Polytetrafluoroethylene - PTFE

Polytetrafluoroethylene (PTFE) - Hydrophilic or Hydrophobic

  • PTFE membranes are inherently hydrophobic; they are ideal for the filtration of nonpolar liquids and gases.
  • Very resistant to solvents as well as acids or bases.
  • Can be made more hydrophilic by flushing with alcohol, followed by water.
  • Used for filtering and de-gassing chromatography solvents.
  • Permits optimal utilization of small sample volumes.
  • Excellent chemical compatibility for filtering harsh chemicals that destroy other membrane materials.
  • Moisture barrier for venting applications and vacuum pump line protection.
  • Ideal for aerosol sampling.
  • Filter viscous organic based HPLC samples.
  • Glass microfiber prefilter raises absorption capacity and loading.
  • After pre-wetting with alcohol, may be used for fine particle removal of aqueous and mild organic solutions in Ion Chromatography.
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