This part of ISO 6184 specifies a method for the determination of the explosion indices of fuels in air (other than dust/air and gas/air mixtures) in an enclosed space. Fuel/air mixtures may be, for example, gas/air/dust mixtures and vaporized liquid/air mixtures. It gives the criteria by which results obtained using other test procedures can be correlated to yield explosion indices as determined by the method specified in this part of ISO 6184.