Fumasep Membranes – Anion Exchange Membrane
FAA-3-PK-75: Optimized for anion transfer in extreme pH environments, offering superior ionicconductivity and proton transfer performance.
Product Descriptions
Fumasep® FAA-3-PK-75 – PK-Reinforced Anion Exchange Membrane
The FAA-3-PK-75 is an anion-exchange membrane reinforced with PK,featuring a thin 70–80 µm structure with excellent selectivity, conductivity, and alkaline stability (pH 0–14). Its high proton transfer rate and low arearesistance make it an ideal choice for electrodialysis, acid recovery, anddesalination processes. Supplied as a brown dry membrane in bromide (Br⁻) form,it maintains dimensional integrity with low swelling and exceptional tensileproperties, even under aggressive chemical exposure.
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Specifications |
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Property |
Fumasep FAA-3-PK-75 |
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Type |
Anion Exchange Membrane |
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Reinforcement |
PK |
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Appearance / Color |
Brown |
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Delivery Form |
Dry |
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Counter Ion |
Br⁻ |
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Thickness (Dry, µm) |
70–80 |
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Weight per Unit Area (mg/cm²) |
7.0–9.0 |
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Ion Exchange Capacity |
1.2–1.4 mmol/g (Cl⁻ form) |
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Area Resistance (Ω·cm²) |
1.2–2.0 |
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Specific Conductivity (mS/cm) |
4.5–6.5 |
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Selectivity (% at 0.1/0.5 mol/kg KCl, 25 °C) |
94–97 |
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Water Uptake (wt %) |
10–20 |
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Dimensional Swelling (%) |
0–2 |
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Transfer Rate (µmol min⁻¹ cm⁻²) |
H⁺: 500–1500 |
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Young’s Modulus (MPa) |
1200–2300 |
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Yield Strength (MPa) |
20–40 |
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Tensile Strength (MPa) |
30–60 |
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Elongation at Break (%) |
10–30 |
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Bubble Point (bar) |
>2 |
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pH Stability Range |
0–14 |
Additional Information :
Pretreatment:
Fumasep® FAA-3-PK-75 – PK-Reinforced Anion Exchange Membrane – The membrane is delivered in bromide form and dry form. Depending on application and cell design,assembling is possible in dry form (without pretreatment) or wet form. For optimum performance, it isrecommended to rinse the membrane in NaCl solution (e.g. 0.5 M NaCl solution at T = 25 °C for 24 hrs) toremove any additive from the membrane. Place the membrane sample between stabilizing meshes /spacers in order to avoid curling. Do not let the membrane dry out since micro-cracks may likely occurduring shrinkage.
