stepwise elution

in chromatography
https://doi.org/10.1351/goldbook.S05969
An @E02042@ process in which the composition of the mobile phase is changed in steps during a single chromatographic run.
Sources:
Orange Book, 2nd ed., p. 92 [Terms]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 827 [Terms] [Paper]