Microcor ® technology greatly increases sensitivity and speed of response over conventional electrical resistance (ER) systems. It combines the rapid response of linear polarization resistance (LPR) with the universal applicability of ER metal loss, measuring reliably conductive or non-conductive environments. The battery powered Microcor ML-9500B Data-Logger adds autonomous power and data collection for applications where direct on-line operation is not possible. This system is ideal for remote locations, for low corrosion rate systems, and for rapid deployment to analyze unexpected corrosion problems.