---
kind: "section"
citation: "21 C.F.R. § 868.1690"
title: "21"
number: "868.1690"
heading: "Nitrogen gas analyzer."
url: "https://uscodex.org/cfr/21/868.1690"
---

# §868.1690. Nitrogen gas analyzer.

- (a) **Identification.** A nitrogen gas analyzer is a device intended to measure the concentration of nitrogen in respiratory gases to aid in determining a patient's ventilatory status. The device may use techniques such as gas chromatography or mass spectrometry.
- (b) **Classification.** Class II (performance standards).

## Notes

### Authority

Authority: 21 U.S.C. 351, 360, 360c, 360e, 360j, 360 l, 371.

### Source

Source: 47 FR 31142, July 16, 1982, unless otherwise noted.