International Standard
ISO 7392:2024
Fine bubble technology — Evaluation method for determining surface tension of ultrafine bubble dispersions
Reference number
ISO 7392:2024
Edition 1
2024-04
Read sample
ISO 7392:2024
82780
Published (Edition 1, 2024)

ISO 7392:2024

ISO 7392:2024
82780
Language
Format
CHF 129
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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.

General information

  •  : Published
     : 2024-04
    : International Standard published [60.60]
  •  : 1
     : 20
  • ISO/TC 281
    07.030 
  • RSS updates

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