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ION

A charge atom or radical which may be positive or negative.

Related Terms

BICARBONATE

An ion or salt of carbonic acid, containing hydrogen, carbon, and oxygen (HC03), such as sodium bicarbonate, NaHC03.

CATION

A positively charged ion that migrates through the electrolyte toward the cathode under the influence of a potential gradient.

BED DEPTH

The height of the resinous material in the column after the ion exchanger has been properly conditioned for effective operation.

DE-ALKALIZER

An apparatus or device used to remove the alkaline carbonate and bicarbonate ions from a water supply.

ANION

A negatively charged ion such as the chloride ion (Cl-).

ION EXCHANGE

A reversible process by which ions are interchanged between solids and a liquid. These ions exist throughout the solution and act almost independently.

pH

The hydrogen ion concentration of a water to denote acidity or alkalinity. A pH of 7 is neutral. A pH above 7 denotes alkalinity while one below 7 denotes acidity.

ACIDITY

Represents the amount of free carbon dioxide, mineral acids, and salts (especially sulfates or iron and aluminum) which hydrolyze to give hydrogen ions in water; is reported as milliequivalents per liter of acid, or ppm acidity as calcium carbonate, or pH, the measure of hydrogen ion concentration.

DEMINERALIZATION

Removal of all ionisable salts using an ion exchange system .

BUFFER ACTION

The action of certain ions in solution in opposing a change in hydrogen ion concentration.
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