ASTM D7840 - 12

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

    Active Standard ASTM D7840 | Developed by Subcommittee: D15.22

    Book of Standards Volume: 15.05


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    Significance and Use

    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 1In 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.

    1. Scope

    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 and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 7.2 and 7.3.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1193 Specification for Reagent Water

    E1 Specification for ASTM Liquid-in-Glass Thermometers

    E128 Test Method for Maximum Pore Diameter and Permeability of Rigid Porous Filters for Laboratory Use

    E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples


    ICS Code

    ICS Number Code 71.100.45 (Refrigerants and antifreezes)

    DOI: 10.1520/D7840-12

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