The Evolved Gas Collection (EGC)™ system from Markes International is a derivative of the UNITY single tube thermal desorber.  When UNITY is combined with the specialised accessories listed below it be used to collect and thermally desorb gases evolved from either a thermogravimetric analyser (TGA) and / or from pyrolysis Micro thermal analysis (µTA) experiments.

As samples decompose, evolved gases from TGA are pumped onto specially designed MacroTubes™ using a suitable pump.

Evolved gases from µTA experiments are pumped onto specially designed MicroTubes™.  A suitable, low-flow pump, such as the FLEC pump is required in this case.

Both types of tube are packed with sorbents and analysed by thermal desorption GC/ GCMS.

Evolved gas analysis is used for a range of applications including studies of degradation mechanisms (for stabilisers; flame retardents; smoke suppressants etc.); polymer characterisation; toxicity studies; catalyst investigations and solid/gas phase reaction studies.

For part numbers and pricing please contact your local Markes distributor or visit our on-line shop.

Relevant technical support publications from Markes International can be automatically downloaded from this web site (registration required). Examples include:

• Brochure - Thermal Desorption and Air Monitoring Products
  

Other thermal desorption sampling accessories available from Markes include: 

Air sampling pumps
MTS-32 sequential tube sampler
Bio-VOC breath sampler
VOC-Mole soil probe 
FLEC cell
µ-CTE Micro-Chamber / Thermal Extractor
Calibration Solution Loading Rig
TC-20 tube conditioner
Pneumatic control accessory
Digital flowmeter
Helium Gas Leak Detector 

Back to sampling accessories home page