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Sterlitech
PTFE (Teflon®) Unlaminated Membranes
Sterlitech PTFE (Teflon
® ) polytetrafluoroethylene membrane consists of a pure PTFE
tortuous pore structure. PTFE membranes are unsupported. The larger
pore sizes 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.
The unlaminated filters
are compatible with strong acids, aggressive solvents and high temperatures,
which can soften the polypropylene support of laminated Sterlitech
PTFE. These filters are ideal for applications requiring stringent
temperatures or chemicals without adding particulates to the filtrate.
In addition, since Sterlitech
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.
Thickness:
0.22 µm is 50 µm thick
5.0 µm is 25 µm thick
10.0 µm is 250 µm thick
The laminated smaller pore
sizes are available here.
Features
and Benefits:
- Naturally highly hydrophobic
- Compatible with high temperatures, strong acids and aggressive
solutions
- Chemically and biologically inert
- Superior chemical resistance
- USP XXI Class VI approved
- Can withstand high temperatures
Applications:
- Filtration of strong acids and aggressive solutions
- Venting applications
- Phase separations
- Aerosol samplings
- High temperatures
PTFE (Teflon®) Unlaminated
Membrane Ordering
Information.
PTFE (Teflon®) Laminated
Membrane Home Page.
PTFE (Teflon®) Laminated
Membrane Ordering Information.
Membrane Filters Home
Page.
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