Thermal Desorption Spectrometer TDS 40A1


The TDS 40A1 is designed for Temperature Programmed Desorption (TPD) applications, also known as Thermal Desorption Spectroscopy (TDS). TPD involves heating a sample under UHV conditions and simultaneously measuring a number of desorbing gas species as a function of sample temperature. A custom designed conical sampling end piece ensures the best possible response to desorbing species.


  • Completely programmable
  • Unique filament design
  • Wide operation temperature range
  • Quadrupole MS: 100, 200 or 300 amu
  • Software control (basic version)


  • Software extension – can be integrated with RAPID SE
  • High stability linear shift
  • Differential pumping (1 stage)


Technical data

Mounting flange: DN 40 CF
Bakeout temperature: 250°C
Insertion length: 190 mm, OD: 36.8mm