Thermal Desorption Unit – TDU

The GERSTEL TDU is the most versatile analytical thermal desorption system available. Using a "Platform" approach multiple techniques can be used for sample introduction allowing you to quickly respond to critical challenges.

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The GERSTEL Thermal Desorption Unit (TDU) was developed as a dedicated instrument for use with GERSTEL Twister stir bars, but due to continued system development, it now has 6 additional sample introduction techniques for GC and GC/MS analysis. The TDU is used with the GERSTEL Cooled Injection System (CIS) on a GC or GC/MS system to enable ultra-trace analysis of a wide range of samples. The TDU mounts directly onto the CIS, eliminating the need for a transfer line and preventing analytes from contacting active sites and thus provides a completely inert sample path. Transfer of a sample into the TDU can be performed manually or automatically with the MPS TDU Automation Option.

Main Features and Advantages

  • Extremely versatile – 6 sample introduction techniques
  • Automatic Tube Exchange with micro-vial – ATEX
  • Dynamic Headspace – DHS
  • Stir Bar Sorptive Extraction – SBSE – Twister
  • Direct Thermal Desorption
  • Adsorbent Packed Tube Thermal Desorption
  • TF-SPME
  • Hot Injection and Trapping (HIT) for HS and SPME
  • Modular design, easy to add other sample introduction techniques
  • Maestro provides exceptional software control
  • Can be integrated into Agilent Technologies ChemStation
  • Electronic pressure control for ease of use and reproducibility
  • Valveless operation reduces contamination and downtime
  • Short, inert high temperature (350 ºC) flow path
  • Multiple temperature ramps
  • Purges oxygen and water from sample
  • True splitless operation
  • Small footprint – mounts directly on GC
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