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Mid adult female nurse injecting patient for renal dialysis treatment in hospital room
Solutions for Hemodialysis Applications and Processes

Specialty Polymers for Hemodialysis Membranes

Making Membranes as Efficient as Kidneys

Solvay-hemodialysis-dialyzer-application-part - cropped

The dialyzer uses tiny hollow filters that look like microscopic straws called a semi-permeable membrane made from Udel® PSU and Veradel® PESU. As blood moves inside these tubes, it comes into contact with a solution that is circulated in the space outside the hollow fibers: large molecules such as blood cells and large proteins are kept inside the membrane, but smaller molecules and biological waste like urea and water pass through the small pores of the membrane. 


Udel® PSU and Veradel® PESU: High Performance for Hemodialysis

Over 90% of all dialysis membranes used to treat chronic kidney disease are made from polysulfone (PSU) or polyethersulfone (PESU). Udel® PSU and Veradel® PESU have become the polymers of choice for these membranes.

  • Purity, Quality and Biocompatibility
    Udel® PSU and Veradel® PESU provide the purity, quality and biocompatibility needed to make membranes that filter out toxins, that are then eliminated in the used dialysis fluid, and return clean blood to kidney patients.
  • Sterilization Compatibility
    Hemodialysis Dialyzers made from Udel® PSU and Veradel® PESU are designed for single-use and are compatible with several types of sterilization methods, including steam, ethylene oxide and gamma radiation.
  • Faster, Easier Processing
    Due to their molecular structure, Udel® PSU and Veradel® PESU enable easy formation of the fine hollow fiber elements required for hemodialysis membranes. A range of narrow molecular weights with controlled viscosities makes it quicker to fine-tune dope solutions and optimize the membrane manufacturing processes.