21 C.F.R. § 868.1760 Volume plethysmograph.
Title 21 - Food and Drugs
(a) Identification. A volume plethysmograph is an airtight box, in which a patient sits, that is used to determine the patient's lung volume changes. (b) Classification. Class II (performance standards).
Title 21: Food and Drugs
PART 868—ANESTHESIOLOGY DEVICES
Subpart B—Diagnostic Devices
§ 868.1760 Volume plethysmograph.