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  1. Chromservis
  2. Chromatography
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  4. Thermal desorption sorbents
  5. Tenax GR
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Chromatography

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          Tenax GR

          Parameter Characteristics
          Sorbent strength/type weak porous polymer
          Specific surface area approx. 35 m2/g
          Approx. analyte volatility range n-C7 to n-C30 (BP 100 to 450°C)
          Example analytes aromatic compounds (except benzene), apolar components with BP >100°C, polar components with BP >150°C, PAHs, PCBs
          Sorbent maximum temperature > 350°C
          Recommended conditioning temperature up to 325°C
          Recommended desorption temperature up to 300°C

          Further information

          • hydrofobic
          • low inherent artifacts (<1 ng)
          • inert - suitable for labile compounds
          • Tenax GR (graphitised form) is the best for PAHs and PCBs
          • efficient desorption
          • sorbent maximum temperature must not be exceeded as sorbent will breakdown and vapourise and may contaminate your flowpath
          • 35/60 mesh is the recommended mesh size for sorbent tubes and traps
          • recommended to re-pack tubes after 100 thermal cycles