A series of new reduced-scale compartment fire experiments were conducted, which includedlocal measurements of temperature and species composition. The measurements are unique tothe compartment fire literature. By design, the experiments provided a comprehensive andquantitative assessment of major and minor carbonaceous gaseous species and soot at twolocations in the upper layer of fire in a 2/5 scale International Organization for Standards (ISO)9705 room. The enclosure defined in the international standard ISO 9705 “Full-scale room testfor surface products”  is an important structure in which to conduct fire research. Manydozens of research projects and journal articles have focused on this enclosure and the standarddescribing its use. It is a common reference point for studies of many fire-related phenomena aswell as fire modeling efforts.