1. ASTM E681–09, Standard Test Method for Concentration Limits ofFlammability of Chemicals (Vapors and Gases). (2015.
2. ISO 10156,Gasesand gas mixtures - Determination of fire potential and oxidizing abilityfor the selection of cylinder valve outlets. (2010.
3. Coward, H. F.; Jones, G. W.Limits of flammability of gases and vapors; Bulletin 503;U.S. Bureau of Mines, 1952.
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