Electrophoretic Light Scattering (ELS) is a technique used to measure the electrophoretic mobility of particles in dispersion, or molecules in solution. This mobility is often converted to Zeta potential to enable comparison of materials under different experimental conditions.

The fundamental physical principle is that of electrophoresis. A dispersion is introduced into a cell containing two electrodes. An electrical field is applied to the electrodes, and particles or molecules that have a net charge, or more strictly a net zeta potential will migrate towards the oppositely charged electrode with a velocity, known as the mobility, that is related to their zeta potential.

Malvern Panalytical offer leading instrumentation that use electrophoretic Light Scattering for the measurement of electrophoretic mobility. The Zetasizer 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. 

Zetasizer Ultra

Zetasizer Ultra

World’s most advanced light scattering system

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Measurement Molecular size, Molecular weight, Particle concentration, Particle size, Zeta potential, Protein aggregation, Protein mobility
Particle size range 0.3nm - 10µm
Technology Dynamic Light Scattering, Electrophoretic Light Scattering, Multi-Angle Dynamic Light Scattering (MADLS)

Zetasizer Lab

Zetasizer Lab

Entry-level particle size and zeta potential analyzer with enhanced capabilities

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Measurement Molecular size, Molecular weight, Particle concentration, Particle size, Zeta potential, Protein mobility
Technology Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering

Zetasizer Advance Range

Zetasizer Advance Range

Light Scattering for every application

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Measurement Molecular size, Molecular weight, Particle concentration, Particle size, Zeta potential, Protein aggregation, Protein mobility
Technology Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering, Non-Invasive Back-Scatter (NIBS), Multi-Angle Dynamic Light Scattering (MADLS)

Zetasizer Pro

Zetasizer Pro

High performance, versatile and robust

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Measurement Molecular size, Molecular weight, Particle size, Zeta potential, Protein mobility
Particle size range 0.3nm - 10µm
Technology Dynamic Light Scattering, Electrophoretic Light Scattering

Zetasizer WT

Zetasizer WT

On-line zeta potential analyzer for water treatment processes

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Measurement Zeta potential
Temperature range 0°C - 40°C
Technology Electrophoretic Light Scattering

Zetasizer Ultra

Zetasizer Ultra

World’s most advanced light scattering system

Zetasizer Lab

Zetasizer Lab

Entry-level particle size and zeta potential analyzer with enhanced capabilities

Zetasizer Advance Range

Zetasizer Advance Range

Light Scattering for every application

Zetasizer Pro

Zetasizer Pro

High performance, versatile and robust

Zetasizer WT

Zetasizer WT

On-line zeta potential analyzer for water treatment processes

More details More details More details More details More details
Measurement Molecular size, Molecular weight, Particle concentration, Particle size, Zeta potential, Protein aggregation, Protein mobility Molecular size, Molecular weight, Particle concentration, Particle size, Zeta potential, Protein mobility Molecular size, Molecular weight, Particle concentration, Particle size, Zeta potential, Protein aggregation, Protein mobility Molecular size, Molecular weight, Particle size, Zeta potential, Protein mobility Zeta potential
Particle size range 0.3nm - 10µm   0.3nm - 10µm  
Temperature range       0°C - 40°C
Technology Dynamic Light Scattering, Electrophoretic Light Scattering, Multi-Angle Dynamic Light Scattering (MADLS) Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering Dynamic Light Scattering, Electrophoretic Light Scattering, Static Light Scattering, Non-Invasive Back-Scatter (NIBS), Multi-Angle Dynamic Light Scattering (MADLS) Dynamic Light Scattering, Electrophoretic Light Scattering Electrophoretic Light Scattering

Zetasizer Advance Range

Zetasizer WT

Zetasizer Advance Range Zetasizer WT

Light Scattering for every application

On-line zeta potential analyzer for water treatment processes

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Measurement type
Zeta potential
Technology
Dynamic Light Scattering
Electrophoretic Light Scattering
Environment
Environment Lab - bench Process