electro-osmotic velocity divided by electric field (strength) \[\mu _{\text{eo}}=\frac{\nu _{\text{eo}}}{E}\]
Source:
PAC, 2004, 76, 443. 'Terminology for analytical capillary electromigration techniques (IUPAC Recommendations 2003)' on page 447 (https://doi.org/10.1351/pac200476020443)