Belarus standards PDF
Steels. Determination of the depth of decarburization. Original standard BS EN ISO 3887-2023 in PDF full version. Additional info + preview on request
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Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones. Original standard BS EN ISO 389-1-2018 in PDF full version. Additional info + preview on request
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Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones and insert earphones. Original standard BS EN ISO 389-2-1997 in PDF full version. Additional info + preview on request
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Acoustics. Reference zero for the calibration of audiometric equipment - Reference equivalent threshold vibratory force levels for pure tones and bone vibrators. Original standard BS EN ISO 389-3-2016 in PDF full version. Additional info + preview on request
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Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz. Original standard BS EN ISO 389-5-2006 in PDF full version. Additional info + preview on request
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Acoustics. Reference zero for the calibration of audiometric equipment. Reference threshold of hearing for test signals of short duration. Original standard BS EN ISO 389-6-2007 in PDF full version. Additional info + preview on request
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