1.1 本试验方法包括测量石油或合成液体与水分离的能力。虽然专门为粘度为28.8的汽轮机油开发 毫米 2. /s至90 毫米 2. /s在40 °C时，本试验方法可用于在其他试验温度下测试具有不同粘度的其他类型的油和合成流体。然而，建议将试验温度提高到82℃ °C±1 °C测试粘度大于90的产品时 毫米 2. /s在40 °C.对于油和水混合不足的高粘度油，试验方法 D2711 建议使用。其他测试温度，如25 也可以使用°C。 A1 %在测试用于海洋应用的某些油或燃料时，可使用氯化钠（NaCl）溶液或合成海水代替蒸馏水。 1.2 当测试相对密度大于水的合成液时，程序不变，但应注意，水可能会浮在乳液或液体上。 1.3 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。 1.4 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。 有关具体的警告声明，请参阅第节 6. . ====意义和用途====== 4.1 本试验方法为确定易受水污染和湍流影响的油的水分离特性提供了指南。它用于新机油的规格和在用机油的监测。

1.1 This test method covers measurement of the ability of petroleum oils or synthetic fluids to separate from water. Although developed specifically for steam-turbine oils having viscosities of 28.8 mm 2 /s to 90 mm 2 /s at 40 °C, this test method may be used to test oils of other types having various viscosities and synthetic fluids at other test temperatures. It is recommended, however, that the test temperature be raised to 82 °C ± 1 °C when testing products more viscous than 90 mm 2 /s at 40 °C. For higher viscosity oils where there is insufficient mixing of oil and water, Test Method D2711 is recommended. Other test temperatures such as 25 °C may also be used. A1 % sodium choloride (NaCl) solution or synthetic seawater may be used in place of distilled water when testing certain oils or fuels used in marine applications. 1.2 When testing synthetic fluids whose relative densities are greater than that of water, the procedure is unchanged, but it should be noted that the water will probably float on the emulsion or liquid. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 6 . ====== Significance And Use ====== 4.1 This test method provides a guide for determining the water separation characteristics of oils subject to water contamination and turbulence. It is used for specification of new oils and monitoring of in-service oils.