Synthetic polymeric membranes that are used with the four filtration technologies (MF: MicroFiltration / UF: UltraFiltration / NF: NanoFiltration / RO: Reverse Osmosis) are produced with variety of materials.

The major resins used in membrane manufacturing include:

• Polysulfone (PSF, SOLVAY is the leading worldwide supplier of PSF with the UDEL® brand name).
• Polyethersulfone (PES, SOLVAY is a leading worldwide supplier of PES with the RADEL® A brand name).
• Polyphenylsulfone (PPSU, SOLVAY is the only worldwide supplier of PPSU with the RADEL® R brand name).
• Polyvinylidene Fluoride (PVDF, SOLVAY is a leading worldwide supplier of PVDF with the SOLEF® brand name).
• Polypropylene (PP).
• Polyethylene (PE).
• Cellulose and Cellulose acetates (CA).
• Polyamide (PA).
• Polyacrylonitrile (PAN).
• Polytetrafluoroethylene (PTFE).
• Polycarbonate (PC).
• Polymethylmethacrylate (PMMA).