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Please note that this product has been discontinued and a limited amount of stock remains.
Please contact us for availability.
Fumasep F-930-RFD membrane is a perflourinated cation exchange membrane with low resistance, high mechanical stability, low dimensional swelling, and high stability in acidic environments.
Fumasep F-930-RFD 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.
• Applications: Redox-Flow Battery, Vanadium Redox Flow Battery (VRB), using in aqueous acidic conditions
• Cation Exchange Membrane
• Thickness: 28 - 35 micrometers (1.11 - 1.38 mil)
• Sizes: 10cm x 10cm, 20cm x 30cm
The membrane is the transparent (slightly opaque) foil, delivered on a backing foil (colourless rigid PET foil). Pull off carefully the membrane from the backing 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.
The membrane is delivered in H-form and dry form. The membrane does not need any pre-treatment and is ready for use. Please assemble the membrane in dry form. If you have any concerns about storage, chemical stability, and pre-treatment please feel free to contact us for further information.
The membrane can be stored dry for an unlimited amount of time. However, the membrane has to be conditioned (washed and rinsed) prior to use.
Please note that a current lead time of one to two weeks is to be expected.
|Membrane||Cation Exchange Membrane|
|Thickness||28 - 35 µm (microns)|
|Appearance / Color||Transparent / Slightly Opaque|
|Backing Foil||PET Foil|
|Tensile Strength - max. (MPa)||37 - 49 MPa|
|Non-Std Modulus (MPa)||290 - 340 MPa|
|Yield Strength at 23°C / 50 % R.H.||0 MPa|
|Elongation to Break (%)||80 - 150 %|
|Specific Area Resistance||< 0.21 (in 0.5M H2SO4) Ω•cm2|
|Counter Ion||H+ form|
|Uptake in Vanadyl Sulfate at T =25°C||< 6 wt %|
|Dimensional Swelling in Vanadyl Sulfate at T =25°C||< 6 %|
|Weight Per Unit Area||5.9 - 7.7 g•cm2|
|Proton Transfer Rate||> 7.500|
|Bubble Point Test in Water at 25°C||> 3 bar|
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