1.1This test method covers the chemical analysis of engine coolant for azoles and organic acids by high performance liquid chromatography (HPLC).

1.2This test method is applicable to both new and used engine coolant.

1.3Analysis can be performed directly by this test method without pretreatment other than dilution and filtration, as required by the calibration ranges of the equipment.

1.4The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5This 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.

1.6This 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.