19 CFR § 10.131 - Circumstances in which applicable.

---
identifier: "/us/cfr/t19/s10.131"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "19 CFR § 10.131 - Circumstances in which applicable."
title_number: 19
title_name: "Customs Duties"
section_number: "10.131"
section_name: "Circumstances in which applicable."
chapter_name: "U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY"
part_number: "10"
part_name: "ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC."
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "19 U.S.C. 66, 1202 (General Note 3(i), Harmonized Tariff Schedule of the United States (HTSUS)), 1321, 1481, 1484, 1498, 1508, 1623, 1624, 4513."
regulatory_source: "28 FR 14663, Dec. 31, 1963, unless otherwise noted."
cfr_part: "10"
---


# 10.131 Circumstances in which applicable.

The provisions of §§ 10.131 through 10.139 are applicable in those circumstances in which the rate of duty applicable to merchandise is dependent upon actual use, unless there is a specific provision in this part which governs the treatment of the merchandise. However, specific marking or certification requirements, such as those for bolting cloths in section 10.58, may be applicable to merchandise subject to the provisions of sections 10.131-10.139.

[T.D. 71-139, 36 FR 10726, June 2, 1971, as amended by T.D. 86-118, 51 FR 22515, June 20, 1986]