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The Perfect Companion for Trace Gas Analyzers:

It will purify noble gases down to below 10 ppb level (<1 ppb version available) fed from standard UHP Grade Gas.  This purifier is used to provide premium quality carrier gas for all types of Gas Chromatographs.  No need for multiple traps mounted in series.

  • Lower background noise in chromatographic applications.
  • Increases sensitivity in low impurity chromatographic applications.
  • Protects some columns from moisture and oxygen.
  • High quality gas generated at very low cost.
  • Improves calibration accuracy for zero reference.
  • Proper care has been paid to H2 release by gettering material.  Your GP-200 will not release H2 which
    would cause instrument baseline shift or noise.


  • Carrier gas purifier.
  • Zero gas generator for calibration of on-line analyzers.
  • Reference gas generator for TCD Analyzers.
  • Mass Spectrometer
  • Perfect for all kinds of detectors: Plasma,HID,DID,FID,PDID,TCD,ECD, ect..

Product Description:

The Contrôle Analytique GP-200  Purifier removes H2O, O2, CO, CO2, N2, THC, CH4 and H2 to sub ppb levels in the heated mode and H2O, O2, CO, CO2 and H2 at room temperature operation from all inert gases, including Nitrogen.  

The GP-200 gas purifier is designed to purify noble gases.  These are Helium, Neon, Argon, Krypton, Xenon.  It can be used to supply carrier gas to gas chromatographs or generate zero calibration gas for various gas analysers.

The purification process is done in 2 steps.  One at elevated temperature and the other
at ambient temperature.  The heated vessel will effectively remove the specified impurities.  However there is some possibility of H2 being released by the first step of purification under some conditions.

There are 2 sources of H2, one present in the gas to be purified and the other coming from the dissociation of Hydrocarbons.  Since the H2 is not optimally chemisorbed at elevated temperature, the second purification process will absorb any H2 coming out of the first purification process.
Some other purifiers will overcome the H2 release problem by cooling a part of the gettering alloy.  However, it is not a 100% safe solution.  So we prefer to use a two step process instead, to try to do all the job in one step.


Nominal Specifications:

GP-200 series:

Gases Purified: Ar/He/Ne/Xe/Kr
Impurities removed (heated): H2O, O2, CO, CO2, N2, THC, H2, CH4
Impurities removed (room temp):  H2O, O2, CO, CO2, H2
Impurity levels:
Nominal Flows: 200 cc/min
Fittings: 1/8 Compression fitting or 1/4" VCR
Electrical supply: 120 Vac or 220 Vac, maximum 25 watts

 The GP-200 series of gas purifier is manufactured from stainless steel.


Part Numbering:
GP-200 - XXX X-X
Basic Series Purifier Operating Voltage: 120AC or 220AC  Options:
  -S: Shield Option
  -C: NIST Traceable Cert.

Example: GP-200-120-C
Noble gas purifier operating at 120 volts AC and shipped with a certificate of traceability to NIST reference