Skip to left navigation
Skip to page content
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 Instruments offer leading instrumentation for the measurement of 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 electrostatic potential particle-by-particle to produce number-weighted, not intensity-weighted, data, avoiding any bias towards larger particles.
Free access to exclusive content including webinars, presentations, application notes, technical notes, whitepapers and more. Enter your search term in the box and use the drop down boxes to filter the results.
Measure of particle charge is one of the key parameters used by water plant operators to evaluate the required amount of coagulant. This presentation discusses the use of zeta potential measurement and it's advantages as an absolute and s...
Cations are specifically recognized by numerous proteins. Despite their small size, their specific interactions with highly charged residues allow them to induce significant conformational changes on their binding proteins. The protein conformational...
DLS microrheology measurements are particularly suited to the measurement of low viscosity and weakly-structured materials, such as polymer and biopolymer solutions.This technical note gives guidance about how to make a microrheology measurement and ...
This technical note describes the practical aspects to consider when making a microrheology measurement by dynamic light scattering, and how zeta potential can be used as an indicator of the interaction between tracer particle and sample.
Liposomes are fast becoming a preferred vehicle for delivering therapeutic drug molecules to target sites. This article discusses two techniques for the measurement of their size, concentration and zeta potential.
(Webinar - Recorded)
All information supplied within is correct at time of publication.
Malvern Instruments pursues a policy of continual improvement due to technical development. We therefore reserve the right to deviate from information, descriptions, and specifications in this publication without notice. Malvern Instruments shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material.
Malvern and the 'hills' logo, Bohlin, Gemini, Insitec, ISys, Kinexus, Mastersizer, Morphologi, Rosand, SyNIRgi, Viscotek and Zetasizer, are International Trade Marks owned by Malvern Instruments Ltd.