The sum of electrophoretic velocity, , of an ion and the electroosmotic velocity, .
This quantity can be measured experimentally as the effective length of the capillary divided by the migration time ().
- Depending on the signs and relative magnitudes of these velocities, the total velocity of an analyte can have either the same or the opposite direction to the electro- osmotic velocity.
- The total velocity is the velocity of the ion measured as a displacement relative to the capillary wall divided by time.
PAC, 2004, 76, 443 (Terminology for analytical capillary electromigration techniques (IUPAC Recommendations 2003)) on page 449