Pulsed discharge detector Model D-3 is designed for plug-and-play installation on Agilent GCs, with models available for the 6890 and 7890. The D-3 is optimized for trace level work in the helium photoionization mode, and utilizes the electronics and power supply of the host GC. The system includes detector cell, pulser, and FID board, plus standard and mini helium purifiers