phase volume ratio

in counter-current chromatography
symbol: $\beta_{\rm{V}}$
https://doi.org/10.1351/goldbook.16257
Volume of the mobile phase divided by volume of the stationary phase in a column in counter-current chromatography.
Notes:
  1. The stationary phase volume retention ratio (\(S_{\rm{f}}\)) has been defined as the ratio of the volume of stationary phase (\(V_{\rm{s}}\)) to the total column/coil volume (\(V_{\rm{c}}\)), \(S_{\rm{f}} = V_{\rm{s}}/V_{\rm{c}}\).
  2. It is recommended that phase ratio in counter-current chromatography be given the subscript V (i.e. \(\beta_{\rm{V}} = V_{\rm{M}}/V_{\rm{S}}\)) to emphasize phase volume ratio.
  3. The \(\beta\) in counter-current chromatography has been defined as the ratio of planetary radius (\(r\)) over main rotor radius (\(R\)), \(\beta = r/R\).
Source:
PAC, 2017, 90, 181. (Terminology of separation methods (IUPAC Recommendations 2017)) on page 204 [Terms] [Paper]
Citation: 'phase volume ratio' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.16257 RIS BibTex EndNote
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