ISO 20998-3:2017

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ISO 20998-3:2017 is an international standard focused on measuring and characterizing particles in liquids using acoustic methods, specifically ultrasonic attenuation spectroscopy. It provides guidelines for determining particle size distributions when the ultrasonic attenuation spectrum is not a simple, linear function of particle concentration. This standard is particularly useful for monitoring dynamic changes in particle size distributions, such as agglomeration or flocculation, in liquid dispersions.