本文件规定了测定活塞式容积仪（POVA）容积的光度参考测量程序。该程序适用于包括最大标称体积为5？的基本装置的完整系统000？μl和选择用于仪器的所有零件，一次性或可重复使用，涉及交付测量（Ex）。

This document specifies the photometric reference measurement procedure for the determination of volume of piston-operated volumetric apparatus (POVA). The procedure is applicable to complete systems comprising the basic apparatus with a maximum nominal volume of 5 000 μl and all parts selected for use with the apparatus, disposable or reusable, involved in the measurement by delivery (Ex).