DeltaMax PES Membrane Filter


DeltaMax PES Membrane Filter adopts the PES membrane, and the shell is made of polypropylene hard cage or stainless steel lining hot melt welding. Our Polyethersulfone membranes  (PES)  are hydrophilic and manufactured using PES pure polymer. Asymmetrical structure with high pore size, high porosity and large flux.


PES membrane removes the need for the use of surfactants to improve dampness and comes with a high flow rate and high load capacity. They are ideal for tissue culture media sterilization, life science and microbiology fluid applications, clinical, and general filtration.


This is a very versatile membrane in applications such as sample preparation and sterile filtrations. Its low protein absorption makes this the type of membrane mainly chosen for use in laboratory applications. The quality control process ensures product uniformity, filtration properties and porosity properties offered.


Features of DeltaMax PES Membrane Filter

  • High hydrophilic PES membrane, high flow rate
  • Asymmetric membrane structure
  • High dirt-holding and long service life
  • Low protein binding suit for the pharmaceutical sector
  • 100% integrity tested
  • Strong and durable for easy handling
  • Lot-to-lot consistency provides reproducible results every time
  • Low protein binding



  • Pharmaceutical product filtration
  • Protein and enzyme filtration
  • Microbiological analysis
  • Biological fluid filtration
  • Aqueous and environmental studies
  • Sterile filtration of food & beverages
  • Fine chemicals
  • Final filtration for wine, beer and another ultrapure water




Filter Media PES Membrane
Inner core & Outer Cage Polypropylene
End caps Polypropylene
Gasket EPDM/Silicone/Buna-N/Viton/Teflon
End caps type DOE, SOE (222 Flat/222 Fin/226 Flat/226 Fin)


Length 5 to 40inch
OD 2.75inch(69mm)
ID 1.3inch(33mm)

Operation Conditions

Max. Temperature ~85 ℃
Recommended DP for change-out 2.1-2.4bar

Flow Chart:

DeltaMax PES Membrane Pleated

DeltaMax PES Membrane Pleated


Order Information

BDTX -PES -5 -0020 -E -0 -P -H
Product Material Length Micron Rating O-ring Connection Inner Core Surface Treatment
DeltaMax  Membrane Pleated Cartridge Filter PES=Polyethersulfone 5=5inch

10=10inch 20=20inch 30=30inch 40=40inch









S=Silicon V=Viton T=Teflon B=Buna-N


1=222 Flat

2=222 Fin

3=226 Flat

4=226 Fin

P=PP Strength Polypropylene H=Hard Cage N=Netting



Notice: Due to filter has variety in design, please contact with BROTHER sales for more information


PES Membrane Filters are available in two porosities: 0.2µm for sterilization and complete bacterial retention and 0.45µm for particulate removal and clarification.  Both porosities are available in industry standard 13, 25, 47, and 90mm diameters.  PES Disc Filters are autoclavable and gamma-stable.


For additional information on OEM-specific applications, Brother Filtration has the product breadth and flexibility to meet your needs, as well as the quality standards to help ensure your success. Contact us to discuss application requirements, request free product samples and order products.

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