StacksVerified U.S. regulatory reference

21 CFR §868.1800

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Identification. A rhinoanemometer is a device used to quantify the amount of nasal congestion by measuring the airflow through, and differential pressure across, a patient's nasal passages.
  2. (b)Classification. Class II (performance standards).