43 CFR § 3175.111 - General sampling requirements.

---
identifier: "/us/cfr/t43/s3175.111"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 3175.111 - General sampling requirements."
title_number: 43
title_name: "Public Lands: Interior"
section_number: "3175.111"
section_name: "General sampling requirements."
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "C"
subchapter_name: "MINERALS MANAGEMENT (3000)"
part_number: "3170"
part_name: "ONSHORE OIL AND GAS PRODUCTION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 396d and 2107; 30 U.S.C. 189, 306, 359, and 1751; and 43 U.S.C. 1732(b), 1733, and 1740."
regulatory_source: "81 FR 81421, Nov. 17, 2016, unless otherwise noted."
cfr_part: "3170"
---


# 3175.111 General sampling requirements.

(a) Samples must be taken by one of the following methods:

(1) Spot sampling under §§ 3175.113 through 3175.115;

(2) Flow-proportional composite sampling under § 3175.116; or

(3) On-line gas chromatograph under § 3175.117.

(b) At all times during the sampling process, the minimum temperature of all gas sampling components must be the lesser of:

(1) The flowing temperature of the gas measured at the time of sampling; or

(2) 30 °F above the calculated hydrocarbon dew point of the gas.