Application Useful as a preliminary screening test for solid substances. In view of the complex nature of the ignition and combustion of solids, the self-ignition temperature determined according to this test method should be used for comparison purposes only. Compliance : European Commission Directive 92/69/EEC, method A16: NF T 20-036 (September 85). Chemical products for industrial use. Determination of the relative temperature of the spontaneous flamability of solids