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The BIPM key comparison database
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METROLOGY AREA
Mass (9)
Length (6)
Amount of Substance (4)
Electricity and Magnetism (3)
Thermometry (2)
TYPE
Key comparisons (24)
STATUS
Approved for equivalence (24)
ORGANISATIONS
APMP (23)
AFRIMETS (SADCMET expansion) (1)
Result of the search
Your query 'Viet Nam' produced 24 results New search
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  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- 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.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.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
  APMP.M.F- K2.a Medium force measurements
2007 - 2014
Comparison type, Field   Key comparison in Mass, Force
Status   Approved for equivalence, Results available
  APMP.QM- K19 pH measurement of borate buffer solutions
2013
Comparison type, Field   Key comparison in Amount of Substance, Electrochemistry
Parameter(s)   Temperature: 15 °C, 25 °C and 37 °C
Status   Approved for equivalence, Results available
  APMP.L- K6 Two-dimensional coordinate measuring machine artefacts
2006 - 2008
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Status   Approved for equivalence, Results available
  APMP.L- K8 Calibration of surface roughness standards
2008 - 2010
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Status   Approved for equivalence
  APMP.T- K7.1 Comparison of water triple point cells
2011 - 2012
Comparison type, Field   Key comparison in Thermometry, Fixed Point Cells
Temperature: 273.16 K
Status   Approved for equivalence, Results available