DS/ISO 20998-3:2017

Measurement and characterization of particles by acoustic methods – Part 3: Guidelines for non-linear theory


Status:
Current
Type:
Standard
Language:
English
Subject:
Price from:
€ 74.64

Scope

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.

Number of pages: 34

Published: 2017-04-25

Date of approval: 2017-04-24

International relationships : ISO 20998-3:2017 IDT

ICS: 19.120 - Particle size analysis. Sieving

Item number: M307723


Committees

Committee

  • ISO/TC 24/SC 4
  • ISO/TC 24/SC 4/WG 14

Danish committee

DS/S-438