R.I. Gen. Laws § 21-2.1-1: Calibration, testing, and sealing of farm milk holding tanks — Fees.

The capacity of every farm milk holding tank (when used as a measure) shall be calibrated, tested, and sealed by the director of labor and training. The fee for this calibration shall be five dollars ($5.00) plus a fee of one-half cent ($0.005) per gallon for its determined total capacity.