VICI’s Pulsed Discharge helium ionization Detector (PDD) extends the detection capabilities of the Agilent 6890 and 7890 GCs.
The PDD Model D-3 is suited 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 to provide high sensitivity. It is suitable for use with columns from 50 micron capillaries to 1/8 in. packed.
The detector’s response is linear over a wide range, and MDQs for most compounds are in the low ppb range. The detector has no open flame, no hydrogen requirement, and close-to-true-mass response, suiting it for FIDs in petrochemical environments. When the helium discharge gas is doped with a suitable noble gas, the detector functions as a lampless, windowless photoionization detector.
Valco Instruments Co., Inc., www.vici.com