ISO 20998-1:2006

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ISO 20998-1:2006 is an international standard focusing on ultrasonic methods for determining the size distribution of particles dispersed in liquids. It provides concepts and procedures for analyzing these particle suspensions using ultrasonic attenuation spectroscopy. The standard is applicable to various materials like colloids, dispersions, slurries, and emulsions, with a typical particle size range from 10 nm to 3 mm.