标准编号：ISO 7392:2024
中文名称：微气泡技术 测定超微气泡分散体表面张力的评价方法
英文名称：Fine bubble technology — Evaluation method for determining surface tension of ultrafine bubble dispersions
发布日期：2024-04
标准范围
This document specifies evaluation methods for surface tension of ultrafine bubble (UFB) dispersion in water. Three test methods, Wilhelmy, du Noüy and the pendant drop method, are adopted because of their advantages to detect small change in surface tension by UFB dispersion in water and the high accessibility to commercially available instruments. This document can be used to measure the surface tension of liquid containing UFB dispersion in dilute surfactant water solution such as detergent or machining coolant as well as UFB dispersion in water. NOTE Measurement data of liquid containing UFB dispersion in dilute surfactant water solution are summarized in Annex D.
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