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Fumasep FAS-50 is a non-reinforced Anion Exchange Membrane (AEM) with very low resistance, high selectivity and high stability in pH acidic and basic environment.
Fumasep FAS-50 membrane comes in either a 10cm x 10cm or 20cm x 30cm size sheet. The membrane is the thin brown foil, delivered on a backing foil (colourless rigid PET foil). Pull off carefully the membrane (brown) from the backing foil. The membrane is delivered in dry form.
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: Electrodialysis for demineralisation, desalination, capacitive deionization and others.
• Anion Exchange Membrane
• Thickness: 45 - 55 micrometers (1.78 - 2.17 mil)
• Sizes: 10cm x 10cm, 20cm x 30cm
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. 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 which may get into contact with the membrane during inspection, storage, pretreatment and mounting must be free of sharp edges or angles.
Dry Form: 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.
Wet Form: Storage for short and medium time scale (hours up to several weeks) may be done in unsealed containers in 0.5 – 1.5 wt% NaCl solution or comparable neutral pH electrolytes. For storage over a longer time period a sealed container is recommended using afore said electrolyte with biocide to avoid biological fouling.
If you have any concerns about storage, chemical stability and pretreatment before proceeding, please feel free to contact us for further information.
Please note that a current lead time of one to two weeks is to be expected.
|Membrane||Anion Exchange Membrane|
|Thickness||45 - 55 µm (microns)|
|Appearance / Color||Transparent / Brown|
|Backing Foil||PET Foil|
|Tensile Strength - max. (MPa)||30 - 40 MPa|
|Density||6.0 - 8.5 mg•cm-2|
|Non-Std Modulus (MPa)||1000 - 1800 MPa|
|Yield Strength at 23°C / 50 % R.H.||30 - 40 MPa|
|Elongation to Break (%)||15 - 60 %|
|Specific Area Resistance||0.6 - 1.5 (in Cl- form) Ω•cm2|
|Specific Conductivity||3 - 8 (in Cl- form) mS•cm-1|
|Counter Ion||Bromide (Br-)|
|Ion Exchange Capacity||1.6 - 2.0 (in Cl- form) meq•g-1|
|Selectivity||92 - 96 %|
|Uptake in H2O at 25°C||10 - 25 wt %|
|Dimensional Swelling in H2O at 25°C||0 - 1 %|
|Proton Transfer Rate||1000 - 3000 µmol•min-1•cm-2|
|Bubble Point Test in Water at 25°C||> 2.5 bar|
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