4450 PID/FID TANDEM PHOTOIONIZATION/FLAME IONIZATION GC DETECTOR The 4450 Tandem PID/FID is a patented combination detector incorporating the 4430 Photoionization and 4410 Flame Ionization Detectors. The two detectors in tandem produce simultaneous chromatograms for aromatics and aliphatics, eliminating the need for two separate analyses. Since the Tandem PID/FID occupies only one detector port, two 4450s can be installed on one GC, providing twice the throughput using an OI Analytical dual channel electrometer. The Tandem PID/FID can be used with either packed or capillary columns. Operating Principle: The sample stream elutes from the GC column into the 4430 PID reaction chamber where it is continuously irradiated with high-energy ultraviolet light. Compounds with a ionization potential lower than the irradiation energy (10.2 electron volts with a standard lamp) become ionized. An electronic field collects the ions formed, producing an ion current that is amplified and output • Massachusetts VPH • ISO 15009 and 15680 • Standard Methods 620 • Underground Storage Tank Monitoring

TANDEM PHOTOIONIZATION/FLAME IONIZATION GC DETECTOR Tandem PID/FID Capabilities: The PID is a non-destructive detector, and the compounds retain • Patented tandem design uses only one GC detector port. their structural and elemental characteristics. The sample stream • Tandem design acquires two simultaneous chromatograms passes directly from the 4430 PID exhaust port into the 4410 FID jet. The analytes are combusted in a hydrogen-air flame. The ionized combustion products pass through a negatively biased annular electrode, producing an ion current proportional to the from a single injection....