Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:2018)
NORMA vydána dne 1.4.2020
Designation standards: UNE-EN ISO 4869-2:2020
Publication date standards: 1.4.2020
The number of pages: 28
Approximate weight : 84 g (0.19 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE