This method is suitable for the determination of the ignitability of solids. Material is formed into an unbroken strip or powder train. An ignition source is applied to one end of the test material to determine whether combustion will propagate within a specified time period. If propagation occurs, material is submitted to a burning rate test. In the burning rate test, burning time is measured over a distance and a burning rate is determined. Materials that do not ignite or propagate combustion do not require further testing.