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BorsoPes Biological+

Double Layer Polyethersulphone Membrane Cartridge Filters.

The BorsoPes-Biological+ microbial rated duo layer membrane filter cartridges has been developed and manufactured for the filtration of liquids in the pharmaceutical, biotechnology and other critical applications. BorsoPes-Biological+ utilises a naturally hydrophilic polyethersulphone (PES) membrane with a mirrored asymmetric pore structure. The cartridge’s unique built in prefiltration membrane layer provides longer life and higher throughput. BorsoPes-Biological+ cartridges are constructed in a clean room under tightly controlled conditions using advanced, highly specialised machinery. 

BorsoPes Biological+ membrane cartridges are 100% integrity tested during manufacture by the forward flow diffusion test method.

Typical Applications

  • Pure water Supply 
  • Biopharmaceuticals 
  • Ophthalmic solutions
  • APIs
  • LVPs
  • Beverages
  • Pure water supply


Materials of Manufacture​  
Pre-Filter media Polyethersulphone
Final Filter media Polyethersulphone
Membrane support Polypropylene
Irrigation mesh (support) Polypropylene
Drainage Layer Polypropylene
Inner core Polypropylene
End fittings Polypropylene
Outer Support Polypropylene
Support ring Stainless steel
Cartridge Dimensions  
Diameter 70mm (2,8'')
Length 254mm (10”)
  508mm (20”)
  762mm (30”)
  1016mm (40”)
Rating 99,98% (beta 5000)
Micron 0.2, 0.45, and 0.65 micron
Doe Double open end
Code 3 Single open end with Flat closed and external 222 o-rings
Code 7 Single open end with Fin end, 2 locking tabs and external 226 O-ring
Code 8 Single open end with fin end and external 222 O-rings
  Many more adapters available on request.
Cartridge Treatment  
Standard Cleand and Flushed with pyrogen-free water. 
Rinsed Ultra-clean, pulse flushed to give a system resistivity of 18MΩ.cm
  Ethylene Propylene
FEP Encapsulate Viton
FEP Encapsulate Silicon
Additional information  
  All BorsoPes cartridges and seals are approved according to:

FDA 21 CFR 177
EC Directive 1935/2004
USP class VI


Integrity testing

Each BorsoPes-Biological module of every cartridge is individually integrity tested using the diffusive flow test, which correlates to the HIMA and ASTM F838-05 bacterial challenge test. Non-destructive integrity test, such as pressure hold, Diffusive flow and Bubbel point, can be performed by costumers. Procedural details are available from Van Borselen Filter the Netherlands. 

Replacement for

The BorsoPes-B+ is a replacement for: 

Van Borselen Filters
Argonstraat 66
2718 SN Zoetermeer
079-341 23 14
ma-vr 08:30-17:00
KvK-nummer: 27103715

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