Which markings must a fuel container bear when storing gasoline or diesel fuel?

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The important idea here is safety certification for containers used to hold flammable fuels. Fuel containers should show that they have been tested and meet recognized standards for safe storage. In North America, the usual marks are UL (Underwriters Laboratories) or CSA (Canadian Standards Association). These logos indicate the container has been evaluated for things like leak resistance, proper venting, materials compatibility, and overall construction to minimize spills and vapor release when holding gasoline or diesel. The CE mark is for Europe and isn’t the standard used in the US/Canada. A DOT symbol relates to transporting hazardous materials, not to consumer storage containers. And claiming no marking is required isn’t accurate because certification marks help ensure the container is safe for storing flammable liquids. So the correct guidance is to choose a container bearing UL or CSA markings.