The geometric volume of the part of the tube that contains the packing:
is the internal cross-sectional area of the tube
the length of the packed part of the column.
In the case of wall-coated open-tubular columns the column volume corresponds to the
geometric volume of the whole tube having a liquid or a solid stationary phase on
PAC, 1993, 65, 819
(Nomenclature for chromatography (IUPAC Recommendations 1993))
on page 832
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook