On November 14,2022,an update to the standard UL296 was published by Underwriters Laboratories(UL),which expands its scope to include liquid-fuel-fired burners intended for use with biodiesel blends of 20% to 100%(B20-B100)with heating oil.UL296 is the standard developed by Underwriters Laboratories for safety testing for listing of liquid-fuel-fired burners.
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