Résumé
ISO 22412:2017 specifies the application of dynamic light scattering (DLS) to the measurement of average hydrodynamic particle size and the measurement of the size distribution of mainly submicrometre-sized particles, emulsions or fine bubbles dispersed in liquids. DLS is also referred to as "quasi-elastic light scattering (QELS)" and "photon correlation spectroscopy (PCS)," although PCS actually is one of the measurement techniques.
ISO 22412:2017 is applicable to the measurement of a broad range of dilute and concentrated suspensions. The principle of dynamic light scattering for a concentrated suspension is the same as for a dilute suspension. However, specific requirements for the instrument setup and specification of test sample preparation are required for concentrated suspensions. At high concentrations, particle-particle interactions and multiple light scattering can become dominant and can result in apparent particle sizes that differ between concentrated and dilute suspensions.
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Informations générales
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État actuel: ProjetVous pouvez contribuer à l’élaboration de ce projet de Norme internationale en contactant le membre nationalStade: Mise au vote du DIS: 12 semaines [40.20]
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Edition: 3
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Comité technique :ISO/TC 24/SC 4ICS :19.120
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Cycle de vie
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Précédemment
PubliéeISO 22412:2017
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Actuellement
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