BS ISO 7392:2024 PDF

Fine bubble technology. Evaluation method for determining surface tension of ultrafine bubble dispersions

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Title (English):

BS ISO 7392:2024

Fine bubble technology. Evaluation method for determining surface tension of ultrafine bubble dispersions

Document status:: Active
Format:: Electronic (PDF)
Publication date:: April 30, 2024
ICS:: 07.030
SKU:: BS ISO 7392:2024

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Abstract

1 Scope 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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BS ISO 7392:2024 PDF

Abstract

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