Fumasep FAP-330-PE

Brand: FuMA-Tech
Product Code: 34010056

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Please note that this material has been discontinued and we are completely out of stock.

Fumasep FAP-330-PE is a fluorinated anion-exchange membrane - reinforced with low resistance, high blocking capability of vanadium ions, and high stability in acidic environment.

Fumasep FAP-330-PE membrane comes in either a 10cm x 10cm or 20cm x 30cm size sheet.

Fumatech membranes are highly sensitive to differences in humidity and moisture content. Therefore the membranes can vary +/- 0.5cm from the original cut sizes. Also due to this sensitivity the manufacturer expects wrinkles to form, however soaking the membranes in deionized water will return the membranes to the full size planar state according to the manufacturer.

Fumasep FAP-330-PE Features:

Applications: Redox-Flow Battery, e.g. Vanadium-Redox-Flow Battery (VRB), using aqueous acidic conditions. Another application that can benefit greatly from this membrane is non-aqueous redox flow batteries that utilize organic solvents such as acetonitrile, etc. The dimension change or swelling of the membrane for non-aqueous redox flow battery applications would predominantly depend on the chemical composition of the electrolyte used. Mechanically reinforced fluorinated anion exchange membranes would demonstrate increased mechanical stability and lower solvent mediated crossover compared to non-reinforced counterparts for non-aqueous redox flow battery applications.
Type: Anion Exchange Membrane
Operation Range: Acidic environment pH < 4, at pH > 6 the material has low ionic conductivity. The material is not stable in caustic environment (pH > 11). General temperature range is room temperature to 50 °C.
Thickness (dry): 24 – 32 micrometers (0.94 - 1.25 mil)
Sizes: 10cm x 10cm, 20cm x 30cm

Fumasep FAP-330-PE Technical Specification Sheet


The membrane is delivered on the transparent PET foil. The membrane is ready to use.


Keep membrane package closed / sealed when unused. Unpack membrane only for direct use and process immediately after opening. Store, handle and process the membrane in a clean and dust-free area. Use only new and sharp knives or blades, when cutting the membrane. Always wear protective gloves when handling the membrane. Handle with care, be sure not to puncture, crease or scratch the membrane, otherwise leaks will occur. All surfaces in contact with the membrane during handling, inspection, storage and mounting must be smooth and free of sharp projections.

Pre-Treatment and Conditioning:

The membrane is delivered in dry form. No pretreatment is required. However, membranes will expand and contract based on electrolyte content. If you have any concerns about storage, chemical stability, and pretreatment please feel free to contact us for further information.

There is a limited quantity available for this membrane product and once that is exhausted, there will not be any more due to lack of PE support in the market.  Please check this page time to time for any new updates.  While there are no other mechanically reinforced FAP-series membranes, alternative membrane products from unreinforced membranes would be the FAP-330 or FAP-450.  

Membrane Properties
Membrane Anion Exchange Membrane
Thickness 24 – 32 µm (microns)
Appearance / Color Opaque
Backing Foil PET
Delivery Form Dry
Reinforcement PE
Counter Ion None
Weight Per Unit Area 3.4 – 4.0 mg cm^-2
Area Specific Resistance (ohm cm²) < 0.4 (0.5 M H2SO4)
Specific Conductivity > 12 mS cm^-1 (0.5 M H2SO4)
Selectivity > 88% (0.1 / 0.5 mol/kg KCl at T = 25 °C)
Proton Transfer Rate > 1500 μmol min^- 1 c m^-2
Dimensional Swelling in Vanadyl Sulfate at T =25°C < 1 %
Uptake in Vanadyl Sulfate at T =25°C 20 wt%
Tensile Strength - max. (MPa) 45 – 65 MPa
Young’s modulus at 23 °C / 50 % r.h. 1400 – 2000 MPa
Elongation to Break (%) 18 – 30

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