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The BIPM key comparison database
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METROLOGY AREA
Mass (17)
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Thermometry (5)
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TYPE
Key comparisons (34)
Supplementary comparisons (9)
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Approved for equivalence (24)
Approved and published (5)
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Your query 'Viet Nam' produced 43 results New search
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  APMP.T- K4.2 Comparison of local realizations of aluminium (Al) freezing-point temperature
2018 - 2019
Comparison type, Field   Key comparison in Thermometry, Fixed Point Cells
Status   Planned
  APMP.M.M- S2 Mass standards
2019
Comparison type, Field   Supplementary comparison in Mass, Mass Standards
Status   Planned
  APMP.EM- K6.a Comparison of AC/DC voltage transfer standards
2000 - 2003
Comparison type, Field   Key comparison in Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer
Parameter(s)   Voltage: 3 V
Frequency: 1 kHz, 20 kHz, 100 kHz and 1 MHz
Status   Approved for equivalence, Results available
  APMP.M.P- K7 Pressure measurements in oil (gauge mode)
2002 - 2004
Comparison type, Field   Key comparison in Mass, Pressure
Pressure: 10 MPa to 100 MPa
Status   Approved for equivalence, Results available
  APMP.M.FF- K2 Hydrocarbon liquid flow (bilateral comparison)
2009
Comparison type, Field   Key comparison in Mass, Fluid Flow
Flow: 5 l/s to 30 l/s
Status   Approved for equivalence
  APMP.M.FF- K6 Low pressure gas flow
2007 - 2008
Comparison type, Field   Key comparison in Mass, Fluid Flow
Parameter(s)   Pressure < 4 105 Pa
Status   Approved for equivalence, Results available
  APMP.M.M- K1 Comparison of mass standards
1999 - 2001
Comparison type, Field   Key comparison in Mass, Mass Standards
Mass: 1 kg
Status   Approved for equivalence, Results available
  APMP.L- K1 Gauge blocks by interferometry
2001 - 2002
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Status   Approved for equivalence, Results available
  APMP.M.FF- K1 Water flow
2009 - 2010
Comparison type, Field   Key comparison in Mass, Fluid Flow
Parameter(s)   Test pipe diameter: 100 mm
Status   Approved for equivalence, Results available
  APMP.M.FF- K4 Liquid volume
2006 - 2008
Comparison type, Field   Key comparison in Mass, Fluid Flow
Water volume: 100 mL and 20 L
Status   Approved for equivalence, Results available
  APMP.EM.RF- S2 Comparison of RF power
1995 - 1998
Comparison type, Field   Supplementary comparison in Electricity and Magnetism, Radio frequencies
Parameter(s)   Frequency: 100 MHz, 1 GHz, 12 GHz and 17 GHz
Status   Published
  APMP.EM- K9 AC/DC transfer difference at higher voltage
2000 - 2004
Comparison type, Field   Key comparison in Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer
Parameter(s)   Voltage: 500 V and 1000 V
Frequency: 1 kHz, 10 kHz, 20 kHz, 50 kHz and 100 kHz
Status   Approved for equivalence, Results available
  APMP.M.H- K1.c Hardness (Vickers 30)
2003 - 2005
Comparison type, Field   Key comparison in Mass, Hardness
Hardness: 200 HV, 600 HV and 900 HV
Status   Report in progress, Draft A
  APMP.L- K1.1 Gauge blocks by interferometry
2005 - 2006
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Status   Approved for equivalence, Results available
  APMP.M.M- K6 Comparison of mass standards
2005 - 2006
Comparison type, Field   Key comparison in Mass, Mass Standards
Mass: 100 mg, 2 g, 20 g, 500 g and 1 kg
Status   Approved for equivalence, Results available
  APMP.M.H- S1 Hardness (Rockwell C)
2004 - 2005
Comparison type, Field   Supplementary comparison in Mass, Hardness
Hardness: 20 HRC to 60 HRC
Status   Approved and published
  APMP.L- K4 Diameter standards
2008 - 2010
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Internal and external diameters
Status   Approved for equivalence, Results available
  APMP.L- K11.1 Comparison of primary wavelength standards
2007
Comparison type, Field   Key comparison in Length, Laser Frequencies
633 nm
Status   Approved for equivalence, Results available
  APMP.T- K3.1 Realizations of the ITS-90 from 234.3 K to 692.7 K
2008
Comparison type, Field   Key comparison in Thermometry, Standard Platinum Resistance Thermometers
Status   Approved for equivalence, Results available
  APMP.QM- K9 pH measurement of phosphate buffer solutions
2009 - 2010
Comparison type, Field   Key comparison in Amount of Substance, Electrochemistry
pH ~ 6.86
Parameter(s)   Temperature: 15 °C, 25 °C and 37 °C
Status   Approved for equivalence, Results available