Purtrex™ Depth Filters


Longer Life & Fewer Changeouts

Osmonics has extended its patented* blown microfiber technology to meet the market requirements for a pure polypropylene depth filter with exceptional dirt-holding capability. This translates to longer life and fewer changeouts than existing string-wound or resin-bonded filters. The resulting product, Purtrex, is an exceptional value for general applications where long-life, high purity and low changeout frequency is required.


High Dirt-Holding Capacity

  • True-graded density captures particles throughout entire filter depth
  • High dirt-holding capacity means longer life and fewer changeouts which translates to money saved
  • Lower density at the surface of the filter with progressively higher density towards the center
  • No surface blinding, which reduces flow and increases filter changeouts



Pure Polypropylene Construction

  • Thermally bonded microfibers
  • Contains no wetting agents, solvents, antistatic agents or binders
  • Wide chemical compatibility
  • Incinerates to trace ash for easy disposal
  • Meets the requirements of the FDA for food and beverage contact
  • No leachables or extractables



Proven Manufacturing Process

  • Automated, consistent manufacturing process assures reliable performance and repeatable results
  • Thermal and vacuum finishing procedures eliminate potential manufacturing debris



Wide Range Lengths and Adapters

  • Standard lengths fit most housings—custom lengths can also be provided
  • Wide range of polypropylene end-adapters including gaskets, extended cores and Osmonics® patented* self-seal polypropylene springs



Markets Served

  • Food and Beverage
  • Electronics
  • Pre-Reverse Osmosis
  • Metal Finishing
  • Oil and Gas
  • Pulp and Paper
  • Fine Chemicals