1.1 这些规范涵盖了中详细描述的所有类型的玻璃毛细管运动粘度计的操作说明 附件A1 , 附件A2 ，和 附件A3 具体如下: 改进的Ostwald粘度计， 附件A1 悬浮液位粘度计、 附件A2 逆流粘度计、 附件A3 1.2 粘度计的校准在第节中描述 7 . 1.3 本标准涵盖了一些广泛使用的粘度计，适用于按照试验方法使用 D445 能够在试验方法规定的精密度范围内测量运动粘度的其他玻璃毛细管型粘度计 D445 可以使用。 1.4 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.5 本国际标准是根据《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的世界贸易组织技术性贸易壁垒（TBT）委员会发布的离子。

1.1 These specifications cover operating instructions for glass capillary kinematic viscometers of all the types described in detail in Annex A1 , Annex A2 , and Annex A3 as follows: Modified Ostwald viscometers, Annex A1 Suspended-level viscometers, Annex A2 Reverse-flow viscometers, Annex A3 1.2 The calibration of the viscometers is described in Section 7 . 1.3 This standard covers some widely used viscometers suitable for use in accordance with Test Method D445 . Other viscometers of the glass capillary type which are capable of measuring kinematic viscosity within the limits of precision given in Test Method D445 may be used. 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 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.