---
kind: "section"
citation: "43 C.F.R. § 3175.45"
title: "43"
number: "3175.45"
heading: "Gas chromatographs."
url: "https://uscodex.org/cfr/43/3175.45"
---

# §3175.45. Gas chromatographs.


GCs that meet the standards in §§ [3175.117](/cfr/43/3175.117.md) and [3175.118](/cfr/43/3175.118.md) for determining heating value and relative density are approved for use.


## Notes

### Source

Source: 81 FR 81609, Nov. 17, 2016, unless otherwise noted.

### Authority

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.

### Source

Source: 81 FR 81421, Nov. 17, 2016, unless otherwise noted.