ISO 22412:2017

Status : Published (To be revised)

This standard will be replaced by ISO/CD 22412

	Format	Language
std 1 145	PDF
std 2 145	Paper

CHF145

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Abstract

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.

General information

Status
: Published

Publication date
: 2017-02

Stage
: International Standard to be revised [90.92]
Edition
: 2

Number of pages
: 34
Technical Committee :
ISO/TC 24/SC 4

ICS :
19.120
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