1.1 本试验方法涵盖并适用于航空燃料和其它类似低电导率碳氢化合物液体在1 pS/m至2000 pS/m范围内的“剩余电导率”的测定（见 3.1.3 ).该测试方法可用于实验室或现场。 1.2 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.3 警告 -汞已被许多监管机构指定为可能导致严重医疗问题的有害物质。汞或其蒸气已被证明对健康有害并对材料具有腐蚀性。处理汞和含汞产品时要小心。有关更多信息，请参见适用的产品安全数据表（SDS）。什锦什锦什锦当地或国家法律禁止包含产品或两者兼而有之。用户必须确定其所在地销售的合法性。 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。 具体警告语句，请参见 8.3 和 附件A1 . 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《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 燃料中由于处理引起的静电荷的产生和消散很大程度上取决于存在的离子物质，其可以通过“剩余电导率”来表征静电荷消散的时间与电导率成反比。本试验方法可补充试验方法 D2624 其仅限于含有静电耗散添加剂的燃料什锦。 附注1: 对于电导率低于1pS/m的低电导率流体，交流测量技术优于用于感测本体流体的电导率的dc测试方法。

1.1 This test method covers and applies to the determination of the “rest electrical conductivity” of aviation fuels and other similar low-conductivity hydrocarbon liquids in the range from 1 pS/m to 2000 pS/m (see 3.1.3 ). This test method can be used in the laboratory or in the field. 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 WARNING —Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Use Caution when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for additional information. The potential exists that selling mercury or mercury-containing products, or both, is prohibited by local or national law. Users must determine legality of sales in their location. 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 warning statements, see 8.3 and Annex A1 . 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 The generation and dissipation of electrostatic charge in fuel due to handling depend largely on the ionic species present which may be characterized by the “rest electrical conductivity.” The time for static charge to dissipate is inversely related to conductivity. This test method can supplement Test Method D2624 which is limited to fuels containing static dissipator additive. Note 1: For low-conductivity fluids below 1 pS/m in conductivity, an ac measurement technique is preferable to a dc test method for sensing the electrical conductivity of bulk fluid.