StacksVerified U.S. regulatory reference

43 CFR §3175.111

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Samples must be taken by one of the following methods:
    1. (1)Spot sampling under §§ 3175.113 through 3175.115;
    2. (2)Flow-proportional composite sampling under § 3175.116; or
    3. (3)On-line gas chromatograph under § 3175.117.
  2. (b)At all times during the sampling process, the minimum temperature of all gas sampling components must be the lesser of:
    1. (1)The flowing temperature of the gas measured at the time of sampling; or
    2. (2)30 °F above the calculated hydrocarbon dew point of the gas.