ISO 13320:2020

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These are all International Organization for Standardization (ISO) standards related to particle size analysis and characterization. ISO 13320:2020 focuses on particle size analysis using laser diffraction methods. ISO 13317-3:2001 deals with particle size distribution determination using X-ray gravitational sedimentation. ISO 13099-2:2012 specifies methods for measuring electrophoretic mobility and zeta-potential of particles in colloidal systems.