Abstract

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.

Begin

2024-02-20

WI

00298160

Planned document number

DIN EN ISO 20427

Project number

07800714

Responsible national committee

NA 078-00-02 AA - Nanoproperties of pigments and extenders  

Responsible european committee

CEN/TC 298 - Pigments and extenders  

Responsible international committee

ISO/TC 256/WG 2 - Nanotechnological properties of pigments and extenders  

draft standard

Pigments and extenders - Dispersion procedure for sedimentation-based particle sizing of suspended pigment or extender with liquid sedimentation methods (ISO 20427:2023); German and English version prEN ISO 20427:2024
2024-05
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