Rock Eval pyrolysis is a source rock screening tool that measures the concentration of volatile hydrocarbons (S₁) and convertibility of non-volatile organic material to oil and gas (S₂), and estimates the thermal maturity of the rock samples (T_max). Analysis is performed on the powdered rock samples heated at a predetermined rate. So, the quantity of evolved hydrocarbons and CO₂ are monitored as a function of increasing temperature. From the S₁, S₂, S₃, Tmax and TOC content, various ratios are calculated which suggest the type of hydrocarbons a source rock may be capable of generating. This provides an estimate of the maturity and kerogen type that can identify the presence of hydrocarbon shows in the reservoir intervals. PGGRC equipped with the latest version of the Rock-Eval product line, i.e. the Rock-Eval 6, enables the determination of Rock-Eval parameters plus TOC and MinC as it is equipped with an oven for combustion of the rock residue after pyrolysis, FID detector measures the H/C gas released during the pyrolysis and on-line infrared cell is used to measure the quantity of CO and CO₂ generated during pyrolysis and oxidation of samples. A new integrated software (Rocksix), supervises the analyser and allows an easy interpretation of the data.