Lab and Technical Gases - Airgas.com

Medical Gas Mixtures
Laboratory and Technical Gases
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Laboratory and Technical Gases

Airgas Puritan Medical produces a complete line of certified pure gases for use as carrier, zero and support gases for gas chromatographs (GCs) and other analytical instruments. High purity gases extend the life of GC columns and detectors by limiting contaminants such as oxygen and water that reduce their sensitivity.


Pure gases are analyzed to ensure that impurities do not exceed specified maximum limits. When selecting a pure gas, it is important to know the maximum acceptable level of impurity for the analysis to be performed. Researchers and clinicians that require results in the PPB or PPM range must use Ultra High Purity (UHP) gases, which are certified to a purity of 99.999% and, therefore, contain less than 10 PPM impurities. For results in the full-percentage range, however, High Purity gases, which are certified to a purity of 99.99% (100 PPM) or 99.9% (1000 PPM), should be adequate and are more economical.
  • Acetylene (C2H2)
  • Air
  • Argon (Ar)
  • Carbon Dioxide (CO2)
  • Helium (He)
  • Hydrogen (H2)
  • Nitrogen (N2)
  • Nitrous Oxide (N2O)
  • Oxygen (O2)