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Abstract:
An extended section of the Malvern® Instruments website is devoted to colloids and colloidal stability issues. Offering a valuable resource to anyone working in this field, the colloid section now features specific and highly relevant on-demand presentations and downloadable application notes. It also provides background information on the topic and details of the analytical solutions that the company offers: in particular the Zetasizer® Nano particle characterization system and Malvern's range of stress and strain controlled rheometers.

Extended web resource for colloid scientists

Malvern, UK | Posted on December 4th, 2007

The Zetasizer Nano measures two significant colloid parameters - particle size, and zeta potential - both relevant to colloidal stability. It enables non-invasive particle size characterization at high concentration with minimal dilution, and is therefore especially useful for studying aggregates or agglomerates, which are at risk of breakdown when any sample preparation is required.

Malvern's range of rheometers enables accurate and reliable rheological characterization of fluid-like, semi-solid, and solid materials. Patented Rotonetic™ adaptive control technology delivers unsurpassed torque and speed control in all test modes while an extensive range of temperature control options allows quantification of the impact of this important variable.

Colloids are finely dispersed two-phase mixtures widely encountered in everyday life in the form of cosmetics and toiletries, pharmaceuticals, paints, foodstuffs and agrichemicals. Colloidal stability is a critical issue directly linked in many instances with product quality parameters such as shelf life. The development of optimal products is dependent on the accurate measurement of colloid properties and an understanding of the variables affecting them.

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About Malvern Instruments
Malvern® Instruments is a global company that develops, manufactures and markets advanced analytical systems used in characterizing a wide variety of materials, from bulk powders to the latest nanomaterials and delicate macromolecules. Innovative technologies and powerful software produce systems that deliver industrially relevant data enabling customers to make the connection between micro (eg particle size) and macro (bulk) material properties (rheology) and chemical composition (chemical imaging). Malvern laboratory, on-line and in-line solutions are proven in sectors from cement to pharmaceuticals and support the understanding, improvement and optimization of many industrial processes.

Headquartered in Malvern, UK, the company has subsidiary organizations in all major European markets, North America, China, Korea and Japan, key partnerships in India, a global distributor network and a number of applications laboratories around the world.

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