ISO 20998-3:2017

Indisponible en français

Publiée (Edition 1, 2017)

Cette norme a été révisée et confirmée pour la dernière fois en 2022. Cette édition reste donc d’actualité.

ISO 20998-3:2017

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Résumé

ISO 20998-3:2017 gives guidelines for ultrasonic attenuation spectroscopy methods for determining the size distributions of one or more material phases dispersed in a liquid at high concentrations, where the ultrasonic attenuation spectrum is not a linear function of the particle volume fraction. In this regime, particle-particle interactions are not negligible.

ISO 20998-3:2017 is applicable to colloids, dispersions, slurries, and emulsions. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. Measurements can be made for concentrations of the dispersed phase ranging from about 5 % by volume to over 50 % by volume, depending on the density contrast between the continuous and the dispersed phases, the particle size, and the frequency range^[⁹^{] [}¹⁰^]. These ultrasonic methods can be used to monitor dynamic changes in the size distribution, including agglomeration or flocculation.

Informations générales

État actuel
: Publiée

Date de publication
: 2017-04

Stade
: Norme internationale confirmée [90.93]
Edition
: 1
Comité technique :
ISO/TC 24/SC 4

ICS :
19.120
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