Connecticut Administrative Code
Title 14 - Motor Vehicles. Use of the Highway by Vehicles. Gasoline
327d - Motor Fuel Quality Testing Standards
Section 14-327d-5 - Evidence of original purchase

The invoice, bill of sale, bill of lading, terminal ticket, or other evidence of the purchase of motor fuel, including but not limited to computer produced documents, shall state the name and address of the seller and buyer, the date and time of sale, the grade of the product, the label, name or brand under which it was sold, and the number of gallons sold. All such evidence of purchase shall be signed in ink or other indelible substance by the seller. Documentation shall be maintained for a period not less than one (1) year.