Term: electrophoretic velocity, \(\nu_{\text{ep}}\) https://doi.org/10.1351/goldbook.ET06925 Definition: The velocity of a charged analyte under the influence of an electric field relative to the background electrolyte. Also called rate of migration (in electrophoresis). Related Terms: 1) analyte (http://doi.org/10.1351/goldbook.A00331). 2) migration (http://doi.org/10.1351/goldbook.M03920). 3) electrophoresis (http://doi.org/10.1351/goldbook.E02022). Source: PAC, 2004, 76, 443. 'Terminology for analytical capillary electromigration techniques (IUPAC Recommendations 2003)' on page 448 (https://doi.org/10.1351/pac200476020443) Citation: 'electrophoretic velocity, \(\nu_{\text{ep}}\)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.ET06925 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.