According to the standardised procedures of the DIN 4102-1 and the DIN EN 11925-2, as well as to the classification according to DIN EN 13501-1, the inflammability of materials through a small flame („match-flame “) is determined in the fire-box.
After a flame impingement period of 15 s, the material is classified on the basis of different prescriptive criterions as class E, F or B2.