21 C.F.R. § 874.3310 Hearing aid calibrator and analysis system.
Title 21 - Food and Drugs
(a) Identification. A hearing aid calibrator and analysis system is an electronic reference device intended to calibrate and assess the electroacoustic frequency and sound intensity characteristics emanating from a hearing aid, master hearing aid, group hearing aid or group auditory trainer. The device consists of an acoustic complex of known cavity volume, a sound level meter, a microphone, oscillators, frequency counters, microphone amplifiers, a distoration analyzer, a chart recorder, and a hearing aid test box. (b) Classification. Class II.
Title 21: Food and Drugs
PART 874—EAR, NOSE, AND THROAT DEVICES
Subpart D—Prosthetic Devices
§ 874.3310 Hearing aid calibrator and analysis system.
