Refurbished Esa Coulochem II 5200 electrochemical detector with ESA 5011 Analytical Cell (p/n 55-0434). Cell options available. This detector is designed to provide qualitative and quantitative information about the electroactive species in a sample which have been separated by HPLC. Please contact us for complete ESA HPLC detector, warranty and service contract details. (ESA 5200A)