1.1 本试验方法涵盖了通过蒸馏法测定石油产品、焦油和其他沥青材料中0%至25%体积范围内的水。 附注1: 挥发性水溶性物质(如果存在的话)可以作为水来测量。 1.2 表1列出了该试验方法开发过程中考虑的特定产品。对于沥青乳液，请参阅试验方法 D244 对于原油，请参阅测试方法 D4006 （API MPMS 第10.2章）。 附注2: 对于某些类型的油，通过测试方法可以获得满意的结果 D1796 （API MPMS 第10.6章）。 1.3 以SI单位表示的值将被视为标准值。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 有关具体危害陈述，请参见章节 6 . 1.5 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 了解石油产品的含水量在产品的精炼、购买、销售和转让中非常重要。 5.2 通过本试验方法测定的水量（最接近0。05%或0.1%体积，取决于所使用的捕集器尺寸）可用于校正石油产品和沥青材料的保管转移所涉及的体积。 5.3 允许的水量可以在合同中规定。

1.1 This test method covers the determination of water in the range from 0 % to 25 % by volume in petroleum products, tars, and other bituminous materials by the distillation method. Note 1: Volatile water-soluble material, if present, may be measured as water. 1.2 The specific products considered during the development of this test method are listed in Table  1. For bituminous emulsions refer to Test Method D244 . For crude oils, refer to Test Method D4006 (API MPMS Chapter 10.2). Note 2: With some types of oil, satisfactory results may be obtained from Test Method D1796 (API MPMS Chapter 10.6). 1.3 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. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 6 . 1.5 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 ====== 5.1 A knowledge of the water content of petroleum products is important in the refining, purchase, sale, and transfer of products. 5.2 The amount of water as determined by this test method (to the nearest 0.05 % or 0.1 % by volume, depending on the trap size used) may be used to correct the volume involved in the custody transfer of petroleum products and bituminous materials. 5.3 The allowable amount of water may be specified in contracts.