ASTM D7437 - 08(2019)
Standard Test Method for Temperature and Hard Water Stability of Engine Coolants
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Significance and Use
4.1 4.1 This test method provides information on the stability of the engine coolant concentrate when stored at elevated temperatures for two weeks. These test conditions might simulate the conditions that a product would be subjected to in transit and storage in warehouses before delivery to the customer.
4.2 This test method provides information on the stability of an engine coolant diluted with synthetic hard water at elevated temperatures. This test method provides a laboratory method to test the sensitivity of the engine coolant to hard water.
1. Scope
1.1 This test method covers a simple glassware-type procedure for evaluating the effects of temperature and hard water on the stability of engine coolants at elevated temperatures under controlled laboratory conditions.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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.
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
D1176 Practice for Sampling and Preparing Aqueous Solutions of Engine Coolants or Antirusts for Testing Purposes
D1193 Specification for Reagent Water
E288 Specification for Laboratory Glass Volumetric Flasks
British Standards
BS 5117-1.5:1992 Coolant Hard Water Stability Test BSI BS ISO 5725-2 Accuracy (Trueness and Precision) of Measurement Methods and ResultsPart 2: Basic Method for the Determination of Repeatability and Reproducibility of a Standard Measurement MethodICS Code
ICS Number Code 71.100.45 (Refrigerants and antifreezes)
UNSPSC Code
UNSPSC Code 25174004(Engine coolant)
Referencing This Standard
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DOI: 10.1520/D7437-08R19
Citation Format
ASTM D7437-08(2019), Standard Test Method for Temperature and Hard Water Stability of Engine Coolants, ASTM International, West Conshohocken, PA, 2019, www.astm.org
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