Standard Historical Last Updated: May 23, 2012 Track Document
ASTM D971-99a(2004)

Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method

Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method D0971-99AR04 ASTM|D0971-99AR04|en-US Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method Standard new BOS Vol. 10.03 Committee D27
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Significance and Use

Interfacial tension measurements on electrical insulating oils provide a sensitive means of detecting small amounts of soluble polar contaminants and products of oxidation. A high value for new mineral insulating oil indicates the absence of most undesirable polar contaminants. The test is frequently applied to service-aged oils as an indication of the degree of deterioration.


FIG. 1 Interfacial Tensiometer


FIG. 2 Top View of Interfacial Tensiometer

Scope

1.1 This test method covers the measurement of the interfacial tension between mineral oil and water, under non-equilibrium conditions.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Details
Book of Standards Volume: 10.03
Developed by Subcommittee: D27.07
Pages: 3
DOI: 10.1520/D0971-99AR04
ICS Code: 75.100