1.1 本试验方法涵盖了现场和实验室使用的快速便携式方法，以评估煤油型航空涡轮燃料（包括纯燃料和含添加剂的燃料）在通过凝聚材料时释放夹带或乳化水的能力。 1.1.1 本试验方法适用于煤油型航空涡轮燃料，包括:Jet A和Jet A-1（如规范所述 1655年 ); JP-5、JP-7、JP-8和JP-8+100。（参见第节 6. .) 1.2 以国际单位制表示的值应视为标准值。SI单位后括号中给出的值仅供参考，不视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。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，并确定监管限制的适用性。 有关特定警告声明，请参阅 8.2 – 8.5 . 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 该测试方法提供了航空涡轮燃料中表面活性剂存在的测量。与以前过时的测试方法相同 2550美元 和 第3602页 和当前测试方法 第3948页 和 D8073型 ，该测试方法可以检测燃料中痕量的炼油厂处理化学品。测试方法还可以检测以添加剂形式添加到燃料中的表面活性物质，或在从生产点到使用点的处理过程中由燃料拾取的表面活性物。其中一些物质会降低过滤分离器从燃料中分离游离水的能力。 5.2 该测试方法产生与测试方法大致相同的（低）MSEP评级 第3948页 用于含有强表面活性剂的燃料。 5.2.1 该试验方法将给出与试验方法大致相同的喷射A、喷射A-1、喷射-5、喷射-7和喷射-8燃料的MSEP等级 第3948页 当测试参考流体时。 5.3 与试验方法相比，通过该试验方法获得的MSEP评级受弱表面活性剂的影响较小 第3948页 通过该试验方法获得的Jet A、Jet A-1、JP-5、JP-7和JP-8燃料的MSEP额定值比通过试验方法获得获得的值高一些 第3948页 当添加剂如静电消散剂添加剂（SDA）和腐蚀抑制剂存在于燃料中时。这与这种燃料的过滤分离器在潮湿时的令人满意的性能有关。然而，这些相同的添加剂会对试验方法获得的MSEP等级产生不利影响 第3948页 通过错误地指示这种添加燃料将显著降低过滤分离器在实际使用中从燃料中分离游离水的能力。 5.4 Micro Separometer仪器的有效测量范围为50至100。在这些限制之外获得的值未定义且无效。 注1: 在获得大于100的值的情况下，光透射率很有可能被用于设置100参考水平的燃料中包含的材料（通常是水）降低。在测试的凝聚部分，污染物质以及50 随后，在该部分试验期间，去除了µL±1µL蒸馏水。因此，经处理的燃料具有比用于获得100参考水平的燃料样品更高的透光率，导致最终额定测量值超过100。

1.1 This test method covers a rapid portable means for field and laboratory use to rate the ability of kerosine-type aviation turbine fuels, both neat and those containing additives, to release entrained or emulsified water when passed through coalescing material. 1.1.1 This test method is applicable to kerosine-type aviation turbine fuels including: Jet A and Jet A-1 (as described in Specification D1655 ); JP-5, JP-7, JP-8, and JP-8+100. (See Section 6 .) 1.2 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. 1.3 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 8.2 – 8.5 . 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 ====== 5.1 This test method provides a measurement of the presence of surfactants in aviation turbine fuels. Like previous obsolete Test Methods D2550 and D3602 and current Test Methods D3948 and D8073 , this test method can detect trace amounts of refinery treating chemicals in fuel. The test methods can also detect surface active substances added to fuel in the form of additives or picked up by the fuel during handling from point of production to point of use. Some of these substances degrade the ability of filter separators to separate free water from the fuel. 5.2 This test method yields approximately the same (low) MSEP ratings as Test Method D3948 for fuels that contain strong surfactants. 5.2.1 This test method will give approximately the same MSEP ratings for Jet A, Jet A-1, JP-5, JP-7, and JP-8 fuels as Test Method D3948 when testing reference fluids. 5.3 The MSEP ratings obtained by this test method are less affected by weak surfactants than Test Method D3948 . Somewhat higher MSEP ratings for Jet A, Jet A-1, JP-5, JP-7, and JP-8 fuels are obtained by this test method than those obtained by Test Method D3948 when additives such as static dissipater additives (SDA) and corrosion inhibitors are present in the fuel. This correlates with the satisfactory performance of filter separators for such fuels, when wet. However, these same additives adversely affect the MSEP ratings obtained by Test Method D3948 by erroneously indicating that such additized fuels would significantly degrade the ability of filter separators to separate free water from the fuel in actual service. 5.4 The Micro-Separometer instrument has an effective measurement range from 50 to 100. Values obtained outside of those limits are undefined and invalid. Note 1: In the event a value greater than 100 is obtained, there is a good probability that light transmittance was reduced by material, typically water, contained in the fuel that was used to set the 100 reference level. During the coalescing portion of the test, the contaminating material as well as the 50 µL ± 1 µL of distilled water was subsequently removed during this portion of the test. Thus, the processed fuel had a higher light transmittance than the fuel sample used to obtain the 100 reference level resulting in the final rating measuring in excess of 100.