Cold Stabilisation Electrodialysis for mineral adjustment in wine

Cold Stabilisation Electrodialysis (Mineral Adjustment)


One of the least understood yet powerful processes in wine treatment, electrodialysis can be a logistically and financially draining ordeal for mineral adjustment. Our unique Selectra service requires no cold storage, reducing strain on infrastructure and can accurately adjust ionic levels to the winemakers’ satisfaction.

How does electrodialysis work?

The Selectra machine is an exciting new addition to the VAF Memstar portfolio. This machine uses an electrically charged membrane to adjust the ionic levels present in the wine. As the wine passes through the machine, a target level of conductivity can be automatically set to reduce the ionic levels in the wine at an efficient rate to the desired level.

Benefits of Electrodialysis

  • Accurately adjust pH to desired level
  • Calcium and magnesium reduction
  • Sodium chloride and ion reduction
  • Sulphur dioxide removal
  • Cold stabilization – potassium bitartrate stability
  • Inline treatment – single tank circulation
  • Efficient – Processes up to 8,000 litres an hour
  • Cost-effective – low energy requirements


Selectra - Electrodialysis (Mineral Adjustment)


Mobile unit, capable of 8,000 litres an hour

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Selectra Mini (Mineral Adjustment)

Selectra Mini

Mobile unit, suitable for trials and capacity of 20 litres per hour

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Contact VAF Memstar today about our diverse range of filtration and processing services, available in a diverse range of capacities and mobilities.