Superior ECD performance through design and application

A new ECD, the HP 6890 Series Micro-ECD, was designed to address inherent d eficiencies in classical electron capture detectors (ECD), especially with respect to sensitivity, linearity, dynamic range, and ruggedness. Several n ovel technologies were incorporated in the totally new design and were refi ned through practical testing and user feedback. Validation of the micro-EC D performance was accomplished through side-by-side testing of the Micro-EC D with previous ECDs following US EPA Contract Laboratory Program methods f or pesticides and PCBs, In addition, extensive interviews were conducted wi th early users of the Micro-ECD who also had experience with other designs running a variety of ECD methods. The design and resulting performance impr ovements are described.