1.1 本指南 2. 包括一般信息，无特定限制，用于选择评估传热流体质量和老化的标准试验方法。这些试验方法被认为特别适用于表征封闭系统中的可生物降解的无水传热流体。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ===意义和用途====== 4.1 每种测试方法的重要性取决于使用的系统和第节所列测试方法的目的 5. .使用最新版本的ASTM试验方法。

1.1 This guide 2 covers general information, without specific limits, for selecting standard test methods for evaluating heat transfer fluids for quality and aging. These test methods are considered particularly useful in characterizing biodegradable water-free heat transfer fluids in closed systems. 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 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. ====== Significance And Use ====== 4.1 The significance of each test method depends upon the system in use and the purpose of the test method as listed under Section 5 . Use the most recent editions of ASTM test methods.