ISO 13320:2009 PDF

Scope: This International Standard provides guidance on instrument qualification and size distribution measurement of particles in many two-phase systems (e.g. powders，sprays,，aerosols， suspensions，emulsions and gas bubbles in liquids) through the analysis of their light-scattering properties. lt does not address the specific requirements of particle size measurement of specific materials. This International Standard is applicable to particle sizes ranging from approximately 0,1 hm to 3 mm. With Special instrumentation and conditions, the applicable Size range can be extended above 3 mm and below 0,1 hm. For non-Sspherical particles，a _ Size distribution is reported，where the predicted scattering pattern for the volumetric sum of spherical particles matches the measured Scattering pattern. This is because the technique assumes a Spherical particle shape in its optical model. The resulting particle size distribution is different from that obtained by methods based on other physical principles (e.g. sedimentation, sieving).

ISO 13320:2009 history

$Particle size analysis - Laser diffraction methods$