## phase ratio, $$\beta$$

in chromatography
https://doi.org/10.1351/goldbook.P04531
The ratio of the volume of the mobile phase to that of the stationary phase in a column: $\beta =\frac{V_{0}}{V_{\text{s}}}$ In the case of open-tubular columns the geometric internal volume of the tube ($$V_{\text{c}}$$) is to be substituted for $$V_{0}$$.
Sources:
Orange Book, 2nd ed., p. 100 [Terms]
PAC, 1993, 65, 819. (Nomenclature for chromatography (IUPAC Recommendations 1993)) on page 833 [Terms] [Paper]