The liquid lithium loop included as part of the EuroFusion IFMIF-DONES facility presents a unique fire risk via the possibility of lithium leaks. While the least reactive of the alkali metals lithium can react violently with oxygen, nitrogen, CO2 and water. This risk doesn’t fit with any typical fire testing apparatus, and so to investigate the potential for fires arising from a leak, and the potential of mitigation measures new apparatus was needed to be designed. This paper documents the design of a new piece of apparatus, consisting of 2 chambers (for preparing and then exposing the lithium to reactants) and a contenting device for melting the lithium. Some initial testing of the apparatus was undertaken and its performance evaluated, with weaknesses identified and a route forward for future studies decided.