ISO DIS 18747-2

Description / Abstract: This document specifies an in-situ method for the determination of the density of solid particles or liquid droplets (below 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. According to this document, 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 assumes that relevant characteristics (e.g, volume, shape, agglomeration state) do not change. The standard does not consider polydispersity with regard to particle density. In other words, all particles are assumed to be of the same material composition.