The exothermic peak by the crystallization appears in about 100℃ besides the baseline shift accompanying an endothermic peak by the glass transition at about 60℃ for the amorphous substance. However, these thermal behaviors do not appear for the crystalline substance.

Furthermore, the endothermic peaks caused by the fusion are seen in around 150℃, but it is presumed that crystalline forms are different because the difference can be observed in peak shapes to each other.

Thus, the crystalline substance or the amorphous substance can be judged by detecting the exothermic peak by the crystallization and the baseline shift by the glass transition.