IS 9167 : 2025 Hearing Protectors - Specification
1 SCOPE
This standard covers the performance requirements for devices for personal hearing protection.
2 REFERENCES
The standards given below contain provisions which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this Indian standard are encouraged to investigate the possibility of applying the most recent edition of these standards:
| IS No. | Title |
| IS 1885 (Part 3) : 2023/IEC 60050-801 : 1994 | International electrotechnical vocabulary (IEV): Part 3 Acoustics and electroacoustics |
| IS 6229 : 1980 | Method for measurement of real-ear protection of hearing protectors and physical attenuation of earmuffs (first revision) |
| IS 7194 : 2018/ISO 1999 : 2013 | Acoustics - Estimation of noise induced hearing loss (second revision) |