ISO/PRF 20427
ISO/PRF 20427


This document specifies methods for sample preparation to determine the size distribution of separate particles of a single pigment or extender, which is or is to be dispersed in a liquid by application of a standardized dispersion procedure using an ultrasonic device or a shaker device or a wet jet mill. The described sample preparation methods 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.

General information 

  •  : Under development
  •  : 1
  •  : ISO/TC 256 Pigments, dyestuffs and extenders
  •  :
    87.060.10 Pigments and extenders

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