Photoionization Articles

  • Choosing the correct PID lamp

    The two most common lamps used in PhotoIonization Detectors (PIDs) are 10.6 eV and 11.7 eV lamps. The 11.7 eV lamp measures the broadest range of compounds while the 10.6 eV lamp is more selective. To allow higher energy light to pass through, 11.7 lamps are manufactured with a cylindrical window (the flat surface at the top of the lamp) that deteriorates quickly – even when not in use. ...

  • Ultra-Sensitive Coal Tar Distillate Analysis by GC-PID

    The distillation of Naphthenes and Coal Tars results in a complex array polynuclear aromatics, or which many do not show up in an analysis by GC-TCD or FID because they are at trace levels in the sample. In some cases these trace products are valuable and in sufficient quantity to warrant recovery. In order to discover hidden profits like this a GC equipped with a photo-ionization detector is ...

    By Buck Scientific Inc

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