Dynamic Light Scattering (DLS) analysis

Dynamic light scattering (DLS) is a technique that allows the measurement of the size and size distribution of molecules and particles generally in the submicron region and, in some cases, below 1 nm.

Typical applications of DLS are the characterization of particles, emulsions or molecules that are dispersed or dissolved in a liquid.

Are you looking for a laboratory offering analysis and expertise by DLS?

FILAB offers Dynamic Light Scattering (DLS) size analysis services to characterize colloidal suspensions, polymers, proteins, … such as 

  • Particle size analysis by DLS
  • Particle size measurement by DLS
  • Measurement of zeta potential by DLS
  • Size measurement from nm
  • Size measurement of molecules with MW < 1000 Da

Our complementary services to DLS analysis:

  • Analysis of nanomaterials
  • Particle size analysis
  • Measurement of zeta potential
  • Particle analysis
  • Suspension analysis
  • Metal oxide analysis
  • Specific surface measurement by BET
  • Morphology analysis by SEM

Dynamic light scattering (DLS) is a method for analysing the properties of colloidal systems. It consists of measuring fluctuations in the intensity of the scattered light. It measures the speed at which particles move and their scattering coefficient. This provides information about their size, shape and charge. By measuring these parameters over time, changes in the characteristics of the particles can be observed. This allows researchers to study factors such as the state of aggregation or other effects that may influence the behaviour of the system.

Dynamic light scattering is particularly useful for the study of macromolecular systems, such as proteins or synthetic proteins.

Dynamic Light Scattering (DLS) involves projecting a laser beam onto a sample and measuring fluctuations in the intensity of the scattered light. The DLS technique uses this information to calculate the scattering coefficient of each particle present, allowing an estimate of its size, charge, shape and stability. DLS analysis also provides insight into the state of aggregation or other effects on particle behaviour. By combining measurements at several wavelengths, it can provide even more detailed information about a sample.

The main advantage of DLS is that it is non-destructive and fast - it provides results in minutes rather than hours as with other techniques such as electron microscopy.

Thomas ROUSSEAU
Thomas ROUSSEAU Scientific and Technical Director
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