Ohio Rev. Code § 4933.06: Minimum heating value of natural gas.

Except as otherwise provided in arrangements approved under section 4905.31 of the Revised Code, natural gas delivered to customers shall have a heating value of not less than nine hundred British thermal units per cubic foot when measured in the laboratory by direct heat release or by chemical composition, according to the procedures of the American society for testing and materials or other recognized analytical methods in effect on the effective date of this section.