These include (

,

,

) measurements, saturated density measurements, and any other measurements which give information on the (

,

,

) surface of a fluid.
Source:
PAC, 1981, 53, 1805
(Assignment and presentation of uncertainties of the numerical results of thermodynamic measurements (Provisional))
on page 1818
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.
doi:10.1351/goldbook.