2024-12-4 3.147.36.106
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Standard No. Title Price(USD) Delivery Status Add to Cart
GB/T 4854.1-1999 Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones 150.0 via email in 1~3 business day abolished2004-12-01,2004-12-1,1999-9-1
JJG 2017-2005 Verification Scheme of Measuring Instruments for Underwater Sound Pressure 120.0 via email in 1~3 business day valid,,2005-10-28
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GB/T 4854.1-1999 Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones 
  Issued on: 1999-03-08   Price(USD): 150.0
JJG 2017-2005 Verification Scheme of Measuring Instruments for Underwater Sound Pressure 
  Issued on: 2005-4-28   Price(USD): 120.0
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