The jet-stirred reactor is a type of ideal continuously stirred-tank reactor which is well suited for gas phase kinetic studies. It is mainly used to study the oxidation and the pyrolysis of hydrocarbon and oxygenated fuels. These studies consist in recording the evolution of the conversion of the reactants and of the mole fractions of reaction products as a function of different parameters such as reaction temperature, residence time, pressure and composition of the inlet gas. Gas chromatography is classically used for the analysis of the species in the gas phase, but recent studies aimed at coupling new types of analytical devices to a jet-stirred reactor to observe new types of species and to gain accuracy in the identification and the quantification of species.