Methods that use differences in migration behaviour in spatially defined regions of the capillary of different field strengths (conductivities).
Note: Electrostacking methods can be used to concentrate dilute samples.
Source:
PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 217 (https://doi.org/10.1515/pac-2017-0111)