ModuLab XM ECS is an Xtreme Measurement electrochemical test system that is capable of measuring ultra-low, micro-ohm impedance cells (latest generation batteries and fuel cells, for example), while being able to accurately characterize ultra-high impedance corrosion coatings at the other extreme. The system uses a unique AC calibration method that ensures ultimate accuracy in all cases. Each system is independently calibrated, ensuring the accuracy of your results.