prEN ISO 20427
Pigmentai ir užpildai. Dispergavimo procedūra sedimentacija pagrįstam suspenduotų pigmentų ar užpildų dalelių dydžiui nustatyti taikant sedimentacijos skystyje metodus (ISO 20427:2023)
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2024-07-13
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1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
Nuo 2024-05-07
iki 2024-07-13
4. Closure of enquiry
5. Submission to Formal Vote
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CEN Europos standartizacijos komitetasUžsienio technikos komitetas
CEN/TC 298Komentarų skaičius
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2024-05-07Taikymo sritis
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.