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The BIPM key comparison database
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METROLOGY AREA
Ionizing Radiation (56)
Electricity and Magnetism (55)
Mass (51)
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Photometry and Radiometry (21)
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Acoustics, Ultrasound, and Vibration (11)
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TYPE
Key comparisons (192)
Supplementary comparisons (77)
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Approved for equivalence (108)
Approved (65)
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ORGANISATIONS
EURAMET (formerly EUROMET) (130)
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Result of the search
Your query 'Switzerland' produced 269 results New search
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  CCQM- K3 Automotive emission gases
1998 - 1999
Comparison type, Field   Key comparison in Amount of Substance, Gases
Status   Approved for equivalence, Results available
  BIPM.EM- K10.a DC voltage, Josephson standards
1991-
Comparison type, Field   Key comparison in Electricity and Magnetism, DC Voltage and Current
DC voltage: 1.018 V
Status   Continuous, approved for equivalence, Results available
  BIPM.EM- K10.b DC voltage, Josephson standards
1994 -
Comparison type, Field   Key comparison in Electricity and Magnetism, DC Voltage and Current
DC voltage: 10 V
Status   Continuous, approved for equivalence, Results available
  CCEM- K6.a Comparison of AC/DC voltage transfer standards
1993 - 1999
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
  CCEM- K2 Comparison of resistance standards
1996 - 2000
Comparison type, Field   Key comparison in Electricity and Magnetism, Resistance
Resistance: 10 megaohms and 1 gigaohm
Parameter(s)   Voltage: 10 V, 50 V, 91 V or 100 V
Status   Approved for equivalence, Results available
  BIPM.L- K10 Comparison of the frequencies of Helium-Neon lasers at wavelength 633 nm
1988 - 2000
Comparison type, Field   Key comparison in Length, Laser Frequencies
Status   Approved for equivalence, Results available
  EUROMET.L- S14 Steel tape measurements
2003 - 2004
Comparison type, Field   Supplementary comparison in Length, Dimensional Metrology
Tape length from 10 m to 50 m
Status   Approved
  EUROMET.EM.BIPM- K11 DC voltage, Zener diode
1998 - 2000
Comparison type, Field   Key comparison in Electricity and Magnetism, DC Voltage and Current
DC voltage: 10 V
Status   Approved for equivalence, Results available
  EUROMET.EM- S4 Comparison of capacitors
1995 - 1998
Comparison type, Field   Supplementary comparison in Electricity and Magnetism, Capacitance
Capacitance: 100 pF
Parameter(s)   Frequency: 1 kHz or 1.592 kHz
Status   Approved
  EUROMET.EM- S8 Frequency performance of reference resistors for AC quantum Hall experiments
1998 - 2000
Comparison type, Field   Supplementary comparison in Electricity and Magnetism, Resistance
Resistance: 12906.4 ohms and 6453.2 ohms
Parameter(s)   Frequency: 500 Hz to 5000 Hz
Status   Approved
  EUROMET.EM- S11 Comparison of the measurement of current transformers
1999 - 2000
Comparison type, Field   Supplementary comparison in Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer
Parameter(s)   Frequency: 50 Hz
Status   Approved
  EUROMET.EM- S14 Measurement of divider ratios
1999 - 2000
Comparison type, Field   Supplementary comparison in Electricity and Magnetism, DC Voltage and Current
Parameter(s)   DC voltage: 10 kV, 50 kV and 100 kV
Status   Approved
  EUROMET.M.P- K4 Pressure measurements in oil (gauge mode)
1996 -1999
Comparison type, Field   Key comparison in Mass, Pressure
Effective area of a piston-cylinder unit
Parameter(s)   Pressure: 10 MPa to 100 MPa
Status   Approved for equivalence, Results available
  CCQM- K8 Monoelemental calibration solutions of Al, Cu, Fe and Mg
1999 - 2000
Comparison type, Field   Key comparison in Amount of Substance, Inorganics
Status   Approved for equivalence, Results available
  CCQM- K24 Cadmium (Cd) in rice
2001
Comparison type, Field   Key comparison in Amount of Substance, Inorganics
Status   Approved for equivalence, Results available
  EUROMET.EM.RF- K8.CL Power in 50 ohm coaxial lines
2001 - 2002
Comparison type, Field   Key comparison in Electricity and Magnetism, Radio frequencies
Calibration factor of type-N and type-PC7 thermistor mounts
Parameter(s)   Frequency: 10 MHz to 18 GHz (8 discrete values)
Status   Approved for equivalence, Results available
  EUROMET.EM- K11 AC/DC voltage transfer difference at low voltages
2005 - 2008
Comparison type, Field   Key comparison in Electricity and Magnetism, AC Voltage, Current, Power, and AC/DC Transfer
Parameter(s)   Voltage: 10 mV and 100 mV
Frequency: 1 kHz, 20 kHz, 100 kHz, and 1 MHz
Status   Approved for equivalence, Results available
  BIPM.RI(II)- K1.Co- 60 Activity of radionuclide Co-60
1975 -
Comparison type, Field   Key comparison in Ionizing Radiation, Section II (Measurement of Radionuclides)
Status   Continuous, approved for equivalence, Results available
  CCL- K1 Gauge blocks by interferometry
1998 - 1999
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Steel and tungsten carbide materials
Status   Approved for equivalence, Results available
  CCL- K3 Angle standards
2000 - 2002
Comparison type, Field   Key comparison in Length, Dimensional Metrology
Status   Approved for equivalence, Results available