BPS Bioburden Control Filters

For the retention of bioburden contamination and to reduce microbials when sterilization is not required.

  • Diagnostics
  • SVPs & LVPs
  • Water for Injection
  • Water Purification
  • Buffers
  • Sera/plasma
  • Vaccines
  • Ophthalmics
Features and Benefits

PES Dual LayerBPS is a family of biological grade, single and dual layer Polyethersulfone (PES) filters. They are designed with a single Asymmetric PES membrane and have the option of adding a High Capacity PES prefilter layer.

  • Delivers high flow across a wide pH range
  • Low binding characteristics (much lower than cellulose acetate and nylon) for filtering liquids with preservatives and proteins that can adsorb to media
  • Optional integrated prefilter saves space by eliminating separate prefilter and housing
  • Prefilter extends the life of the final filter


Filtration Area
BPS filtration area
View Data Sheet for further product information:
  • Integrity test specifications
  • Flow rates for all pore sizes
  • Materials of construction
  • Operating parameters
  • Sanitization and sterilization
  • Regulation & compliance

BPS Filters

BPS Mini-Capsules


BPS filters are validated for bioburden control using test procedures that comply with ASTM F 838-15(ae1) protocols for the determination of bacterial reduction in filters used for liquid filtration. The filters are challenged with the organisms listed below.

  • 0.03μm: Acholeplasma laidlawii 
  • 0.10μm: Brevundimonas diminuta
  • 0.22μm: Brevundimonas diminuta
  • 0.45μm: Serratia marcescens
  • 0.65μm: Saccharomyces cerevisiae

Validation Guides are available upon request.

Quality Assurance

BPS filters are 100% integrity tested. CPF filters are developed and manufactured under an ISO 9001:2015 certified Quality Management System and designed to be used in cGMP-compliant processes. 

BPS Cartridges 

Available from 5-40 inches in length with several end connections and O-ring options.  

BPS cartridge        Critical Process Filtration black and white capsule with etched logo 

BPS Capsules

These filters are BPS cartridges encapsulated in a polypropylene shell to minimize exposure to process fluids. A popular choice for single-use applications and can be disposed of easily. Sizes range from 2-30 inches in length. BPS Capsules are available pre-sterilized.

BPS capsule        Critical process black and white capsule with cutout to show cartridge etched logo 

BPS Mini-Capsule

Mini-capsules are designed for lab scale testing, process development and small batch production with a filtration area of 500 cm2. BPS Mini-Capsules are available pre-sterilized. 

BPS mini     Critical Process black and white mini capsule with etched logo


Why Choose Critical Process Filters?

Quality & Performance
  • Over 20 years of engineering and manufacturing the finest filters for critical applications. 
  • Compliance with industry standards required for your operation
  • Product optimization to meet your performance goals
  • ISO 9001:2015 certified Quality Management System
  • Appropriately rated clean room environment
  • Proven success in pharmaceutical and bioprocessing applications
Price Advantage

It's simple. Our products are very competitively priced. Learn more

Services & Support
  • Presales evaluations/recommendations by highly experienced Application Engineers 
  • Post sales support and trouble shooting
  • Testing & Analysis services (our site or yours)
  • Validation Services

Made in USA 800   90012015Large-(1)

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