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ASTM D7840-24

Current Revision

Standard Test Method for Foaming Tendencies of Non-Aqueous Engine Coolants in Glassware

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1.1 This test method covers a simple glassware test for evaluating the tendency of non-aqueous engine coolants to foam under laboratory controlled conditions of aeration and temperature.

1.2 Units—The values stated in SI units are to be regarded as the 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. For specific warning statements, see 7.2 and 7.3.

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.


5.1 In the test method, coolants generally will be distinguished that have a tendency to foam excessively from those that are suitable for further evaluation to determine performance in actual service.

Note 1: In use, the foaming tendency of a coolant solution may be increased by service aging or contamination. A properly functioning pressure cap will tend to suppress foaming in coolant solutions.

SDO ASTM: ASTM International
Document Number D7840
Publication Date Sept. 1, 2024
Language en - English
Page Count 5
Revision Level 24
Supercedes
Committee D15.06
Publish Date Document Id Type View
Sept. 1, 2024 D7840-24 Revision
Dec. 1, 2012 D7840-12 Revision
April 1, 2017 D7840-12R17 Reaffirmation