This bench scale experimental setup is used for acquiring kinetic data up to a pressure of 120 bar and temperatures up to 350°C. It consists of a three-phase gradient-free continuously stirred tank reactor (CSTR), equipped with an annular catalyst basket, and is typically used for studying hydrotreating and hydrocracking reactions with fossil or circular feedstocks, such as pyrolysis oil from plastics and bio sources. The RM setup is built to handle feeds, which contain various kinds of sulphur, nitrogen and oxygen compounds. Analysis of the effluent stream is performed with a Trace 1310 Gas chromatograph (Thermo Scientific). It is equipped with three channels, i.e. two thermal conductivity detectors (TCD) and one flame ionization detector (FID). The TCD and FID channels can be used for the complete analysis of effluent gas and liquid samples.