ISO-Certified Ignitability Test Apparatus for Building Materials YY510 Building Material Ignitability Test Apparatus Description Ignitability test, also called single-flame source test. Test apparatus corresponds to standard EN ISO 11925-2. Test results of the building structure can be classified according to standard 13501-1. The dimensions of the test specimens shall be (250) mm long by (90) mm wide. 45°-tilted burner is advanced horizontally until the flame (length 20 mm)