Refurbished Esa Coulochem III electrochemical detector (configured for DC (low) and coulometric mode). OPTIONAL: Guard Cell 5020 p/n 55-0417, Analytical Cell 5010A p/n 70-5560, & microdialysis cell 5014B p/n 70-0520B. The Coulochem III ECD delivers the best in both amperometric and coulometric performance. Potential Range ± 2000 mV in 1 mV steps. Please contact us for complete ESA HPLC detector and warranty details.