Light Scattering

Our LS Spectrometer by LS Instruments is located in LRSM 10, which can operate both static light scattering (SLS) and dynamic light scattering (DLS).

Standard measurements:

  • Particle sizing: hydrodynamic Radius (Rh) and radius of gyration (Rg)
  • Size distribution and polydispersity
  • Particle dynamics: diffusion coefficient, mean square displacement,
  • Polymer molecular weight (MW ~ 360 – 3600000 Dalton)
  • 2nd virial coefficient
  • Rayleigh ratio
  • Form and structure factors
  • Inter-particle distance in charged systems
  • Aggregation
  • Etc.


Sample volume50 μL to 4 ml
Particle size range (Rh)0.15 nm to 5 μm
Radius of gyration (Rg)5 nm to 5 μm
Molecular weight360 – 3,600,000 Dalton
Angular range12° to 150° (+/- 0.01°)
Recommended 15° to 150°
LaserFiber-coupled laser 120 mW, 638 nm
Correlator320 channels, delay time 12.5 ns to 15 h,
auto- and cross-correlation
Temperatureup to 90 °C

For light scattering tutorials: