Volume plethysmograph.
21 C.F.R. § 868.1760
in effectEffective: 2024-07-01(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).
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-21.xmlFetched: 7/26/2026
