DS/ISO 18747-2:2019

Determination of particle density by sedimentation methods – Part 2: Multi-velocity approach


Status:
Current
Type:
Standard
Language:
English
Subject:
Price from:
€ 68.17

Scope

This document specifies an in situ method for the determination of the density of solid particles or liquid droplets (herein referred to as "particle") dispersed in liquid continuous phase. The method is based on direct experimental determination of particle velocity in these liquids or media in gravitational or centrifugal fields based on Stokes law. The particle density is calculated from experimentally determined particle velocities in different liquids or media, taking into account their dynamic viscosities and densities, respectively. The approach does not require the knowledge of particle size distribution but assumes that sedimentation relevant characteristics (e.g. volume, shape, agglomeration state) do not change. This document does not consider polydispersity with regard to particle density, i.e. all particles are assumed to be of the same material composition.

Number of pages: 28

Published: 2019-07-09

Date of approval: 2019-07-08

International relationships : ISO 18747-2:2019 IDT

ICS: 19.120 - Particle size analysis. Sieving

Item number: M322086


Committees

Committee

  • ISO/TC 24/SC 4
  • ISO/TC 24/SC 4/WG 2

Danish committee

DS/S-438