This expresses the number of peaks which can be resolved in a given part of the
chromatogram between the peaks of two consecutive
n-
alkanes with

and
(

) carbon atoms in their molecules:
In the German literature the symbol

(trennzahl) is commonly used to express the separation number. As the separation number
depends on the
n-
alkanes used for the calculation, they always must be specified with any given

value.
Source:
PAC, 1993, 65, 819
(Nomenclature for chromatography (IUPAC Recommendations 1993))
on page 847
Cite as:
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.