{"data":{"id":"us/21-cfr-868.6400","jurisdiction":"us","citation":"21 CFR 868.6400","heading":"Calibration gas.","body":"(a) Identification. A calibration gas is a device consisting of a container of gas of known concentration intended to calibrate medical gas concentration measurement devices.\n(b) Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 868.9.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 868—ANESTHESIOLOGY DEVICES","Subpart G—Miscellaneous"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"67e55d760c056ec7d2f89bc60248102ace48b1329ea51004796ac6f22cc2c236","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-868.6250","next":"us/21-cfr-868.6700"},"notice":"GroundRules: Original legal text. Not legal advice."}