27 C.F.R. § 19.616
(a) Required records. A proprietor must maintain records of all samples taken under §§ 19.434 and 19.435. The sample record must show the:
(b) Sample schedule. When a proprietor takes samples pursuant to an established schedule, the proprietor may maintain the schedule as the required record if it contains the information required by paragraphs (a)(2) through (a)(7).
(26 U.S.C. 5207)