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Technical glossary· Membrane technologies

Remineralisation

Short definitionThe controlled addition of minerals such as calcium and magnesium back into water that has been over-purified by RO.

Water with very low TDS tastes flat and can be corrosive. In drinking water and coffee applications, TDS is brought into the 50–150 ppm band with a calcite/dolomite filter, mineral dosing or a raw water bypass blend. In the distribution network, it reduces corrosion by bringing the LSI close to 0.

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