The Mettler-Toledo TGA/DSC1 system is suitable for the characterization of the thermal behaviour of the raw materials and pharmaceutical products. The analysis of the gases produced is carried out with a Pfeiffer mass spectrometer. The main performance characteristics include: temperature range from room temperature to 1100°C; heating rate: 0.01-50°K/min). The DSC stand-alone system works in the temperature range: -60 - 450 °C and is suitable for a modulated program too. The MS system applies multiple ion detection in min. 128 channels with long-lasting double filament in a mass range of 1-300 amu. It has a low detection value (<1ppm) and transfer line temperatures up to 350°C. The inclusion of TG, DSC and MS data is possible in a uniform coordinate system.