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PTFE Membranes

PTFE Membranes

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.

Chemical Compatibility Chart PDF

Membrane Disc Filter Resource Documents

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.