The carrier, upon request of shipper made prior to the delivery date, shall reweigh the shipment. The carrier shall inform the person requesting the reweighing of the tariff charges therefor and, without altering or deleting the initial weights, shall cause to be recorded on the bill of lading, the gross, tare and net weight on reweighing in the same manner as set forth in § 31.125 (relating to obtaining weight tickets) for initial weighing. The lower of the two net scale weights shall be used for determining the applicable charges. The carrier shall publish in its tariff a reasonable charge for reweighing, and such charge shall be paid by the shipper requesting reweighing.
52 Pa. Code § 31.126