27 C.F.R. § 29.53 – Identification of distilling apparatus.

(a) General. Each still or condenser manufactured will be identified by the manufacturer as follows:
1. (1) Name of manufacturer.
2. (2) Address of manufacturer.
3. (3) Manufacturer's serial number for the apparatus.
(b) Marking requirements. The apparatus will be identified in a legible and durable manner. The required identification marks will be placed on the apparatus in a location where they will not be obscured or concealed.