Many studies of inorganic complexes, of polymer degradations and reactions
between samples and reactive gases, have been followed by DTA and DSC. The
oxidation of polyethene is tested by heating samples in oxygen or holding them
isothermally at around 200°C and then changing the surrounding atmosphere to
oxygen and noting the time at which oxidative reaction starts. This is a most
useful test for blue polyethene water pipes.G2 – Differential thermal analysis and differential scanning calorimetry 315