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The BIPM key comparison database
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METROLOGY AREA
Electricity and Magnetism (55)
Ionizing Radiation (55)
Mass (49)
Length (47)
Photometry and Radiometry (21)
Amount of Substance (15)
Acoustics, Ultrasound, and Vibration (11)
Thermometry (10)
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TYPE
Key comparisons (190)
Supplementary comparisons (74)
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Approved for equivalence (107)
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EURAMET (formerly EUROMET) (127)
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Result of the search
Your query 'Switzerland' produced 264 results New search
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  AFRIMETS.M.M- K7 Comparison of mass standards
2019
Comparison type, Field   Key comparison in Mass, Mass Standards
Status   Planned
  EURAMET.T- K8 Comparison in high dew-point temperatures
2008 - 2012
Comparison type, Field   Key comparison in Thermometry, Humidity
Status   Report in progress, Draft A
  EURAMET.M.FF- S9 Air speed
2014
Comparison type, Field   Supplementary comparison in Mass, Fluid Flow
Low air speed : 0.05 m/s to 1 m/s
Status   Approved and published
  CCM.FF- K6.2017 Low pressure gas flow
2017 - 2019
Comparison type, Field   Key comparison in Mass, Fluid Flow
Status   In progress
  EURAMET.PR- K6.2015 Spectral regular transmittance
2016 - 2018
Comparison type, Field   Key comparison in Photometry and Radiometry, Properties of materials
Status   In progress
  CCPR- K4.2017 Luminous flux
2017 - 2018
Comparison type, Field   Key comparison in Photometry and Radiometry, Photometry
Status   In progress
  EURAMET.T- K6.2 Comparison of humidity standards: dew and frost point temperatures
2017
Comparison type, Field   Key comparison in Thermometry, Humidity
Status   Planned
  CCAUV.A- K6 Primary pressure calibration of laboratory standard microphones LS2P
2019 - 2020
Comparison type, Field   Key comparison in Acoustics, Ultrasound, and Vibration, Acoustics
Status   Protocol complete
  CCM.F- K23 Force mesaurements
2019 - 2020
Comparison type, Field   Key comparison in Mass, Force
Parameter(s)   Force in compression
Status   Planned
  CCRI(II)- S14.Rn- 222 Activity of radionuclide Rn-222
2018
Comparison type, Field   Supplementary comparison in Ionizing Radiation, Section II (Measurement of Radionuclides)
Status   Report in progress, Draft A
  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   Ongoing, 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   Ongoing, 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 and published
  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   Published
  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   Published