Thermo Scientific ESA Coulochem III Electrochemical Detector (ECD) P/N: 70-9142

Manufacturer: ESA / Thermo Scientific Model: esa Coulochem III Condition: Pre-owned Warranty: 30 day Test Performed: Listing ID# 37201

This Thermo Scientific ESA Coulochem III Electrochemical Detector is the standard for electrochemical detection that has greater sensitivity, selectivity, and as wide a dynamic range. 

Don’t let the name fool you, Thermo Scientific ESA Coulochem III offers you a choice – the only ECD system on the market that delivers the best in both amperometric and coulometric performance – giving you the capability you need for your specific application. The Coulochem III provides the options necessary for performing pulsed amperometric detection and cyclic voltammetry for maximum flexibility.

The most sensitive, sophisticated electrochemical detector available, the Coulochem III is ideal for use in methods development or for routine applications requiring high-sensitivity detection of a single or a small group of analytes.

The Coulochem III offers three operational modes:

  • DC Mode—for high-sensitivity analyses, electrochemical synthesis, and enhanced ionization
  • Pulsed Amperometric Mode—for carbohydrate analyses
  • Scan Mode—for characterization of an analyte’s electrochemical behavior


Detector Configuration DC Potentiostat for 1or 2 electrodes and/or Scan Mode/Pulse Mode; Potentiostat for Guard cell
Operating Modes DC, Pulse, Scan
Potential Range ± 2000 mV in 1 mV steps
Full Scale Current Range 10 pA to 1 mA in 1-2-5 sequence (DC mode)
Filter Time Constants 0.2 to 10 seconds in 1-2-5 sequence (DC mode)
Output Noise <750 fA (0.75 pA) with a 500 MΏ, 0.47 µF test load and a 2 second filter (DC Mode)
Signal Output ± 100 mV; ± 1 V
Function Keys Autozero, Event marker, Cell On/Off, Run/Stop
Interface USB, RS-232C Interface Capability
Full parametric instrument control of DC and Pulse
Method Storage Up to 25 methods (any combination of DC, Scan, Pulse, and Time line)
Output Resolution 24 bit bipolar
Guard Cell Potentials ± 200 mV in 1 mV steps
Coulochem Module: Dimensions and Weight 28.6 × 23 × 49.5 cm (11.25 × 9 × 19.5 in);
6.7 kg (14.8 lbs) Detector only
Power 100-120 V, 60 Hz; 230-240 V, 50 Hz
Certifications UL, CSA, CE

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