Salt purification filters

Hardness salts

— compounds that give water increased hardness are primarily calcium and magnesium salts. To purify water from such salts, a separate device is provided — purification and softening systems operating on the principle of ion exchange. For more information about such devices, see "Type", here we note that if the specs of the cleaning and softening system indicate the filtration of hardness salts, then we have a classic softener, if not — an iron remover. However, water softening is also present in classic filters.