Purefuels is a pure plant derivative made from only the purest ethyl alcohol and is of the highest quality fuels available on the market today. Purefuels is the recommended fuel for all Ethanol fireplaces and is a non-toxic, smokeless, odourless and environmentally friendly fuel. One Quart of Purefuels burns for approximately 2 and 5 hours dependant on room conditions, model of fireplace and size of flame. Purefuels burns perfectly clean giving off CO2 and steam in similar proportions as that exhaled by humans. It is tested rigorously and consistently to ensure that air quality complies with the strict international government regulations. Purefuels has been diligently working with laboratories and was thoroughly tested by the U.S. government (TTB) and received a certificate as a safe fireplace fuel for unvented decorative fireplaces acceptable for use in North America. Made in U.S.A.