| Definition: | minimum energy that can ignite a mixture of a specified flammable material with air, measured by a standard procedure Note 1 to entry: See ASTM E582, Standard Test Method for Minimum Ignition Energy and Quenching Distance in Gaseous Mixtures, for gases and vapours, ISO/IEC 80079-20-2, Explosive atmospheres – Part 20-2: Material characteristics – Combustible dusts test methods, ASTM E2019, Standard Test Method for Minimum Ignition Energy of a Dust Cloud in Air, and EN 13821, Potentially explosive atmospheres — Explosion prevention and protection — Determination of minimum ignition energy of dust/air mixtures, for dust clouds.
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