Title: elution mode
Long Title: IUPAC Gold Book - elution mode
DOI: 10.1351/goldbook.09943
Status: current

Definition
Method of introduction of the mobile phase (upper or lower) into the rotating coil (from the head or the tail). Of four combinations, only two elution modes should be used in high-speed counter-current chromatography, i.e. either the lower phase from the head toward the tail or the upper phase from the tail toward the head.

Related Term
- high-speed counter-current chromatography: https://goldbook.iupac.org//terms/view/09944

Source
- PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 203 (https://doi.org/10.1515/pac-2017-0111)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/09943/html
- json: https://goldbook.iupac.org/terms/view/09943/json
- xml: https://goldbook.iupac.org/terms/view/09943/xml

Citation: Citation: 'elution mode' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.09943
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Accessed: 2026-04-19T07:37:36+00:00