Acoustics — Hearing protectors — Part 6: Determination of sound attenuation of active noise reduction earmuffs
NORMA vydaná dňa 1.2.2019
Designation standards: ISO 4869-6:2019
Publication date standards: 1.2.2019
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: International technical standard
Kategória: Technické normy ISO