Particles in the solution are surrounded by an electric double layer (EDL) that characterizes the inter-particle interactions.
The measurement of zeta potential is directly related to the charged environment of particles and provides information about dispersion stability. This is widely used for chemical synthesis and particle functionalization. In the design of dip cells, sample preparation has become simple and easy, preventing the formation of bubbles. It is compatible with standard cuvette cells and has made various materials available, such as polystyrene, glass, or quartz, which are fully compatible with organic solvents. The innovative glass carbon electrode has been made long-lasting, and non-oxidizing electrodes can be easily cleaned with standard treatments such as ultrasonic baths or acid-base cleaning. WALLIS has optimized the dip cell electrode design to prevent artifacts like the electrokinetic effect caused by suppressive solvents that induce displacement along the walls of the cuvette. As a result, software correction for measurement signals is not necessary.
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basic information
- Accurate values of zeta potential to predict and control dispersion stability - Useful for composition - High precision and reproducibility - An easy and innovative micro-electrophoresis cell concept from CORDOUAN that eliminates the electroosmotic effect CORDOUAN electrodes for zeta potential cells made from glass-based carbon materials. This material is resistant to corrosion from high salt samples such as saline solutions. It avoids the risk of oxidation, is easy to clean and rinse, and has a long lifespan. WALLIS is a high-resolution zeta potential analyzer. Using dedicated data collection and analysis, it offers unique high-resolution features such as: - Electrophoretic mobility of ~10^-10 m²/V.s - Zeta potential resolution of ~0.1 mV (in water)
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Applications/Examples of results
WALLIS's high resolution enables the following high-quality measurements: - Accurate measurement of IEP - Accurate functional characterization of colloids - Reproducibility of particle synthesis - Advanced particle stability analysis
Company information
We have over 40 years of history as a specialized import trading company, excelling in laser light sources, optical components, measuring instruments, and peripheral devices.
