ISO 20998-3:2017
Current
The latest, up-to-date edition.
Measurement and characterization of particles by acoustic methods — Part 3: Guidelines for non-linear theory
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English
21-04-2017
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.
| DevelopmentNote |
Supersedes ISO/DIS 20998-3. (04/2017)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| BS ISO 20998-3:2017 | Identical |
| NEN ISO 20998-3 : 2017 | Identical |
| ISO 20998-2:2013 | Measurement and characterization of particles by acoustic methods — Part 2: Guidelines for linear theory |
| ISO 20998-1:2006 | Measurement and characterization of particles by acoustic methods — Part 1: Concepts and procedures in ultrasonic attenuation spectroscopy |
| ISO 14488:2007 | Particulate materials — Sampling and sample splitting for the determination of particulate properties |
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