Determination of particle density by sedimentation methods — Part 1: Isopycnic interpolation approach

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

22-03-2018

Publisher

International Organization for Standardization

ISO 18747-1:2018 specifies a method for the determination of the density of solid particles or liquid droplets (below referred to generically as "particles") dispersed in a liquid. The method is based on the fact that a particle wholly immersed in fluid experiences buoyancy equal to the weight of the fluid displaced by this particle (Archimedean principle), and if its mass force matches the buoyant force, it stops gravitational or centrifugal settling/creaming and the particle remains suspended. This implies that the density of the particle equals the density of the liquid. In this document, particle density determination is conducted by analysing the direction of the migration movement of particles dispersed in liquids with densities that are lower and higher than particle density. All particles are of the same material composition.

DevelopmentNote	Supersedes ISO/DIS 18747-1. (03/2018)
DocumentType	Standard
Pages	28
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
BS ISO 18747-1:2018	Identical

ISO 13317-1:2001	Determination of particle size distribution by gravitational liquid sedimentation methods — Part 1: General principles and guidelines
ISO 13318-2:2007	Determination of particle size distribution by centrifugal liquid sedimentation methods Part 2: Photocentrifuge method
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ISO 2811-3:2011	Paints and varnishes — Determination of density — Part 3: Oscillation method
ISO 26824:2013	Particle characterization of particulate systems — Vocabulary
ISO/TR 13097:2013	Guidelines for the characterization of dispersion stability
ISO 14887:2000	Sample preparation Dispersing procedures for powders in liquids
ISO 20998-1:2006	Measurement and characterization of particles by acoustic methods Part 1: Concepts and procedures in ultrasonic attenuation spectroscopy
ISO 3105:1994	Glass capillary kinematic viscometers — Specifications and operating instructions