27 CFR § 30.72 - Recording obscuration by proprietors using the optional method for determination of proof.

---
identifier: "/us/cfr/t27/s30.72"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "27 CFR § 30.72 - Recording obscuration by proprietors using the optional method for determination of proof."
title_number: 27
title_name: "Alcohol, Tobacco Products and Firearms"
section_number: "30.72"
section_name: "Recording obscuration by proprietors using the optional method for determination of proof."
chapter_name: "ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY"
subchapter_number: "A"
subchapter_name: "ALCOHOL"
part_number: "30"
part_name: "GAUGING MANUAL"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "26 U.S.C. 7805."
regulatory_source: "T.D. ATF-198, 50 FR 8535, Mar. 1, 1985, unless otherwise noted."
cfr_part: "30"
---


# 30.72 Recording obscuration by proprietors using the optional method for determination of proof.

Any proprietor using the optional method for determination of proof for spirits containing solids of 400 milligrams or less per 100 milligrams as provided in § 30.71 shall record the obscuration so determined on the record of gauge required by 27 CFR part 19.

(Sec. 201, Pub. L. 85-859, 72 Stat. 1358, as amended, 1362, as amended (26 U.S.C. 5211))