PPD Prefilters

For prefiltering critical pharmaceutical and healthcare liquids.

  • Chemicals
  • Intermediates
  • Buffers
  • Medications
  • Diagnostics
  • Cell culture media
  • Ophthalmics
  • Medical device cleaning
Features and Benefits

Polypro DepthPPD is a family of filters made with pleated Polypropylene depth media for prefiltering water, chemicals and solvents. 


  • Superior retention and protect downstream filters
  • Rated at 99.9% efficiencies at indicated pore size
  • Pore sizes: 0.10 to 100 micron
  • Designed for high capacity and long life
Filtration Area
PPD filtration area
View Data Sheet for further product information:
  • Materials of construction
  • Flow rates for all pore sizes
  • Operating parameters
  • Sanitization and sterilization
  • Regulatory & compliance

PPD Filters

PPD/HT Filters

PPD Mini-Capsules

Quality Assurance

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

PPD Cartridges 

Available from 5-40 inches in length with several end connections and O-ring options.  For applications using elevated temperatures, PPD/HT Cartridges can be used in processes up to 203°F. 

PPD Cartridges        Critical Process Filtration black and white capsule with etched logo 

PPD Capsules

These filters are PPD 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. 

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

PPD Mini-Capsule

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

PPD 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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