This paper summarizes measuring principles and results of the quasi-isothermal, quasi-isobaric measuring techniques, i.e. thermogravimetry (Q-TG), differential thermal analysis (Q-DTA), dynamic differential calorimetry (Q-DDC), differential scanning calorimetry (Q-DSC), thermo-dilatometry (Q-TD), evolved gas analysis (Q-EGA), and micro-distillation under quasi-isothermal, quasi-isobaric conditions.