What is MTDS / mineraliser?
A control that adds back some minerals after RO.
Short answer
'Copper' and 'alkaline' stages are mostly taste and marketing — they don't replace correct filtration.
MTDS / mineraliser when buying a water purifier
A control that adds back some minerals after RO.
Why it matters: Keeps taste and essential minerals when TDS input varies (tanker one week, municipal the next).
Look for: 'Copper' and 'alkaline' stages are mostly taste and marketing — they don't replace correct filtration.
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