Making the benefits of UHPLC separation available with electrochemical detection, the Dionex UltiMate 3000 Electrochemical Detector delivers the high analytical sensitivity needed to measure neurotransmitters for analyzing pharmaceutical compounds, and the selectivity for characterizing complex samples such as supplements, beverages, and biological samples. This detector features coulometric and amperometric sensors designed for simple, flexible and low-maintenance operation. Coulometric sensors are known for their stability, and low maintenance. Amperometric sensors are chosen for their high analytical sensitivity, even with precious, volume-limited samples.