Pigments and extenders - Dispersion procedure for sedimentation-based particle sizing of suspended pigment or extender with liquid sedimentation methods
STANDARD published on 1.2.2025
Designation standards: ČSN EN ISO 20427
Classification mark: 670561
Catalog number: 520490
Publication date standards: 1.2.2025
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
This document specifies sample preparation methods to determine the size distribution of separate particles of a single pigment or extender, which is dispersed in a liquid by application of a standardized dispersion procedure, using an ultrasonic device, shaker device or wet jet mill.
The sample preparation methods described are optimized for measurements carried out with a particle sizing technique based on sedimentation. This technique relies on particle migration due to gravitation or centrifugal forces and requires a density contrast between the particles and the liquid phase