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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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Acoustics. Reference zero for the calibration of audiometric equipment. Reference threshold of hearing under free-field and diffuse-field listening conditions. Original standard BS EN ISO 389-7-2019 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 circumaural earphones. Original standard BS EN ISO 389-8-2004 in PDF full version. Additional info + preview on request

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Acoustics. Reference zero for the calibration of audiometric equipment. Preferred test conditions for the determination of reference hearing threshold levels. Original standard BS EN ISO 389-9-2009 in PDF full version. Additional info + preview on request

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Conversion coatings on metallic materials. Determination of coating mass per unit area. Gravimetric methods. Original standard BS EN ISO 3892-2001 in PDF full version. Additional info + preview on request

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