JJG 991-2017
Verification regulations for audiometric equipment otoacoustic impedance/admittance measuring instruments (English Version)

Standard No.

JJG 991-2017

Language

Chinese, Available in English version

Release Date

2018

Published By

National Metrological Verification Regulations of the People's Republic of China

Latest

JJG 991-2017

Replace

JJG 991-2004

JJG 991-2017 history

• 2018 JJG 991-2017 Verification regulations for audiometric equipment otoacoustic impedance/admittance measuring instruments
• 2004 JJG 991-2004 Aural Impedance Audiometers