The 3D-Goniometer light scattering apparatus for simultaneous dynamic and static light scattering measurements in turbid systems. Equipped with a thermalized index matching bath and monitoring via a Pt100-sensor. The scattered light is collected in the angular range of 15 to 140° by two high efficient APD's and processed in a flex-correlator in cross-correlation configuration. Thus, in aqueous samples we have access to a q-range of 0.0034 to 0.025 1/nm.

The apparatus can be used with 5 mm and 10 mm cylindrical glass cells and is equipped with a sample goniometer where non-ergodic samples can be rotated and characterized. Further, by using square cells the optical path length can be reduces to as low as 0.2 mm. This allows experiments with extremly turbid samples.

 Light source: HeNe 632.8nm 20mW.

Characterization of sample properties such as:
- Particle size distribution
- Interaction effects
- Stability of colloidal products
- Particle form- and structure factors
- Molar mass

For more details on the 3D-technique see:
C. Urban, S. Romer, F. Scheffold, and P. Schurtenberger
Static and dynamic light scattering in turbid suspensions, Makromol. Chem. Phys. Macromol. Symp. 162, 235-248 (2000)
C.Urban and P.Schurtenberger
Characterization of Turbid Colloidal Suspensions using Light Scattering Techniques Combined with Cross-Correlation Methods, J. Colloid Interface Sci. 207, 150 (1998)

This instrument is also commercially available at www.lsinstruments.ch