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ASTM D1121-25
Standard Test Methods for Reserve Alkalinity of Engine Coolants and Antirusts
1.1 These test methods cover determination of the reserve alkalinity of new, unused engine coolants, and liquid antirusts as received; of used or unused aqueous dilutions of the concentrated materials; and of aqueous dilutions of solid antirusts using a manual (Test Method A) or an automatic (Test Method B) method.
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.
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