ISPE Glossary of Pharmaceutical and Biotechnology Terminology

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An atom or radical in solution carrying an integral electric charge, either positive (cation) or negative (anion).

Publication Source: ISPE Baseline® Guide, Vol. 4: Water and Steam Systems (Second Edition)

Publication Date: 2011


An atom or group of atoms carrying a charge of electricity and constituting one of the parts of an electrolyte. Ions charged with negative electricity which travel toward the positive pole (anode), are called anions, those charged with positive electricity which travel toward the negative pole (cathode), are called cations.

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