ION SOURCES

ION SOURCES

Electrically Heated, Thermionic Ceramic Ion Sources

low cost, long lifetime NPD ion sources (compatible with Thermo, Agilent, & some other NPDs),  plus other selectivity choices interchangeable in NPD equipment (O, Halogens, CH2 Groups, etc.) factory conditioned & tested - minimal GC downtime needed for interchange replacements

*Part numbers listed are for Hex mounting. for 1/4 tube mounting, use 110 as first 3 digits)

  • TID-2 (010-902-00) - NPD

    Selective response to N,P compounds - Black ceramic coating has long life and minimal tailing of phosphorus compounds - operates at 600 - 800oC in a dilute H2in air gas environment - sub picogram detection for NP compounds - lower cost alternative to Agilent NP sources. 

  • TID-4 (010-904-00) - NPD

     best coating for selective detection of N compounds (not recommended for P compounds because of some tailing) - operates at same NPD conditions as TID-2 with larger N response.

  • TID-10 (010-910-00)

    Selective response to Oxygenates (especially Acids, Cannabinoids, Phenols, & Glycols), Nitro-compounds, some Halogenates, Thiols, Pyrrole functional group, and other electronegative functionalities - operates at 300 - 500oC in inert (N2) or oxidizing (air, O2) gas environments – best signal-to-noise when polarized at -45 Volts or higher as available from a DET Current Supply or Thermo NPD electronics. TID-10 is also the key element used in the Catalytic Combustion Ionization (CCID) mode which is selective to compounds containing chains of Methylene (CH2) groups in Petroleum Hydrocarbons, FAMEs, or Triglycerides with no response to Aromatic or Cyclo-Hydrocarbons and with discrimination between compounds containing Saturate vs. Unsaturated Carbon bonds, as well as Linear vs. Branched Chain compounds.

  • TID-3 (010-903-00)

    Selective response to Volatile Halogenates - more uniform response to halogenates than TID-10 - operates at 600 - 800oC in inert (N2) or oxidizing (air, O2) gas environments - low picogram detection for Trihalomethanes with minimal peak tailing and greater response for Br versus Cl – best sensitivity when polarized at -45 Volt or higher.

  • TID-5 (010-905-00)

    Halogen selective detection - more uniform response than TID-3 - operates at same temperatures and gas environment conditions as TID-2, but with a polarization voltage of -45 V or higher – also provides exceptional selectivity for Br and I versus Cl when configured with a stoichiometric mixture of Hydrogen and Air (e.g., H2 = 5, Air = 12.5, N2 makeup = 30 mL/min).

  • TID-6 (010-906-00)

    P selective detection with suppressed N response - uses much higher Hydrogen, Air, and Nitrogen flows than the TID-2 and TID-4 NPD modes, and uses a detector structure with an internal upstream restrictor to prevent flashback to a self sustaining flame (e.g., H2 = 20, Air = 200, N2 makeup = 100 mL/min).

  • TID-7 (010-907-00)

    Green Ceramic for Halogenated Pesticides, PCBs - operates in N2, Air, or O2 - best sensitivity when polarized at –45 V or higher.

  • CFID (020-901-00)

    High work function for operation downstream of a flame in a Remote FID detection mode which is selective to compounds containing P, Pb, Sn, or Si atoms. Selectivity improved by using a Hydrogen-Methane flame. Also used in a Catalytic Flame Ionization mode for Universal Detection.

  • FID Probe (020-902-00)

    Uncoated Pt alloy wire used for Universal Detection in FID or HWCID (Hot Wire Combustion Ionization) mode.

Share by: