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Electrophoretic Light Scattering

Electrophoretic Light Scattering (ELS) is a technique used to measure the electrophoretic mobility of particles in dispersion, or molecules in solution. It is used as an indicator for sample stability and/or propensity to aggregate.

The technique uses an electric field that is applied to a solution of molecules or a dispersion. This causes the particles to move at a certain speed from which mobility and zeta potential can be calculated. Mobility is often converted to Zeta potential to enable comparison of materials under different experimental conditions, eg changes in pH or concentration.

ATA Scientific offers a range of particle sizing instruments that employ three types of light scattering technologies – dynamic, static and electrophoretic light scattering.

The Zetasizer Pro, Ultra build on the heritage Nano series from Malvern Panalytical. The Zetasizer Nano series are among the world’s most widely used dynamic light scattering instruments. By combining dynamic light scattering with Non-Invasive Back Scatter technology and Phase Analysis Light Scattering (M3-PALS), the Zetasizer series provides the highest sensitivity for the measurement of particle and molecule size and zeta potential. 

The addition of Constant Current Mode in the Zetasizer Pro and Ultra for measuring electrophoretic mobility and zeta potential in high conductivity media reduces the likelihood of errors associated with charge screening at higher ion concentrations.

At ATA Scientific we sell innovative instruments from leading manufacturers in the particle, surface, life and material sciences. Our suppliers include some of the world’s most well-regarded companies such as Malvern Panalytical, Phenom World, Biolin Scientific, Avestin. Precision Nanosystems, Phasefocus and Nanolane.

Our scientific instruments are used by Universities, the CSIRO and by companies in a range of different industries including the pharmaceutical, polymer, chemical and mining sectors. We also provide our clients with long term support to ensure they get the best out of our products and services. Over the past 27 years, ATA Scientific has provided a range of technical services including operator training, preventative maintenance and instrument breakdown repair.

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