prEN ISO 20427
Pigments and extenders - Dispersion procedure for sedimentation-based particle sizing of suspended pigment or extender with liquid sedimentation methods (ISO 20427:2023)
Draft Archived
Comment end date
2024-07-13
Project stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2024-05-07
till 2024-07-13
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasForeignTC'S
CEN/TC 298Number of comments
0Comment start date
2024-05-07Scope
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.