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BS - British national standards
Page 3145
BS EN ISO 4869-2:2018 (27/11/2018)
Acoustics. Hearing protectors. Estimation of effective A-weighted sound pressure levels when hearing protectors are worn.
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BS EN ISO 4869-2:2018-TC (26/02/2020)
Tracked Changes. Acoustics. Hearing protectors. Estimation of effective A-weighted sound pressure levels when hearing protectors are worn.
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BS EN ISO 4869-3:2007 (31/08/2007)
Acoustics. Hearing protectors. Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture.
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BS EN ISO 4869-4:2000 (15/08/2000)
Acoustics. Hearing protectors. Measurement of effective sound pressure levels for level-dependent sound-restoration ear muffs.
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BS ISO 4869-6:2019 (05/02/2019)
Acoustics. Hearing protectors. Determination of sound attenuation of active noise reduction earmuffs.
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BS ISO 487:1998 (15/09/1998)
Steel roller chains, types S and C, attachments and sprockets.
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BS EN 487:2009 (30/09/2009)
Aluminium and aluminium alloys. Rolling ingots. Specifications.
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BS EN ISO 4871:2009 (31/05/2010)
Acoustics. Declaration and verification of noise emission values of machinery and equipment.
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BS 4872-1:1982 (30/11/1982)
Specification for approval testing of welders when welding procedure approval is not required. Fusion welding of steel.
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BS 4872-2:1976 (30/04/1976)
Specification for approval testing of welders when welding procedure approval is not required. TIG or MIG welding of aluminium and its alloys.
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