ISO 20998-3:2017

Published (Edition 1, 2017)

This publication was last reviewed and confirmed in 2022. Therefore this version remains current.

ISO 20998-3:2017

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Abstract

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.

General information

Status
: Published

Publication date
: 2017-04

Stage
: International Standard confirmed [90.93]
Edition
: 1

Number of pages
: 24
Technical Committee :
ISO/TC 24/SC 4

ICS :
19.120
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