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The VICI Pulsed Discharge Detector (PDD) is a universal, non-destructive, high sensitivity helium photoionization detector (HID/PID). The response to both inorganic and organic compounds is linear over a wide range. Response to fixed gases is positive (increase in standing current), with a minimum detectable quantity (MDQ) in the low ppb range.
The PDD is an ideal replacement for FIDs in petrochemical or refinery environments, where the hydrogen and flame can be problematic. In addition, when the discharge gas is doped with argon, krypton, or xenon (depending on the desired cutoff point), the PDD functions as a specific photoionization detector for selective determination of aliphatics, aromatics, amines, and other species.
The VICI PDD is available in Plug-and-Play versions for the following GC models (using their FID electrometer):
For other GC types we offer a PDD with a separate “stand alone” electrometer.
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