The BIC NanoBrook Omni measures both particle size and zeta potential, the electrokinetic potential between particles in colloidal systems. The effective range for particle sizing is 2nm - 3µm. Measurements can be made in a variety of media such as water, salt solutions, non-aqueous solutions, and more. Users are required to provide their own quartz cuvettes for all non-aqueous work.
In addition to the standard electrophoretic light scattering (ELS) used to measure zeta potential, this instrument also has the more sensitive phase analysis light scattering (PALS) option. PALS can measure velocities that are as little as 1000 times smaller than conventional ELS. The instrument is also equipped with a sample compartment heater, which takes measurements from room temperature up to 75°C. There are two calculation models available, Smoluchowsky or Huckel, depending on whether the sample is aqueous or non-aqueous.
B20 Fitzpatrick Hall