Chemical Resistance


Rigorous internal and independent testing protocols have proven POREFLON to have superior chemical resistance in comparison to competing products made with ceramics or PVDF.

PTFE > Ceramics > PVDF

POREFLON PTFE is resistant to oxidation and does not degrade when exposed to virtually all chemicals, including strong alkalis and acids. The hollow fiber material is able to withstand wastewater with a PH of zero to 14 and cleaning processes using highly concentrated chemicals. After cleaning, the fibers are returned to their original performance rating.


Often, industrial waste waters contain persistent organic compounds or oil-contaminated waters that require regular cleaning with strong chemicals. The high chemical resistence of POREFLON with PTFE allow the membrane modules to maintain their effectiveness and long life despite plant needs for harsh chemical cleaning protocols.

Cleaning conditions vary depending on the quality of the waste water to be treated and the operating conditions, but standard cleaning conditions indicate Inline cleaning every 1-2 weeks and Out-of-tank cleaning every 3-6 months.

Chemical resistance translates into an extended product lifespan, ease of cleaning and general maintenance, and ultimately a reduction in plant operations and labor costs.

Ask a Sumitomo-USA representative about results from soaking and chemical cleaning tests.