The instrument allows performing electrophoretic light scattering (determination of zeta potential) versus time or temperature, in both aqueous and non-aqueous dispersions using M3-PALS technology. The required particle diameter of samples range from 3.8 nm to 10 mm and their concentration up to 40%w/v although these values might change depending on the sample. A conductivity range from 0 to 200 mS·cm^-1 is required. The temperature range of the instrument is 0-90ºC with a temperature accuracy of 0.1ºC at 25ºC, 0.2ºC at 0ºC and 0.5ºC at 90ºC. The apparatus is equipped with a 4mW He-Ne laser (wavelength of 633 nm) with an automatic laser attenuator, allowing measurements for transmissions ranging from 100% to 0.0003%, and light is detected at an scattering angle of 173º using an avalanche photodiode.

The instrument is typically used for zeta potential and electrophoretic mobility determination.