Page "Differential scanning calorimetry" Paragraph 14

Using differential scanning calorimetry to study the stability to oxidation of samples generally requires an airtight sample chamber.

Usually, such tests are done isothermally ( at constant temperature ) by changing the atmosphere of the sample.

First, the sample is brought to the desired test temperature under an inert atmosphere, usually nitrogen.

Then, oxygen is added to the system.

Any oxidation that occurs is observed as a deviation in the baseline.

Such analysis can be used to determine the stability and optimum storage conditions for a material or compound.