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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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Controlling the dispersion or flocculation of colloidal suspensions through zeta potential Webinar - Live (English)

Many large scale industrial processes (paper production, water treatment and dewatering processes) require de-stabilization or flocculation of dispersed particulates. For other industries and products such as foods, cosmetics, paints and pharmaceutic...

Product:
Zetasizer range
Date:
October 20 2016
Language:
English


Understanding and Controlling the Rheology of Particulate Dispersions Webinar - Live (English)

Many products (or product precursors) in the paint, personal care, cleaning, coatings and food areas, etc., contain large amounts of finely divided solid particulate material dispersed in a liquid matrix. The amount, shape, size distribution and inte...

Date:
September 22 2016
Language:
English


Zeta potential - An important parameter for controlling formulation stability and product performance Webinar - Recorded (English)

Cosmetics, paints, inks, paper, drug delivery, personal care, food or intra-lipid emulsions are made up of multi component chemistries. Most products go through a stage where different phases co-exist such as emulsions, suspensions or dispersions and...

Product:
Zetasizer range
Date recorded:
September 8 2016
Language:
English


NanoSight NS500 Zeta Potential Analysis Technical Note (English)

NanoSight NS500 Zeta Potential Analysis Flow Chart for Use with NTA Software Versions 3.1 and 3.2



How Do I Verify My Zeta Potential Instrument? FAQ

Electrophoretic light scattering (ELS) or zeta potential instruments use first principles in their measurement protocol. They cannot therefore, be calibrated. However, they can be verified that they are operating correctly, by measuring a suitable zeta potential standard.


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Upcoming webinar

Controlling the dispersion or flocculation of colloidal suspensions through zeta potential
(October 20 2016)

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