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prEN ISO 20427

Pigments and extenders - Dispersion procedure for sedimentation-based particle sizing of suspended pigment or extender with liquid sedimentation methods (ISO/DIS 20427:2025)

Draft Public enquiry
Comment end date 2025-07-10
Export comments Read draft and comment

Project stage codes

1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2025-05-11 till 2025-07-10
4. Closure of enquiry
5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

87.060.10 - Pigments and extenders

ForeignTC'S

CEN/TC 298

Number of comments

0

Comment start date

2025-05-11

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.

Relations

Pakeis
LST EN ISO 20427:2024

Pigments and extenders - Dispersion procedure for sedimentation-based particle sizing of suspended pigment or extender with liquid sedimentation methods (ISO 20427:2023)