isoelectric adjective. [,ʌɪsǝʊɪ'lɛktrɪk] L19.
[from ISO- + ELECTRIC.]
1. Equal in electrical potential; containing or indicating no potential difference. L19.

2. (Composed of particles) having no net electric charge; equal as regards electric charge. Chiefly in isoelectric point, the point (usually pH value) at which an amphoteric molecule or a colloidal particle is electrically neutral in a solution. E20.
b. Carried out or occurring at the isoelectric point. Esp. in isoelectric focusing, electrophoresis in which the resolution is improved by maintaining a pH gradient between the electrodes. M20.

■ isoelectrically adverb (Biochemistry) by making use of the different isoelectric points of the components of a mixture (in order to separate them) M20.

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