Zetasizer with a titration system and a cell for measuring the zeta potential on a solid

Zetasizer Nano ZS (Malvern Instruments Ltd., Worcestershire, UK) is a device used to characterize such materials as nanoparticles, colloids, proteins, liposomes and microemulsions. The analyzer allows to obtain physicochemical parameters: particle size, molecular weight and zeta potential. This device uses widely used techniques such as: dynamic light scattering, electrophoretic light scattering and static light scattering for the full analysis of distributed systems with nanometric dimensions. The Zetasizer is additionally equipped with an MPT-2 autotitrator and a degasser. It is used to automatically measure particle size/zeta potential as a function of pH, conductivity or additive concentration. The autotitrator is equipped with a glass electrode for pH measurement and can dispense up to three titrants in one experiment. We also have a cell for measuring the zeta potential of solids. The cell is capable of measuring the zeta potential of flat surfaces such as filter paper, silica, polymers and bones using the standard Zetasizer Nano system. Surface and interface characterization is critical in many industries, including consumer products, specialty chemicals, pharmaceuticals and life sciences. In each of these areas, the interaction of solution molecules with surfaces can affect the material properties of the final product.