1.1 本规范涵盖两类容量移液器。A级精密移液器和B级通用移液器。 附注1: 微量移液器的质量标准见质量标准 E193 . 1.2 本标准中未列出的规定容量的产品，当产品符合中列出的下一个较小容量标准产品的公差范围时，可指定A级公差 表1 . 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《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。

1.1 This specification covers volumetric pipets of two classes. Class A, Precision Pipet and Class B, General Purpose. Note 1: Specifications for micropipets are given in Specification E193 . 1.2 Product with a stated capacity not listed in this standard may be specified class A tolerance when product conforms to the tolerance range of the next smaller volumetric standard product listed in Table 1 . 1.3 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.