The areas obtained by integrating the electropherogram (t i , I i ) and the corrected mobilogram (µ(t i ), I mob i ) will therefore be the same. The right factors in (25) do not depend on the specific point of the mobilogram, and it is a function of only L, E m , t R and v p . This means that when comparing runs performed under the same instrumental conditions (field magnitude and ramp, capillary length, and pressure), we can do without such overall factor, simply using