
Acoustics. Hearing protectors. Sound attenuation of hearing protectors. Subjective method of measurement.
NORMA vydána dne 28.6.1991
Designation standards: BS EN 24869-1:1993
Note: NEPLATNÁ
Publication date standards: 28.6.1991
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: British technical standard
Kategorie: Technické normy BS