The stainless steel nut is heated to a temperature of 900°C in a muffle furnace. The specimen is placed inside the test chamber and the clamping rig is placed onto the sample using crucible
tongs supplied. The heated nut is placed in the centre of the clamping rig. After 30 seconds the nuts removed and the effects of the ignition allowed to subside. Measurements are then made to assess
the spread of the ignition on the sample. It is recommended that the test chamber is placed in a laboratory fume hood. The conditioned specimens are placed on the removable base inside the test
chamber and the metal plate with a circular cut-out is placed on the sample. The tablet is placed at the centre of the specimen and ignited. After the flame has extinguished, measurements are taken
to assess the effects