4.3.1 Place the specimen horizontally on a metal
tripod stand with the upper surface of the specimen facing downwards
(i.e. with normally exposed face on underside) such that the height
of this surface of the specimen is approximately 8mm below the top
of the burner flame. Apply the burner flame at right angles to the
plane of the specimen in the centre of specimen. After one minute
the burner flame is to be removed clear of the specimen and the time
in seconds to extinction of any flaming is to be recorded.
4.3.2 The test in paragraph 4.3.1 is to be repeated
after any flaming or smouldering has ceased and the temperature of
the specimen has returned to normal except that the centre of the
burner flame is to be positioned at the midpoint of any edge of the
specimen. Again the time in seconds to extinction of any flaming after
the removal of the burner is to be recorded.