules

Module Type No. of Membranes Membrane Type Surface Area (m2) Retentate Connections (RC)
Permeate Connections (PC)
M-1P3730
M-1P1940		 1 EP3730
EP1940		 0.35
0.24		 RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets
M-3P3730
M-3P1940		 3 EP3730
EP1940		 1.05
0.72		 RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets
M-7P3730
M-7P1940		 7 EP3730
EP1940		 2.45
1.68		 RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets
M-19P3730
M-19P1940		 19 EP3730
EP1940		 6.65
4.56		 RC: Weldable collars/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets
M-37P3730
M-37P1940		 37 EP3730
EP1940		 12.95
8.88		 RC: Weldable flanges/ 3-A gaskets
PC: Weldable ferrules/3-A gaskets
Construction of wetted materials : 316L SS, ceramic, EPDM, FPM

Membralox HCS 3-A Modules
Membralox HCS 3-A Modules

Module Type No. of Membranes Membrane Type Surface Area (m2) Retentate Connections (RC)
Permeate Connections (PC)
M-60P3730
M-60P1940		 60 EP3730
EP1940		 21
14.40		 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 type of housing or gasket materials. Based on valuable pilot and test data, our Scientific and Laboratory Services can provide advice in selecting the best membrane and module configuration to match your process requirements.

Applications

  • Macromolecules fractionation, standardization and purification
  • Microorganisms removal
  • Clarification, defatting

Type

Ceramic Filters

Use

Clarification, Concentration, Polishing, Recovery, Separation

Ordering Information

For ordering information, please contact Pall.

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