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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