DIN ISO 22412:2018-09
Particle size analysis - Dynamic light scattering (DLS) (ISO 22412:2017)
| Fecha edición: |
2018-09-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | 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. |
| Keywords: | Definitions|Grain size|Light divergence|Measurement|Particle size|Particle size analysis|Particle size measurement|Particles|Testing |
| ICS: | 19.120 - Análisis dimensional de partículas. Tamizado. |
| CTN: | |
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Equivalencia Internacional |
Idéntica ISO 22412:2017 |
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Reemplazo Normas |
Reemplaza a DIN ISO 22412:2018-02 |
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