Atlas

By coupling the Atlas to a ZetaStar or a Mobius, zeta potential measurements can be made on aqueous samples with hundreds of mM NaCl in the buffer, even for proteins and other nanometer-sized particles. Gas bubbles that form as a result of redox reactions in the course of zeta potential measurements cause erratic electrophoretic currents, resulting in noisy signals. It is especially difficult to measure zeta potential on aqueous samples having conductivities near or above physiological saline conditions. The Atlas eliminates bubbles by pressurizing the ZetaStar/Mobius cell, forcing evolved gases back into the solution and enabling robust zeta potential analysis.