The Stabino II uses a unique mechanism for fast measurement of particle properties such as Zeta Potential, streaming potential, conductivity, pH, and temperature from 0.3nm to 300um particles and concentration up to 40% volume. The fast continuous measurement can be done while titrating the sample with acids of bases to get a complete profile of the particle behavior under different conditions. By combining the Stabino II with the NanoFlex II, it is also possible to track the change in particle size, in correlation with its electrical properties.