DLS Principle
A Dynamic Light Scattering (DLS) instrument is a precision device for measuring particle size and distribution. It analyzes the light scattering signals generated by Brownian motion of particles in a liquid to determine particle size and distribution.
Instrument Model & Technical Parameters
- Model: Malvern Nano ZS90
- Technical Specifications:
- Particle Size Measurement
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- Range: 0.3 nm – 10 μm
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- Concentration Range: 0.1 ppm – 40% w
- Zeta Potential Measurement:
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- Range: 3.8 nm – 100 μm
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- Max Sample Concentration: 40% w
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- Max Sample Conductivity: 200 mS/cm
Sample Requirements & Notes
- Solid Samples: 100–1000 mg in plastic centrifuge tubes.
- Sample Compatibility: Must not dissolve or swell in the suspension medium.
- Liquid Samples: 1–5 mL of suspension.
Test Examples
Related Standards
- ISO 22412:2017 Particle size analysis — Dynamic light scattering (DLS)
- GB/T 29022 - 2021:Particle size analysis—Dynamic light scattering (DLS)
