 As such, DNA is easily separated from other molecules that are not both charged and strongly non-linear, using SCODA

To perform SCODA concentration of DNA molecules, the sample must be embedded in the separation media (gel) in locations where the electrophoretic field is of optimal intensity.This initial translocation of the sample into the optimal concentration position is referred to as "injection".The optimal position is determined by the gel geometry and location of the SCODA driving electrodes.