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ISO 22412

Particle size analysis - Dynamic light scattering (DLS)

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Organization: ISO
Publication Date: 1 February 2017
Status: active
Page Count: 42
ICS Code (Particle size analysis. Sieving): 19.120
scope:

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 submicrometresized 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, particleparticle interactions and multiple light scattering can become dominant and can result in apparent particle sizes that differ between concentrated and dilute suspensions.

Document History

ISO 22412
February 1, 2017
Particle size analysis - Dynamic light scattering (DLS)
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...
May 1, 2008
Particle size analysis — Dynamic light scattering (DLS)
This International Standard specifies a method for the application of dynamic light scattering (DLS) to the estimation of an average particle size and the measurement of the broadness of the size...

References

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