Thermogravimetric analysis

Do you want to analyse your sample with TGA ? The Calnesis laboratory carries out these measurements over a wide temperature range.


Thermogravimetric analysis (TGA) is a thermal analysis technique that measure the mass of a sample when its subject to temperature variations. This is achieved by using a high-precision balance. A sample of few mg is placed in a crucible on a measuring rod. The rod is placed in an oven in which a sweeping gas ( air, oxygen, nitrogen,… ) circulates.

TGA allows the observation of thermal decomposition, evaporation, reduction, desorption, sublimation, oxidation, absorption,… The TGA makes it possible to qualify the thermal stability of the sample. Its also makes it possible to determinate the temperature at which chemical reactions take place. Its can be used to measure certain volatile compounds in a solid sample.


Coupled TGA

TGAs are often coupled to a DSC measurement. A thermocouple is also placed under the reference and measuring crucible. This coupling makes it possible to determine whether the mass losses are associated with exothermic, endothermic or athermic phenomena

The TGA can be coupled to a Wetsys system, which is a moisture generator for the sweep gas.

Finally, the TGA can be coupled with a gas chromatograph (GC) and/or a mass spectrometer (MS). This type of coupling is used to identify compounds that are entrained by a carrier gas during the experiment.


Call the Calnesis team to have more information about TGA or to get a quote.

To do so, use the form in the footer or in our contact page. You will be contacted by our team as soon as possible.


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