Zeta potential

Zeta potential is a measure of the magnitude of the electrostatic or charge repulsion or attraction between particles, and is one of the fundamental parameters known to affect stability. Its measurement brings detailed insight into the causes of dispersion, aggregation or flocculation, and can be applied to improve the formulation of dispersions, emulsions and suspensions.

Speed of introduction of new formulations is the key to product success. Measurement of zeta potential is one of the ways to shorten stability testing by reducing the number of candidate formulations, hence reducing the time and cost of testing as well as improving shelf life.

In water treatment, monitoring dosage using zeta potential measurements can reduce the cost of chemical additives by optimizing the dosage control.

The measurement of zeta potential has important applications in a wide range of industries including; ceramics, pharmaceuticals, medicine, mineral processing, electronics and water treatment.

Malvern Instruments’ Zetasizer Nano provides a simple, fast and accurate way to measure zeta potential. The unique disposable capillary cell ensures there is no cross contamination between samples, which improves the simplicity, speed and accuracy of the measurement.

Zeta potential products

Zetasizer Nano ZSP Premium performance system for particle size, zeta potential, molecular weight, protein mobility and microrheology.

Applications: characterization of nanoparticles, colloids and proteins, protein mobility measurements and microrheology of macromolecules.

Measurement types: particle/molecular size, absolute molecular weight, zeta potential, protein mobility and microrheology.

See the Zetasizer Nano ZSP

Zetasizer Nano ZS High performance system for particle size, zeta potential, molecular weight, protein mobility and microrheology.

Applications: characterization of nanoparticles, colloids and proteins.

Measurement types: particle/molecular size, absolute molecular weight, zeta potential and (optional) microrheology.

See the Zetasizer Nano ZS

Zetasizer Nano Z Zeta potential of colloids, suspensions and proteins. Applications: characterization of nanoparticles and colloids Measurement types: zeta potential Zeta potential size range: 3.8nm - 100µm See the Zetasizer Nano Z

Zetasizer Nano ZS90 Entry level system for particle and molecule size, zeta potential, molecular weight. Applications: characterization of nanoparticles and colloids Measurement types: particle / molecular size, absolute molecular weight, zeta potential Zeta potential size range: 3.8nm - 100µm See the Zetasizer Nano ZS90

Malvern solutions for Zeta potential