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ASTM D4921-20

Current Revision

Standard Test Method for Foaming Tendencies of Engine Coolants at Room Temperature

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1.1 This test method applies to a simple shake test for evaluating the tendency of an aqueous solution of engine coolant to foam at room temperature.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


4.1 The test method will generally identify coolants that have a tendency to foam excessively at room temperature.

Note 1: In use, the foaming tendency of a coolant solution may be increased by service aging or contamination.

SDO ASTM: ASTM International
Document Number D4921
Publication Date April 1, 2020
Language en - English
Page Count 2
Revision Level 20
Supercedes
Committee D15.06
Publish Date Document Id Type View
April 1, 2020 D4921-20 Revision
Oct. 1, 2012 D4921-95R12 Reaffirmation
April 1, 2006 D4921-95R06 Reaffirmation
April 10, 2000 D4921-95R00 Reaffirmation