PTFE vs. EPDM Diffuser Membranes

By: Tom Frankel
Post Date: November 13th 2008

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This is a photo of an SSI PTFE membrane that operated under septic conditions:

SSI PTFE membrane

Here is another one, also in septic conditions:

Septic conditions

This is a photo of an SSI EPDM membrane and an SSI PTFE membrane (1st generation) at a dairy plant in Quebec, Canada, both after 1 year of operation.

SSI EPDM membrane

This is a photo of a competitor’s EPDM membrane that operated under septic conditions:

Competitor's EPDM Membrane

After looking at these photos, it should be quite clear what is the purpose of a non-stick barrier layer on an elastomeric diffuser membrane.

SSI manufactures patent-pending PTFE and fEPDM fine bubble and coarse bubble membrane diffusers.