NF X 70-100
Tube furnace toxicity test used to determine the Conventional Index of Toxicity (CIT) for non-listed railway products.
NF X 70-100: Toxicity Test Apparatus
The test apparatus and conditions for this method are described in NF X 70-100-2, with additional gas analysis information provided in EN 45545-2. The exposure conditions of the test specimen in the tube furnace are generally set at 600°C, a fixed ventilation condition which represents a developing fire condition for railway products.
The NF X 70-100 is used when the CIT for a product on a railway vehicle is required for non-listed products, e.g. minor mechanical components. Products with large areas or significant surface areas — e.g. interior walls, floor coverings, seat backs and coverings — use the EN ISO 5659-2 with FTIR (EN 17084).
The test conditions specified for use when performing EN ISO 5659-2 or NF X 70-100 depend upon the application and position of the product on the railway vehicle. The conditions selected are representative of fires that may impact on the railway product, during either the developing stages or the developed stage of a fire inside or outside the railway vehicle.
Sample dimensions, quantities, mounting, substrate and conditioning requirements for this test are confirmed with you before testing begins. Contact our technical team for the sample requirements for your product.
BS EN ISO 5659-2 · ASTM E662
Determines the specific optical density of smoke generated by solid materials and assemblies in a closed chamber.
ISO 19702 · EN 17084
Fourier-transform infrared analysis of toxic fire effluents — the method chosen by ISO, EN and IMO committees for measuring toxic species.
Send us a datasheet or a short description of your product and we will tell you exactly which tests apply, before any testing is booked.
