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Carbograph 2TD

Parameter Characteristics
Sorbent strength/type very weak carbon black
Specific surface area approx. 12 m2/g
Approx. analyte volatility range n-C8 to n-C20
Example analytes alkyl benzenes, hydrocarbons to n-C20
Sorbent maximum temperature > 400°C
Recommended conditioning temperature 350 to 400°C
Recommended desorption temperature 350 to 400°C (below conditioning temperature)

Further information

  • hydrofobic
  • minimal inherent artifacts (<0.1 ng)
  • some activitity due to trace metals in the charcoal raw materials used for sorbent production
  • friable - susceptible to fines formation when mechanically shocked. Avoid dropping tubes containing these sorbents
  • compressable - overpacking can result in high impedance and adverseley affect pump sampling flows
  • 40/60 mesh is the recommended mesh size for sorbent tubes and cold traps
  • recommended to re-pack tubes after 200 thermal cycles