ISO 20998-2:2022
p
ISO 20998-2:2022
78454
Indisponible en français

Résumé  Preview

This document specifies requirements for ultrasonic attenuation spectroscopy methods for determining the size distributions of a particulate phase dispersed in a liquid at dilute concentrations, where the ultrasonic attenuation spectrum is a linear function of the particle volume fraction. In this regime particle-particle interactions are negligible. Colloids, dilute dispersions, and emulsions are within the scope of this document. The typical particle size for such analysis ranges from 10 nm to 3 mm, although particles outside this range have also been successfully measured. For solid particles in suspension, size measurements can be made at concentrations typically ranging from 0,1 % by volume up to 5 % by volume, depending on the density contrast between the solid and liquid phases, the particle size, and the frequency range[9],[10]. For emulsions, measurements can be made at much higher concentrations. These ultrasonic methods can be used to monitor dynamic changes in the size distribution.


Informations générales 

  •  :  Publiée
     : 2022-08
  •  : 2
  •  : ISO/TC 24/SC 4 Caractérisation des particules
  •  :
    19.120 Analyse dimensionnelle des particules. Tamisage

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fr
Format Langue
std 1 138 PDF + ePub
std 2 138 Papier
  • CHF138

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