DIN ISO 22412:2018 Edition

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Particle size analysis – Dynamic light scattering (DLS)

Published By	Publication Date	Number of Pages
DIN	2018-09	39

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Categories: 19.120 - Particle size analysis. Sieving, DIN

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Description

This document 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. This document 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.

Additional information

Published Code	DIN
Published By	Deutsches Institut für Normung
Publication Date	2018-09
Pages Count	39
Language	Germany
Descriptors	Definitions, Grain size, Light divergence, Measurement, Particle size, Particle size analysis, Particle size measurement, Particles, Testing
File Size	2.6 MB
ICS Codes	19.120 - Particle size analysis. Sieving

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DIN ISO 22412:2018 Edition

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