Surface Zeta Potential Cell eliminates need for dedicated instrument – new Malvern application notes

4 July 2013: Malvern, UK: A series of new application notes posted on the Malvern Instruments website describes the quick and easy measurement of surface zeta potential using the zeta potential planar cell for the Zetasizer Nano particle characterization system. Widely used as an indicator of the stability of particle suspensions and colloidal samples, surface zeta potential is traditionally measured using the specialist technique of streaming potential. Malvern’s Surface Zeta Potential Cell eliminates the need for a dedicated solution, allowing users to measure the zeta potential of surfaces in an aqueous medium on a standard instrument. The application note ‘Determination of the zeta potential of the surface of PTFE’, and others relating to different aspects of the measurement, can now be downloaded from Malvern’s online knowledge center:

Adding the surface zeta potential measurement capability to Zetasizer Nano systems opens up new applications in areas of research that include understanding and optimizing surface coatings, studying biological materials such as teeth and bone, and evaluating the effect of environmental changes on polymers or glass.

In addition to zeta potential measurements, the Zetasizer Nano instruments measure particle and molecular size from below a nanometer to several microns, electrophoretic mobility, and molecular weight. For further information visit:

About Malvern Instruments

Malvern provides the materials and biophysical characterization technology and expertise that enables scientists and engineers to understand and control the properties of dispersed systems. These systems range from proteins and polymers in solution, particle and nanoparticle suspensions and emulsions, through to sprays and aerosols, industrial bulk powders and high concentration slurries. Used at all stages of research, development and manufacturing, Malvern’s materials characterization instruments provide critical information that helps accelerate research and product development, enhance and maintain product quality and optimize process efficiency.

Our products reflect Malvern’s drive to exploit the latest technological innovations and our commitment to maximizing the potential of established techniques. They are used by both industry and academia, in sectors ranging from pharmaceuticals and biopharmaceuticals to bulk chemicals, cement, plastics and polymers, energy and the environment.

Malvern systems are used to measure particle size, particle shape, zeta potential, protein charge, molecular weight, mass, size and conformation, rheological properties and for chemical identification, advancing the understanding of dispersed systems across many different industries and applications.

Headquartered in Malvern, UK, Malvern Instruments has subsidiary organizations in all major European markets, North America, China, Japan and Korea, a joint venture in India, a global distributor network and applications laboratories around the world.

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