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EN ISO 20427:2026

Pigments and extenders - Dispersion procedure for sedimentation-based particle sizing of suspended pigment or extender with liquid sedimentation methods (ISO 20427:2026)

Publication date:   May 18, 2026

General information

60.60   Standard published   Mar 18, 2026

CEN

CEN/TC 298 Pigments and extenders

European Norm

87.060.10   Pigments and extenders

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
EN ISO 20427:2024

NOW

PUBLISHED
EN ISO 20427:2026
60.60 Standard published
Mar 18, 2026