Abstract
Comparative study has been carried out between the IS09705 room corner test and the revised Japanese model box test, which was recently accepted as a new work item by the ISO/TC92/SC1 (Reaction-to-fire). The comparison shows general capability of the revised model box test to predict the conditions for the occurrence of flashover in the IS09705 test and the maximum doorway CO concentration after the flashover within the fire scenario behind the IS09705.