OSP470

The HORIBA OSP470 is a scanning potentiometry system that acquires spatially resolved maps of local ion concentration and chemical activity across sample surfaces in electrolyte solution. In potentiometric scanning probe measurements, an ion-selective microelectrode tip (ISE tip) is scanned close to the sample surface and the open-circuit potential at the tip is recorded as a function of position; because the ISE tip responds selectively to a specific ion (H+ for pH, Cl−, Na+, K+, O2, etc.), the measured potential directly reflects the local concentration of that ion in the solution immediately adjacent to the surface. This approach enables quantitative mapping of local pH gradients above corroding metals (where anodic dissolution creates local acidification), oxygen concentration gradients above biological tissues (where cellular respiration depletes local O2), chloride ion activity above passivated stainless steel (revealing pitting initiation sites), and other chemical heterogeneities in complex electrochemical or biological systems. The OSP470 technique is passive (no electrochemical perturbation is applied to the sample), making it suitable for fragile and biologically sensitive samples. The system mounts on the M470 platform, using its high-precision stage for accurate positioning of the ISE probe over the sample. Compatible with multiple ion-selective tip types for H+, O2, Cl−, and other ions. NewRoad provides the HORIBA OSP470 in Israel for corrosion science, environmental electrochemistry, and biophysics laboratories requiring quantitative spatial mapping of local ion concentration and chemical activity.