Polytetrafluoroethylene (PTFE) membranes consists of a pure PTFE tortuous pore structure. PTFE membranes are available supported or unsupported. The laminated membranes are thicker for easy handling. These filters are chemically and biologically inert, stable up to 260°C (500°F) and will withstand most concentrated acids and bases.
PTFE membrane filters are naturally hydrophobic, they are very useful for aerosol sampling, air venting, and gas filtration, especially in environments also containing water vapor. For filtering aqueous solutions, PTFE requires pre-wetting with alcohol to establish flow with reasonable pressure differentials.
Our PTFE Membranes Selection
PTFE Laminated Membrane Filters
Sterlitech PTFE membrane filters contain a membrane made of pure PTFE laminated onto a polypropylene non-woven layer.
PTFE Unlaminated Membrane Filters
Pure PTFE unsupported membrane filters.
Aspire Laminated ePTFE Membranes
Sterlitech's selection of Aspire laminated ePTFE filters are manufactured from expanded polytetrafluoroethylene and supported by with either polyester or polypropylene.
Advantec Unlaminated PTFE Hydrophilic Membranes
Advantec's line of unsupported, hydrophilic, pure PTFE membranes are ideally suited for use in HPLC separations and other applications involving mixtures of aqueous and organic solvents.