DS/ISO 22412:2017

Particle size analysis – Dynamic light scattering (DLS)


Status:
Current
Type:
Standard
Language:
English
Subject:
Price from:
€ 86.07

Scope

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.

Number of pages: 44

Published: 2017-02-27

Date of approval: 2017-02-13

International relationships : ISO 22412:2017 IDT

ICS: 19.120 - Particle size analysis. Sieving

Item number: M299671


Committees

Committee

  • ISO/TC 24/SC 4
  • ISO/TC 24/SC 4/WG 7

Danish committee

DS/S-438