1.1 这种做法 2. 涵盖最适合处理航空燃料样品的容器类型和制备，以确定受微量污染影响的关键特性。 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 本标准并非旨在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、健康和环境实践，并确定监管限制的适用性。 有关特定警告声明，请参阅 5.1 , 5.2 , 5.3 , 5.4 和 5.6 . 1.4 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====== 3.1 实践中给出了石油产品手动取样的一般说明 D4057号 . 然而，许多航空燃料的特性是由极性或其他化合物的微量水平确定或影响的。 因此，测量重要性要求样品容器不添加或吸附任何材料。本规程介绍了用于测定水分离、铜腐蚀、电导率、热稳定性、润滑性和微量金属含量的取样容器的类型和制备。建筑材料的选择是一个重要因素，尤其是在航空涡轮燃料的情况下，极低浓度的铜会降低热稳定性。航空取样装置中应避免使用铜或铜基合金。 还给出了新容器的批准程序。 3.2 颗粒物污染和游离水含量这两个特性涉及任何取样容器都可以轻易去除的材料。应通过将样品直接放入测量仪器中，而不是使用容器将样品运输至测量设备来确定这些特性。 3.3 本规程中的建议为立即使用和储存样品提供了指导。立即使用包括将样品储存少于24小时。

1.1 This practice 2 covers the types of and preparation of containers found most suitable for the handling of aviation fuel samples for the determination of critical properties affected by trace contamination. 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. For specific warning statements, see 5.1 , 5.2 , 5.3 , 5.4 , and 5.6 . 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. ====== Significance And Use ====== 3.1 General descriptions for the manual sampling of petroleum products are given in Practice D4057 . However, a number of aviation fuel properties are established or affected by trace levels of polar or other compounds. Measurement significance therefore requires that the sample containers not add or adsorb any materials. This practice presents types and preparations of sampling containers found satisfactory for the determination of water separation, copper corrosion, electrical conductivity, thermal stability, lubricity, and trace metal content. The choice of construction materials is an important factor, particularly in the case of aviation turbine fuel, where thermal stability can be degraded by the presence of very low concentrations of copper. The use of copper or copper based alloys shall be eliminated from aviation sampling apparatus. An approval procedure for new containers is also given. 3.2 Two properties, particulate contamination and free water content, involve materials easily removed by any sampling container. These properties should be determined by placing the sample directly into the measuring apparatus and not using containers to transport the sample to the measuring equipment. 3.3 Recommendations in this practice provide guidance for immediate use and for storage of samples. Immediate use involves sample storage for periods less than 24 h.