本文件规定了水中超细气泡分散体的取样和样品制备程序和要求。 本文件适用于相对稳定的分散体，其中气泡的大小和数量在取样、样品制备和测量期间相对恒定。 本文件不适用于稳定性较差的细气泡分散体或微气泡分散体。

This document specifies procedures and requirements for sampling and sample preparation of ultrafine bubble dispersions in water. This document is applicable to relatively stable dispersions where the size and number of bubbles are relatively constant for the duration of the sampling, sample preparation and measurement. This document is not applicable to less stable fine bubble dispersions or microbubble dispersions.