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Polyethersulfone (PES) Membrane Filters

Polyethersulfone (PES) membrane is hydrophilic, allowing fast wetting and high flows. This versatile membrane is used in a wide variety of industries for an equally wide variety of applications.

PES Versions

Critical Process Filtration offers THREE versions of membranes based on PES.

  • Highly asymmetric PES - allows high flows with low pressure drops. The highly asymmetric structure also allows the membrane to efficiently capture a large amount of different size particles throughout the membrane matrix while still providing a sharp retention cutoff.
  • Symmetric PES – the uniform pore structure through the depth of the membrane allows high flows with the added benefit of inhibiting the grow-through of any organisms captured by the filter.
  • High Capacity PES – a thick membrane with high capacity for holding particles and microorganisms. Ideal for prefiltration and bioburden reduction to protect final filters, especially in high-protein solutions or when liquids contain elements that tend to bind to filter media.

Services

Critical Process Filtration partners with users to develop cost-effective filtration systems and perform application-specific tests for filter performance and safety. We provide complete documentation suitable for validation reviews by regulatory authorities. We also offer other Services to help you choose and verify your filter performance.


Selection Table

The product selection table contains information on all three versions in their various grades and cartridge, capsule and flat disc forms. Click on the Download PDFin the appropriate location to download a data sheet for the filter media or product that fits your needs.

Highly Asymmetric Membrane Media

Media Code
Grade
Cartridge
Capsule
Disc Filter
Pore Sizes (microns) Features
PPS
Double Layered Pharmaceutical Grade
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0.03, 0.1, 0.22, 0.45, 0.65 Double-layered, highly asymmetric, hydrophilic PES membrane for high flow rates and low adsorption
BPS
Biopharmaceutical Grade
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0.03, 0.1, 0.22, 0.45, 0.65, 0.8, 1.0, 1.2 Highly asymmetric, hydrophilic PES membrane for high throughput bioburden reduction with low adsorption.
VPS
Dual Layered Wine & Beverage Grade
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0.03, 0.1, 0.22, .045, 0.65 Highly asymmetric, hydrophilic PES membrane for high flow rates in beverage bioburden removal and low adsorption of flavor elements.
DPS
Double Layered General Service Grade
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0.03, 0.1, 0.22, .045, 0.65 Double- layered, highly asymmetric, hydrophilic PES membrane for high flow rates.
FPS
Food & Beverage Grade
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0.03, 0.1, 0.22, 0.45, 0.65, 0.8, 1.0, 1.2 Highly asymmetric, hydrophilic PES membrane for high throughput bioburden reduction in food ingredients with low flavor element adsorption.
GPS
General Service Grade
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0.03, 0.1, 0.22, 0.45, 0.65, 0.8, 1.0, 1.2 Highly asymmetric, hydrophilic PES membrane for high flow rates and efficiency in ink jet ink and other specialty chemicals.

Symmetric Membrane Media

Media Code
Grade
Cartridge
Capsule
Disc Filter
Pore Sizes (microns) Features
EPS
Electronics Grade
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0.03, 0.1, 0.22, 0.45 Symmetric, hydrophilic PES membrane for high throughput of ultrapure water and chemicals with very low extractables.
WPS
Water Grade
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0.03, 0.1, 0.22, 0.45 Symmetric, hydrophilic PES membrane for high throughput of process and purified waters.

High Capacity

Media Code
Grade
Cartridge
Capsule
Disc Filter
Pore Sizes (microns) Features
BCWPS
Biopharmaceutical Grade
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0.2 single layer, 0.5 sngle layer, 0.5/0.2 dual layer High capacity membrane with single or dual layer configurations for bacteria and particulate reduction, low product adsorption and protection of final filters
FCWPS
Food & Beverage Grade
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0.2 single layer, 0.5 sngle layer, 0.5/0.2 dual layer High capacity membrane with single or dual layer configurations for bacteria and particulate reduction, low product adsorption and protection of final filters
GCWPS
General Service Grade
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0.2 single layer, 0.5 sngle layer, 0.5/0.2 dual layer High void volume membrane for particulate reduction with high dirt holding capacity in a wide range of liquids.

To estimate the number of filters you will need for your application, use our unique sizing tools.

Contact Critical Process Filtration if you have questions on any of our products or services.