The instrument allows time-resolved measurements of dynamic and static light scattering in transparent and turbid samples at four angles simultaneously. The apparatus is equipped with a diode-pumped solid-state laser (wavelength of 532 nm) with a maximum power of 200 mW. The sample is filled into cylindrical glass cells of a diameter of 3, 5 or 10 mm or 10 mm square cells and placed in the temperature controlled index-matching bath. The scattered light is detected within an angular range of 10 to 150° by two photomultiplier tubes at each angle and processed by a Flex correlator in a 3D cross-correlation configuration. Thus four intensity correlation functions are obtained simultaneously, one for each scattering angle measured. In aqueous samples we have access to scattering vectors between 0.0027 and 0.031nm^-1.

The instrument is typically used for:

-   Molecular weight determination (Zimm plots).

-   Particle sizing via hydrodynamic radius.

-   Particle form factor determination.

-           Structure factor and dynamic structure factor measurements for strongly interacting dilute and concentrated systems.