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.
Specifications:
| Sample volume | 50 μL to 4 ml |
| Particle size range (Rh) | 0.15 nm to 5 μm |
| Radius of gyration (Rg) | 5 nm to 5 μm |
| Molecular weight | 360 – 3,600,000 Dalton |
| Angular range | 12° to 150° (+/- 0.01°) Recommended 15° to 150° |
| Laser | Fiber-coupled laser 120 mW, 638 nm |
| Correlator | 320 channels, delay time 12.5 ns to 15 h, auto- and cross-correlation |
| Temperature | up to 90 °C |
For light scattering tutorials:
- LS Spectrometer User Manual
- LS Instrument Training Presentation
- Manual Zim Plot
- Reports and Additionals (Access request needed for download)
Location: