Permutite water softners operate by Ion Exchange. The hard water is passed through a bed of Ion Exhange material, which exchanges Sodium Ions for hardness forming Calcium and Magnesium Ions. All hardness salts in the water are thus converted to the equivalent Sodium Salts, which have no scale forming or soap destroying properties. The softening action continues until the Ion Exchange material contains no more Sodium Ions which can be exchanged for Calcium and Magnesium.

Permutite water softners operate by Ion Exchange. The hard water is passed through a bed of Ion Exhange material, which exchanges Sodium Ions for hardness forming Calcium and Magnesium Ions. All hardness salts in the water are thus converted to the equivalent Sodium Salts, which have no scale forming or soap destroying properties. The softening action continues until the Ion Exchange material contains no more Sodium Ions which can be exchanged for Calcium and Magnesium.