ISO 22412:2017
Current
The latest, up-to-date edition.
Particle size analysis — Dynamic light scattering (DLS)
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English
06-02-2017
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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.
| DevelopmentNote |
Supersedes ISO/DIS 22412 and ISO 13321. (02/2017)
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| DocumentType |
Standard
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| Pages |
34
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| PublisherName |
International Organization for Standardization
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| Status |
Current
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| Supersedes |
| Standards | Relationship |
| JIS Z 8828:2019 | Identical |
| BS ISO 22412:2017 | Identical |
| NEN ISO 22412 : 2017 | Identical |
| IS 18514 : 2024 | Identical |
| SAC GB/T 29022 : 2012 | Identical |
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