VICI Pulsed Discharge Detectors
VICI PDDs (pulsed discharge detectors) utilize a stable, low powered, pulsed DC discharge in helium as an ionization source. Eluants from the column, flowing counter to the flow of helium from the discharge zone, are ionized by photons from the helium discharge. The bias electrode(s) focus the resulting electrons toward the collector electrode, where they cause changes in the standing current which are quantified as the detector output. Performance is equal to or better than detectors with conventional radioactive sources.
3D for 8890 GC:
The D-2 is a dual mode, universal detector system which can be retro-fitted to your older GC. The D-2-I is optimized for trace level work in the helium photoionization mode. The stand-alone systems include detector, controller, electrometer, helium purifier, and power supply. Available for 110 VAC and 220 VAC.
VICI model D-3-I-8890 for the Agilent 8890 GC joins the lineup of Pulse Discharge Detectors already available for plug-and-play installation on the Agilent 6890 and 7890. Model D-3 is designed for plug-and-play installation on the popular Agilent 6890, 7890, and 8890 and is optimized for trace level work in the helium photoionization mode. The D-3 utilizes the electronics and power supply of the host GC.