DIN ISO 22412:2018
Particle size analysis - Dynamic light scattering (DLS) (ISO 22412:2017)
- Standard No.
- DIN ISO 22412:2018
- Release Date
- 2018
- Published By
- German Institute for Standardization
- Status
- Replace By
- DIN ISO 22412 E:2018-02
- Latest
- DIN ISO 22412:2018-09
- Replace
- DIN ISO 22412:2018-02
- 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 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.
DIN ISO 22412:2018 history
- 2018 DIN ISO 22412:2018-09 Particle size analysis - Dynamic light scattering (DLS) (ISO 22412:2017)
- 1970 DIN ISO 22412 E:2018-02 Particle size analysis - Dynamic light scattering (DLS)
- 2018 DIN ISO 22412:2018 Particle size analysis - Dynamic light scattering (DLS) (ISO 22412:2017)
