Dynamic Light Scattering (DLS)

Malvern ZEN 3600 Zetasizer

Model:  Malvern ZEN 3600 Zetasizer

Location: 014 Brauer Hall

Description: DLS sometimes referred to as Quasi Elastic Light Scattering (QELS), is a non-invasive, well-established technique for measuring the size, size distribution and zeta potential of molecules and particles typically in the submicron region.


  • Accurate, reliable and repeatable particle size analysis in one or two minutes.
  • Multi-Angle Dynamic Light Scattering (MADLS®) improves the resolution of DLS and provides angular independent size results.
  • Simple, material independent measurement of per peak particle concentration.
  • Mean size only requires knowledge of the viscosity of the liquid.
  • Size measurement of sizes from <5nm to >10um
  • Size measurement of molecules from MW < 1000Da.
  • Low volume requirement (as little as 40µL).

Typical uses:

  • Characterization of particles, emulsions or molecules, which have been dispersed or dissolved in a liquid such as proteins, polymers, micelles, carbohydrates, nanoparticles, colloidal dispersions, emulsion, biological cell, gels and ions.
  • Stability study by measurements of a sample can show whether the particles aggregate over time by seeing whether the hydrodynamic radius of the particle increases.


Per hour rateTrained userBy our service
Other departments at WUSTL$10$70
Other universities$20$80
Industry Corporate$40$160