In Alfatestlab we are experts in nano-systems characterization. Particle size, particle concentration and charge are of fundamental importance to assess nano-systems suitability for the intended application. Alfatestlab provides different analytical techniques to measure the hydrodynamic diameter, the Zeta potential, the concentration of dispersions of sub-micron particles, as well as the rheological properties of the dispersions. Knowing these parameters allow to optimize of the formulation process, to determine the effectiveness of stabilizing agents, to characterize the finished products, to verify and to understand possible problems of stability. Alfatestlab provides reliable, accurate and reproducible results thanks to the deep knowledge of strengths and limitations of each analytical technique, ensuring a correct preparation of the samples. The decennial experience of Alfatest allows us to support the customer in all the project phases and to provide the right characterization solution for each application.