Examples are given of how the Rapid Screening Device (RSD) can give vital information to allow safe processing, safe storage and safe transportation of hazardous and potentially exothermic materials. The RSD is a new technique of relatively low cost but rapidly and safety will give quality temperature and pressure data on any exothermic (and endothermic) reaction up to 6 samples may be tested simultaneously. The RSD is an ideal first instrument for a company investing in chemical safety measurement. It is easy to use and the data produced is simple to understand. Applications (as given) range from low energy to high energy reactions; eg chemicals, monomers, reactive mixtures, propellants or explosives. 快速篩選量熱儀