By Institute for Advanced Chemistry of Catalonia (IQAC-CSIC)
Photon correlation spectrometer (3DDLS, LS Instruments) for determining particle size distribution, shape, diffusion coefficient, aggregation number and molecular weight of colloidal dispersions. It performs dynamic (DLS) and static (SLS) light scattering measurements at a variable angle between 20° and 140°. The measurement range is from 2 nm to 1000 µm. This instrument, equipped with a He-Ne laser (632.8 nm), makes it possible to measure samples with higher turbidity, as it can suppress multiple scattering thanks to 3D technology. The software enables automatic estimation of particle size distribution using the Cumulants method or CONTIN analysis.
