19 CFR §151.10
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
When necessary, an authorized CBP official may obtain samples of merchandise for appraisement, classification, or other official purposes. Samples shall be taken by Customs or a commercial gauger approved in accordance with § 151.13. Samples shall be marked to ensure identification and retained according to established policies.