Typical pyrolysis GC/MS may be considered time consuming for some analysts. Evolved gas analysis (EGA), which is used to study gas evolved as a sample is heated, can more quickly reveal details of a polymer. This can be done by using uncoated fused silica installed in place of a column, so thermal decomposition products are sent almost immediately to the detector. Resulting information is like thermogravimetric analysis (TGA), except mass spectral information is collected instead of weight loss information, and spectra at different temperatures can reveal the character of decomposition products as they evolve. EGA is also useful to select temperatures for multi-step pyrolysis. In this presentation, EGA is combined with multi-step pyrolysis to differentiate between different polymers.