Status : Published

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Abstract

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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General information

  • Status
     : Published
    Publication date
     : 2024-04
    Stage
    : International Standard published [60.60]
  • Edition
     : 1
    Number of pages
     : 20
  • Technical Committee :
    ISO/TC 281
    ICS :
    07.030 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

3
Good Health and Well-being
6
Clean Water and Sanitation
8
Decent Work and Economic Growth
9
Industry, Innovation and Infrastructure
11
Sustainable Cities and Communities
12
Responsible Consumption and Production
14
Life Below Water

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