1.1 这些试验方法包括测量牛顿和非牛顿液体的粘度。这些试验方法适用于粘度在5 × 10 −4. Pa·s至10 3. Pa·s（0.5 cP至10 6. cP）。剪切速率范围取决于所用的针和液体的粘度，可以从10 −4. s −1. 至10 3. s −1. 。使用延伸杆和施加的重量，剪切速率为10 4. s –1 可以实现。 1.2 还可以测定具有这种性质的液体的屈服应力。 1.3 这些测试方法包括通过测量圆柱针在重力作用下穿过测试液体时的稳态（恒定）或终端速度来确定牛顿流体和非牛顿流体（透明或不透明）的液体粘度。 非牛顿液体的屈服应力可以使用相同的程序测量。 1.4 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.5 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。 1.6 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 这些试验方法适用于测量清漆和油漆的流变特性。特别是，低至中等剪切速率测量提供了与抗凹陷性、平整度等相关的信息。

1.1 These test methods cover the measurement of the viscosity of Newtonian and non-Newtonian liquids. These test methods are applicable to liquids having viscosities in the range from 5 × 10 −4 Pa·s to 10 3 Pa·s (0.5 cP to 10 6 cP). The shear rate range is dependent upon the needle used and viscosity of the liquid and may vary from 10 −4 s −1 to 10 3 s −1 . With an extension bar and applied weight, a shear rate of 10 4 s –1 may be achieved. 1.2 The yield stress of liquids having this property may also be determined. 1.3 These test methods consist of determining liquid viscosities of Newtonian and non-Newtonian fluids (clear or opaque) by measuring the steady-state (constant) or terminal velocities of cylindrical needles as they fall through the test liquid under the influence of gravity. Yield stresses of non-Newtonian liquids may be measured using the same procedure. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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. 1.6 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 These test methods are applicable for measuring the rheological properties of varnishes and paints. In particular, the low to moderate shear rate measurements provide information related to sag resistance, leveling, etc.