1.1 本试验方法描述了旋转粘度计的校准或校准验证，其中旋转元件在环境温度条件下浸入牛顿参考材料中。该方法适用于旋转式粘度计，其中恒定的旋转速度导致试样产生的测量扭矩，以及斯托默粘度计，其中，恒定的施加扭矩导致测量的旋转速度。它不适用于锥板式或平行板式粘度计。 1.2 应使用牛顿参考材料，使用温度、粘度范围和剪切速率（转速）等实验条件进行校准，尽可能接近用于试样测量的条件。 1.3 单位- 以国际单位制表示的值应视为标准值。 括号中给出的值是数学转换，仅供参考，不被视为标准值。 1.3.1 Poise（P）的常用粘度单位与国际单位制单位的关系相当于1cP=1mPa·s。 1.4 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。 1.5 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 该试验方法可用于校准或验证具有同轴主轴几何结构的旋转粘度计的校准。

1.1 This test method describes the calibration or calibration verification of rotational viscometers in which the rotational element is immersed in a Newtonian reference material under ambient temperature conditions. The method is applicable to rotational-type viscometers where a constant rotational speed results in a measured torque generated by the test specimen, and to Stormer viscometers where a constant applied torque results in a measured rotational speed. It is not intended for cone-and-plate or parallel plate viscometers. 1.2 Calibration shall be performed with Newtonian reference materials using experimental conditions such as temperature, viscosity range, and shear rate (rotational speed), as close as practical to those to be used for measurement of test specimens. 1.3 Units— The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions that are provided for information only and are not considered standard. 1.3.1 Common viscosity units of Poise (P) are related to the SI units by the equivalency 1 cP = 1 mPa·s. 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. 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 This test method may be used to calibrate or verify calibration of a rotational viscometer with coaxial spindle geometries.