Matec's ESA 9800 uses acoustic attenuation spectroscopy to measure the electrokinetic and surface charge properties of concentrated colloidal dispersions. Combined with standard potentiometric titration techniques, the electrophoretic mobility, surface charge density, and iso-electric points of colloidal particles in concentrated suspensions can be determined. Both aqueous and non-aqueous systems can be measured and in addition, simultaneous pH, conductivity and temperature on still, flowing or stirred samples can be made. The ESA 9800 made the study of colloidal stability simple and straightforward.
Beckman Coulter DelsaNano C - Combining both zeta potential measurement and particle size measurement, the DelsaNano is the only ELS system available to measure samples, in most cases, without the need for dilution. Patented optical technology allows the zeta potential distribution – not just average – to be determined on suspended materials and surfaces. SOP based software makes routine analysis quick and simple. An optional 3 burette titrator makes stability and additive studies straightforward and disposable cells minimise potential contamination or carryover. From proteins to paint, the DelsaNano makes measurements easy. Learn about the innovative technology at http://www.beckman.com/coultercounter/eLearning.jsp
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