---
kind: "section"
citation: "40 C.F.R. § 1065.248"
title: "40"
number: "1065.248"
heading: "Gas divider."
url: "https://uscodex.org/cfr/40/1065.248"
---

# §1065.248. Gas divider.

- (a) **Application.** You may use a gas divider to blend calibration gases.
- (b) **Component requirements.** Use a gas divider that blends gases to the specifications of [§ 1065.750](/cfr/40/1065.750.md) and to the flow-weighted concentrations expected during testing. You may use critical-flow gas dividers, capillary-tube gas dividers, or thermal-mass-meter gas dividers. Note that your overall gas-divider system must meet the linearity verification in [§ 1065.307](/cfr/40/1065.307.md).

## Notes

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 70 FR 40516, July 13, 2005, unless otherwise noted.