polarographic cell

polarographic cell

[pō¦lar·ə¦graf·ik ′sel]
(analytical chemistry)
Device for polarographic (voltammetric) analysis of an electrolyte solution; a known voltage is applied to the solution, and the ensuing current that passes through the cell (to an electrode) is measured.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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This is not the case for voltammetry techniques where the plating solution can be added directly into the polarographic cell (after any appropriate dilutions).