ISO Ignitability Test. Round Robin Test Results (English)

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Common household materials, e.g., nylon carpet and expanded polystyrene, were tested according to ISO procedure. Glass reinforced polyester, hardboard, and PVC (rigid) were also tested with a 20 mm airgap behind the specimen. Ignition times are plotted against irradiance levels of 10, 20, 30, 40 and 50 kw/sq m. Problems occur with polystyrene: since it ignites only after melting, the ignitability of the solid was not determined. A change in the wrapping procedure is advocated, i.e., wrapping the sample and the already wrapped baseboard together with one sheet of aluminum foil and then cutting a hole in the foil.