JJG 991-2004
Aural Impedance Audiometers (English Version)
- Standard No.
- JJG 991-2004
- Language
- Chinese, Available in English version
- Release Date
- 2004
- Published By
- National Metrological Verification Regulations of the People's Republic of China
- Status
- 2018-05
- Replace By
- JJG 991-2017
- Latest
- JJG 991-2017
JJG 991-2004 history
- 2018 JJG 991-2017 Verification regulations for audiometric equipment otoacoustic impedance/admittance measuring instruments
- 2004 JJG 991-2004 Aural Impedance Audiometers
