1.1本指南提出了物理、化学和毒理学测试方法，用于表征来自各种精炼过程（包括再精炼、废油和精炼原油）的碳氢化合物润滑油基础油。本指南无意涵盖所有可能采用的测试。买方和卖方有责任确定并同意本指南的实施。 1.2本指南仅适用于基础油，不适用于成品润滑油。 1.3本指南适用于由碳氢化合物组成的基础油，用于配制包括汽车和工业润滑油在内的产品。 这些基础油在100°C时的粘度通常约为2至40 mm2/s（cSt）（在100°F时为50至3740 SUS）。 1.4本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This guide suggests physical, chemical, and toxicological test methods for characterizing hydrocarbon lubricant base oils derived from various refining processes including re-refining, used oils, and refining crude oil. This guide does not purport to cover all tests which could be employed. It is the responsibility of the buyer and seller to determine and agree upon the implementation of this guide. 1.2 This guide applies only to base oils and not to finished lubricants. 1.3 This guide is relevant to base oils composed of hydrocarbons and intended for use in formulating products including automotive and industrial lubricants. These base oils would typically have a viscosity of approximately 2 to 40 mm2/s (cSt) at 100°C (50 to 3740 SUS at 100°F). 1.4 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.