Title 21: Food and Drugs
« Home / Title 21 - Food and Drugs--Volume 8 / CHAPTER I - FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) / SUBCHAPTER H - MEDICAL DEVICES
/ PART 868 - ANESTHESIOLOGY DEVICES
/ Subpart B - Diagnostic Devices / § 868.1640 Helium gas analyzer.
§ 868.1640 Helium gas analyzer.
(a) Identification. A helium gas analyzer is a device intended to measure the concentration of helium in a gas mixture during pulmonary function testing. The device may use techniques such as thermal conductivity, gas chromatography, or mass spectrometry.
(b) Classification. Class II (performance standards).