Thermo-gravimetric Analysis (TGA), abbreviated as TGA, is one of the modern methods for measuring the properties of chemical materials, especially polymers. The Polymer Laboratory of Razi Metallurgy Research Center has recently launched the German TGA model TG 209F3 NETZSCH, one of the best brands of this device, and is ready to provide services to the country’s industries. The applications of this modern device are as follows: • Determining temperature changes and weight changes resulting from decomposition reactions under controlled conditions • Determining the moisture content in the sample • More precise identification of polymeric materials • Measuring glass fibers and mineral fillers • Determining the amount of carbon black • Measuring the decomposition temperature • Determining the amount of plasticizers