International Standard
ISO 7392:2024
Fine bubble technology — Evaluation method for determining surface tension of ultrafine bubble dispersions
Reference number
ISO 7392:2024
Edición 1
2024-04
International Standard
Vista previa
ISO 7392:2024
82780
No disponible en español
Publicado (Edición 1, 2024)

ISO 7392:2024

ISO 7392:2024
82780
Idioma
Formato
CHF 129
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Resumen

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.

Informaciones generales

  •  : Publicado
     : 2024-04
    : Norma Internacional publicada [60.60]
  •  : 1
     : 20
  • ISO/TC 281
    07.030 
  • RSS actualizaciones

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