A cation resin in the sodium form takes calcium and magnesium from the water and releases sodium in their place (softening). Resins in the hydrogen and hydroxyl forms remove all cations and anions (demineralisation, mixed bed). Once the resin is exhausted, it is regenerated with brine (NaCl) or acid/caustic.
Technical glossary· Ion exchange and softening
Ion Exchange
Short definitionA treatment method based on the principle that ions on a resin swap places with unwanted ions in the water; the basis of softening and demineralisation.
Articles that mention this term
Read about the topic in depth
Free water analysis
Let's choose the right system for your facility together
We collect your sample, analyse it in our own laboratory and present a system proposal tailored to you in a report based on the results.
- Our own laboratory
- On-site survey
- Written report
