![]() ![]() Zeta potential is often helpful in terms of ruling out candidate product batches during stability testing thereby saving time and money. 3 It is then used to calculate the zeta potential by applying the Henry equation: Their velocity, or electrophoretic mobility, under the influence of an electric field, is measured using LASER Doppler velocimetry. During a zeta potential analysis, charged colloidal dispersions are placed into a zeta cell (Figure 1) and upon application of an external electric field, the particles travel toward the electrode that has a charge opposite to that of the particle. 2 At PTL, zeta potential is measured using the Zetasizer Nano ZS (Malvern Panalytical), which calculates zeta potential using the principle of electrophoresis. Under the influence of an electric field, charged particles will exhibit certain electrokinetic effects including electrophoresis, electroosmosis, streaming potential, or sedimentation potential. Zeta Potential is the characterization of the electrokinetic potential of liquid-liquid or solid-liquid colloidal dispersions. From the top of the range Zetasizer systems. As well as this ease of use, the performance and confidence in the results is validated by the fact that 94 of the World’s top 100 universities have invested in a Malvern Zetasizer Nano. The Zetasizer Nano instruments are the most user-friendly systems available. Malvern Instruments Zetasizer Nano Series User Manual. ![]()
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