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Zeta potential is a measure of the magnitude of the electrostatic or charge repulsion/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 offer leading instrumentation for the measuring of zeta potential, or electrophoretic mobility. The Zetasizer Nano provides a simple, fast and accurate way to measure zeta potential, and uses a unique disposable capillary cell to ensure that there is no cross contamination between samples. The NanoSight NS500 measures single particle zeta potential distributions which can be measured simultaneously with particle size, concentration and when operating in fluorescence mode.

Related products

Zetasizer Nano Z Dedicated zeta potential analyzer Image
Measurement
Zeta potential
Particle size range
0.0038µm to 100µm
Technology
Electrophoretic Light Scattering
More information
Zetasizer Nano ZS Performance, simplicity, versatility. Image
Measurement
Molecular size, Molecular weight, Particle size, Zeta potential
Temperature range
0°C to 90°C
Particle size range
0.3nm to 10µm
Dispersion type
Wet
Technology
Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering
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Zetasizer Nano ZS90 Affordable molecular / particle size and zeta potential analyzer. Image
Measurement
Molecular size, Molecular weight, Particle size, Zeta potential
Particle size range
0.3nm to 5µm
Temperature range
0°C to 90°C
Dispersion type
Wet
Technology
Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering
More information
Zetasizer Nano ZSP Sensitivity, simplicity, versatility Image
Measurement
Molecular size, Particle size, Molecular weight, Zeta potential, Protein mobility, Microrheology
Particle size range
0.3nm to 10µm
Temperature range
0°C to 90°C
Dispersion type
Wet
Technology
Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering
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How Do I Dilute My Samples For Zeta Potential Measurements? FAQ

Samples for zeta potential measurements need to be optically clear and may require dilution. The way in which the dilution is performed is absolutely critical in determining the zeta potential value measured.



What is Electroosmosis? FAQ

Electroosmosis is the movement of a liquid relative to a stationary charged surface under the influence of an applied voltage



What is Electrophoresis? FAQ

Electrophoresis is the movement of charged particles under the influence of an applied electric field



What is the Derived Count Rate? FAQ

The derived count rate is the normalized count rate taking into account the attenuation factor used



The Importance of Zeta Potential in Water Treatment Process Control Webinar - Recorded (English)

Control of the flocculation process and adjustment of coagulant dose during the course of water and waste water treatment is often a challenging step in the water treatment process. Zeta potential is a measure of the electrical potential between part...

Product:
Zetasizer WT
Date recorded:
March 17 2016
Language:
English

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