1.1本试验方法涵盖航空航天液压流体水萃取的pH值和氯离子测量。 1.2 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 在机械射流系统内应用液压流体时，流体可能被酸和氯离子污染。在清洁过程中使用的微量水和残留有机溶剂存在下，液压流体的机械剪切可能会引发酸和氯离子的形成。需要进行测量以控制和保持射流系统的清洁度和非腐蚀性。

1.1 This test method covers the measurement of the pH and chloride ion of water extraction of aerospace hydraulic fluids. 1.2 This standard does not purport to address all of the safety problems, 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. ====== Significance And Use ====== On application of the hydraulic fluid within the mechanical fluidic system, the fluid may become contaminated with acid and chloride ion. Mechanical shearing of the hydraulic fluid in the presence of the minute quantity of water and residual amount of organic solvents, used in cleaning, may initiate formation of acid and chloride ion. Measurements are desired to control and maintain the cleanliness and noncorrosiveness of the fluidic system.