BS ISO 18747-2:2019 PDF

Scope: What is ISO 18747 ‑ 2- Multi-velocity approach about? ISO 18747 ‑ 2 is an international standard on determining particle density by sedimentation methods. ISO 18747 ‑ 2 specifies an in situ method for the determination of the density of solid particles or liquid droplets (herein referred to as “particle”) dispersed in the liquid continuous phase. The method is based on the 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 experimentally determined particle velocities in different liquids or media, considering 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. Note : ISO 18747 ‑ 2 does not consider polydispersity about particle density, i.e., all particles are assumed to be of the same material composition. Who is...

BS ISO 18747-2:2019 history

2019 BS ISO 18747-2:2019 Determination of particle density by sedimentation methods - Multi-velocity approach