UFL stands for various terms. Discover the full forms, meanings, and possible interpretations of UFL across different fields and industries.
The highest concentration of a vapor or gas (the highest percentage of the substance in air) that will produce a flash of fire when an ignition source (heat, arc, or flame) is present. At concentrations higher than the UFL, the mixture is too rich to burn. Also known as the Upper Explosive Limit (UEL).
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