Memtrex-MP-S (MMP-S) validatable sterilizing grade filter cartridges are designed for final sterile filtration of pharmaceutical products. Our modified polyethersulfone (PES) membrane’s asymmetric pore structure combined with extremely low protein- binding characteristics provides high throughputs.

MMP-S is the sterilization (S) Grade MMP for validation uses.This commitment by Osmonics to validation is based upon the FDA Guidelines that we “establish documented evidence of assurance that a specific process will consis- tently produce a product meeting its predetermined specification and quality attributes” (FDA, 1987). MMP-S is designed for final sterile filtration of pharmaceutical prod- ucts. The double-layer PES membranes provide low pro- tein-binding, high throughput and are 100% integrity tested.

A detailed Validation Guide is available from Osmonics to document our rigorous testing for your records and reviews.

The MMP-S filter is just one example of our strong commitment to the pharmaceutical industry. Our com- plete portfolio includes filters for every stage of process- ing, and we offer custom solutions for your unique applica- tions. Osmonics is your complete source for filters, hous- ings and other filtration equipment.

Whether you require an integrated solution or a single component for a specific application, look to Osmonics first. From one end of the filtra- tion spectrum to the other, Osmonics has a total commitment to fluid purity.


  • Sterilization (S) Grade MMP for validation uses
  • Low protein-binding
  • High throughput
  • Meets HIMA Guidelines
  • 100% integrity tested
  • Steam sterilizable
  • Meets USP 23 Class VI Plastic Test
  • Passes MEM Elution Cytotoxicity test
  • Double-layer membrane for 100% bacterial retention