Acoustics--Pure tone air conductionthreshold audio-metry--For hearing conservation purposes

Norma vydána dne 27.3.1987

Acoustics—Hearing protectors—Part 1: Subjective method for the measurement of sound attenuation

Norma vydána dne 27.2.2026

Acoustics—Hearing protectors—Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn

Norma vydána dne 27.2.2026

Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture

Norma vydána dne 30.12.2011

Acoustics—Hearing protectors—Part 5: Method for estimation of noise reduction using fitting by inexperienced test subjects

Norma vydána dne 27.2.2026

Acoustics—Hearing protectors—Part 6: Determination of sound attenuation of active noise reduction earmuffs

Norma vydána dne 27.2.2026

Earth-moving machinery—Hydraulic excavators—Test methods

Norma vydána dne 28.12.2018

Safety rules for the construction and installation of lifts—Part 1Passenger and goods passenger lifts

Norma vydána dne 14.12.2020

Safety rules for the construction and installation of lifts—Part 2: Design rules, calculations, examinations and tests of lift components

Norma vydána dne 14.12.2020

Code of Chinese ideograms set forinformation interchange--The 2nd supplementary set

Norma vydána dne 27.3.1987