Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 4760-1995 Acoustics-Measurement procedure for silencers 210.0 via email in 1~3 business day valid
GB/T 16407-2006 Acoustics - Characteristics and measurements of field of Pressurepulse lithotripters 260.0 via email in 1~3 business day valid
JJG 2050-1990 Measuring Instruments for Ultrasonic Power 120.0 via email in 1~3 business day valid
JJG 1019-2007 Verification Regulation of Working Standard Microphones (Coupler Comparison Method) 270.0 via email in 1~3 business day valid
JJF 1034-2005 Metrological Terms and Their Definitions for Acoustics 705.0 via email in 1~5 business day valid
JJG (电子) 12037-1991 DF-5990A Type Loudspeaker Resonance Frequency Gauge (Trial Implementation) 75.0 via email in 1~3 business day valid
JJG 947-1999 Verification Regulation of Acoustic Tide Gauge 180.0 via email in 1~3 business day valid
JJG 991-2004 Verification Regulation of Aural Impedance Audiometers 300.0 via email in 1~3 business day valid
JJF 1276-1990 O.T.N of Primary Standard for Watt Level Ultrasonic Power 60.0 via email in 1~3 business day valid
JJF 1269-1990 O.T.N. of the Primary Standard for the Sound Pressure of Reciprocity Technique 45.0 via email in 1~3 business day valid
JJG (电子) 04053-1995 Verification Regulation of QO3 Type Noise Figure Metering Device 210.0 via email in 1~3 business day valid
GB/T 16540-1996 Acoustics-Measurement and characterisation of ultrasonic fields in the frequency range 0.5MHz to 15MHz-Hydrophone method 450.0 via email in 1~3 business day valid
GB/T 16404.2-1999 Acoustics—Determination of sound power levels of noise sources using sound intensity—Part 2:Measurement by scanning 270.0 via email in 1~3 business day valid
JJG (石油) 10-2000 Verification Regulation of Testing Instrument with Double-Channel Echo 150.0 via email in 1~3 business day valid
GB/T 3767-1996 Acoustics - Determination of Sound Power Levels of Noise Sources Using Sound Pressure - Engineering Method in an Essentially Free Field over a Reflecting Plane 240.0 via email in 1 business day superseded
JJF 1223-2009 Calibration Specification for Standing Wave Tubes(Method Using Standing Wave Ratio) 300.0 via email in 1~5 business day valid
JJG (电子) 12042-1995 Verification Regulation of 925D/2 Type Video Noise Gauge (Trial Implementation) 120.0 via email in 1~3 business day valid
JJG 2037-2004 Verification Scheme of Measuring Instruments for Air Borne Acoustics Pressure 135.0 via email in 1~3 business day abolished
GB/T 7966-2009 Acoustics—Ultrasonics power measurement—Radiation force balances and performance requirements 580.0 via email in 1~3 business day valid
GB/T 20242-2006 Acoustics - Procedures for the measurements of real-ear acoustical characteristics of hearing aids 285.0 via email in 1~3 business day valid
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