CCL-K11
MEASURAND Absolute frequency
WAVELENGTH 633 nm, 532 nm and 1542 nm
Degrees of equivalence represented by Di = (xI - xR)/xR and its expanded uncertainty Ui at a 95 % level of confidence.
All data represents measurements at 633 nm except when explicitly indicated.
*Artefact based on the 13C2H2 P(16) (ν1+ν3) transition.
Click here for the enlarged graph.
CCL-K11
MEASURAND Absolute frequency
WAVELENGTH 633 nm, 532 nm and 1542 nm
Degrees of equivalence represented by Di = (xI - xR)/xR and its expanded uncertainty Ui at a 95 % level of confidence.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
× 1012 |
× 1012 |
× 1012 |
||
| MIKES | -3.4 | 44 | ||
| BEV | -2.3 | 52 | ||
| CENAM | 22 | 51 | ||
| INMETRO | 2.2 | 42 | ||
| INTI | -2.9 | 42 | ||
| DZM/LFSB | -14 | 52 | ||
| CMS/ITRI | -5.9 | 55 | ||
| MSL | -9.5 | 47 | ||
| NIM | 2.1 | 42 | ||
| NIMT | -11 | 52 | ||
| A*STAR | -4.2 | 26 | ||
| NML-SIRIM | -17 | 52 | ||
| SCL | -1.8 | 55 | ||
| NMIJ | 11 | 48 | ||
| SMU | -2.6 | 43 | ||
| NIS | 5.9 | 51 | ||
| KazStandard | 4.9 | 51 | ||
| NIST | -0.6 | 7.4 | ||
| SMD | -1.4 | 52 | ||
| BIM | -23 | 72 | ||
| NPLI | 1.9 | 64 | ||
| SNSU-BSN | -20 | 63 | ||
| SASO-NMCC | -0.3 | 51 | ||
| VSL | 2.1 | 8.1 | ||
| GUM | 19 | 51 | ||
| INM | 19 | 51 | ||
| IPQ | 19 | 51 | ||
| UME | 19 | 51 | ||
| MIRS | -9.8 | 52 | ||
| NMISA | 12 | 43 | ||
| EIM | -8.0 | 44 | ||
| BFKH | 0.3 | 53 | ||
| DMDM | 3.1 | 51 | ||
| METAS | 0.6 | 51 | ||
| CMI | -2.2 | 11 | ||
| CMI (532 nm) | 3.8 | 4.1 | ||
| LNE-LCM/Cnam | -11 | 51 | ||
| SMU | -1.4 | 42 | ||
| JV | 0.8 | 45 | ||
| RISE | -50 | 51 | ||
| NPL | -31 | 51 | ||
| CEM | 1.0 | 51 | ||
| INRIM | 15 | 32 | ||
| DFM (1542 nm)* | -12 | 61 |
All data represents measurements at 633 nm except when explicitly indicated.
*Artefact based on the 13C2H2 P(16) (ν1+ν3) transition.
| Metrology area, Sub-field | Length, Laser Frequencies |
| Description | Comparison of optical frequency and wavelength standards |
| Time of measurements | 2008 - |
| Status | Continuous, approved for equivalence |
| References |
Technical Protocol v3.0 (2021) |
| Measurand | Absolute frequency |
| Comparison type | Key Comparison |
| Consultative Committee | CCL (Consultative Committee for Length ) |
| Conducted by | CCL (Consultative Committee for Length ) |
| Comments | Most recent update published on 15 June 2022. The Final Report for each bi-lateral comparison is listed in the tab "Participants". First results published on 19 August 2010 This key comparison is the follow-up of the BIPM key comparison BIPM.L-K11 that ended in 2006. |
| Pilot institute |
BEV
Bundesamt für Eich- und Vermessungswesen Austria |
| Contact person | Michael MATUS +43 1 21110 826540 |
| Pilot laboratory | |
|---|---|
| BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
| Acting as node | |
| Mar 2009 |
Node lab: BEV Standard: BEV1 |
| BFKH |
Government Office of the Capital City Budapest, Hungary, EURAMET |
| Aug. 2010 |
Node lab: NMIJ-AIST Standard: MKEH-1 |
| Feb. 2020 |
Node lab: BEV Standard: BFKH-1 |
| BIM |
Bulgarian Institute of Metrology, Bulgaria, EURAMET |
| Jun. 2014 |
Node lab: BEV Standard: WEO M200 1013 |
| CEM |
Centro Español de Metrologia, Spain, EURAMET |
| Oct. 2011 |
Node lab: BEV Standard: CEM2 |
| Sep. 2023 |
Node lab: BEV Standard: CEM-2 |
| CENAM |
Centro Nacional de Metrologia, Mexico, SIM |
| Sep. 2009 |
Node lab: NRC Standard: CENAM1 |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| Mar. 2011 |
Node lab: BEV Standard: PLO3 |
| Nov. 2021 |
Node lab: BEV |
| CMS/ITRI |
Industrial Technology Research Institute/Center for Measurement Standards, Chinese Taipei, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: NML-04 |
| DFM |
Danish Fundamental Metrology A/S, Denmark, EURAMET |
| Oct. 2023 |
Node lab: MIKES Standard: DFM2846 |
| DMDM |
Directorate of Measures and Precious Metals, Serbia, EURAMET |
| Jun. 2011 |
Node lab: BEV Standard: DMDM-1 |
| Aug. 2021 |
Node lab: BEV |
| DZM/LFSB |
DZM / Laboratory for Precise Measurement of Length; now: FSB-LPMD: Faculty of Mechanical Engineering and naval architecture, Laboratory for precise measurement of length, Croatia, EURAMET |
| Dec. 2009 |
Node lab: BEV Standard: LFSG6 |
| EIM |
Hellenic Institute of Metrology, Greece, EURAMET |
| Jan. 2019 |
Node lab: BEV Standard: EIM-1 |
| GUM |
Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET |
| Dec. 2007 |
Node lab: MIKES Standard: GUM1 |
| Dec. 2015 |
Node lab: MIKES Standard: GUM1 |
| INM |
National Institute of Metrology, Romania, EURAMET |
| Aug. 2016 |
Node lab: BEV Standard: INM PMT/HE/97 |
| INMETRO |
Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM |
| Sep. 2009 |
Node lab: NRC Standard: INMETRO PR-020 |
| INRIM |
Istituto Nazionale di Ricerca Metrologica, Italy, EURAMET |
| Sep. 2023 |
Node lab: BEV Standard: IMGC4 |
| INTI |
Instituto Nacional de Tecnologia Industrial, Argentina, SIM |
| Sep. 2009 |
Node lab: NRC Standard: INTI1 |
| IPQ |
Instituto Portugues da Qualidade, Portugal, EURAMET |
| Nov. 2016 |
Node lab: BEV Standard: IPQ3 |
| JV |
Justervesenet, Norway, EURAMET |
| Mar. 2012 |
Node lab: MIKES Standard: JV Sno 121 |
| Apr. 2023 |
Node lab: MIKES Standard: JV L-01 |
| KazStandard |
Kazakhstan Institute of Standardization and Metrology, Kazakhstan, COOMET |
| Nov. 2011 |
Node lab: BEV Standard: KazInMetr |
| LNE-LCM/Cnam |
Conservatoire National des Arts et Métiers/Laboratoire Commun de Métrologie, France, EURAMET |
| May 2022 |
Node lab: BEV Standard: INM9 |
| METAS |
Federal Institute of Metrology, Switzerland, EURAMET |
| Jul. 2010 |
Node lab: BEV Standard: EAM-2 |
| Aug. 2021 |
Node lab: BEV |
| MIKES |
VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus, Finland, EURAMET |
| Acting as node | |
| Dec. 2007 |
Node lab: MIKES Standard: MRI3 |
| MIRS |
Metrology Institute of the Republic of Slovenia, Ministry of the Economy, Tourism and Sport, Slovenia, EURAMET |
| Mar. 2009 |
Node lab: BEV Standard: MIRS1 |
| Nov. 2018 |
Node lab: BEV Standard: MIRS1 |
| MSL |
Measurement Standards Laboratory, New Zealand, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: MSL-1 |
| NIM |
National Institute of Metrology, China, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: NIM-P1 |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: NIMT-1 |
| NIS |
National Institute for Standards, Egypt, AFRIMETS |
| Mar. 2011 |
Node lab: BEV Standard: NIS-134 |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| Aug. 2012 |
Node lab: NRC Standard: WEO155/NIST |
| NMC, A*STAR |
National Metrology Centre, Agency for Science, Technology and Research, Singapore, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: 156 |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| Acting as node | |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: NMIJ-O6 |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| Dec. 2012 |
Node lab: BEV Standard: WEO200 SN1008 |
| Nov. 2018 |
Node lab: BEV Standard: NMISA-MUFASA |
| NML-SIRIM |
National Metrology Laboratory, SIRIM Berhad (became NMIM), Malaysia, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: NML-SIRIM-1 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| Acting as node | |
| Jan. 2013 |
Node lab: NPL Standard: NPL-R18 |
| June. 2023 |
Node lab: NPL Standard: NPL-R18 |
| NPLI |
CSIR National Physical Laboratory of India, India, APMP |
| Jul. 2014 |
Node lab: NMIJ-AIST Standard: CSIR-NPL-I(1) |
| NRC |
National Research Council, Canada, SIM |
| Acting as node |
| RISE |
Research Institutes of Sweden AB, Sweden, EURAMET |
| May 2012 |
Node lab: MIKES Standard: SP2 |
| Apr. 2023 |
Node lab: MIKES Standard: RISE2 |
| SASO-NMCC |
National Measurement and Calibration Center - Saudi Standards, Metrology and Quality Organization, Saudi Arabia, GULFMET |
| Nov. 2014 |
Node lab: BEV Standard: SASO-NMCC-1 |
| SCL |
Standards and Calibration Laboratory, Hong Kong, China, APMP |
| Apr. 2010 |
Node lab: NMIJ-AIST Standard: LTRP-0051-BW |
| SMD |
Service de la Métrologie Belge, Belgium, EURAMET |
| Jan. 2013 |
Node lab: NPL Standard: LAS633.002 |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| Jun. 2010 |
Node lab: BEV Standard: SMU-1 |
| Sept. 2022 |
Node lab: BEV Standard: SMU-1 |
| SNSU-BSN |
National Measurement Standard - National Standardization Agency of Indonesia, Indonesia, APMP |
| Jul.2014 |
Node lab: NMIJ-AIST Standard: KIM-1 |
| UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
| Nov. 2009 |
Node lab: BEV Standard: UME-L3 |
| Oct. 2013 |
Node lab: BEV Standard: UME-L3 |
| Dec. 2017 |
Node lab: BEV Standard: UME-L3 |
| VSL |
VSL, Netherlands, EURAMET |
| Jun. 2015 |
Node lab: MIKES Standard: NMi-5 |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
CCL-K11
MEASURAND Absolute frequency
WAVELENGTH 633 nm, 532 nm and 1542 nm
The key comparison reference value xR and its associated standard uncertainty uR are represented by the absolute frequency determination carried out of the reference standard during the comparison.
The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in relative terms:
Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence where Ui = 2 ui. Here xi represents the frequency indicated by the institute i.
CCL-K11
MEASURAND Absolute frequency
WAVELENGTH 633 nm, 532 nm and 1542 nm
xi relative frequency difference obtained by by laboratory i, Labi
Ui expanded uncertainty of xi at 95 % level of confidence (k = 2)
All data represents measurements at 633 nm except when explicitly indicated.
| Country | Labi | Standard | xi × 1012 | Ui ×1012 | Date of measurement | |
| Finland | MIKES | MRI3 | -3.4 | 43.8 | Dec. 2007 | |
| Poland | GUM | GUM1 | -24.5 | 55.8 | Dec. 2007 | |
| Slovenia | MIRS | MIRS1 | 6.3 | 54.0 | Mar. 2009 | |
| Austria | BEV | BEV1 | -2.3 | 52.4 | Mar. 2009 | |
| Mexico | CENAM | CENAM1 | 21.7 | 50.6 | Sep. 2009 | |
| Brazil | INMETRO | INMETRO PR-020 | 2.2 | 42.2 | Sep. 2009 | |
| Argentina | INTI | INTI 1 | -2.9 | 42.2 | Sep. 2009 | |
| Türkiye | UME | UME-L3 | 16.3 | 18.2 | Nov. 2009 | |
| Croatia | DZM/LFSB | LFSB-1 | -14.4 | 52.0 | Dec. 2009 | |
| Czech Republic | CMI | PLO3 | -0.4 | 13.9 | Mar. 2010 | |
| Chinese Taipei | CMS/ITRI | NML-04 | -5.9 | 54.9 | Apr. 2010 | |
| New Zealand | MSL | MSL-1 | -9.5 | 47.4 | Apr. 2010 | |
| China | NIM | NIM-P1 | 2.1 | 42.3 | Apr. 2010 | |
| Thailand | NIMT | NIMT-1 | -11.4 | 52.3 | Apr. 2010 | |
| Singapore | A*STAR | 156 | -4.2 | 25.7 | Apr. 2010 | |
| Malaysia | NML-SIRIM | NML-SIRIM-1 | -16.5 | 52.0 | Apr. 2010 | |
| Hong Kong, China | SCL | LTRP-0051-BW | -1.8 | 54.8 | Apr. 2010 | |
| Japan | NMIJ | NMIJ-O6 | 10.6 | 47.8 | Apr. 2010 | |
| Slovakia | SMU | SMU-1 | -2.6 | 43.4 | Jun. 2010 | |
| Switzerland | METAS | EAM-2 | 2.7 | 51.3 | Jul. 2010 | |
| Hungary | BFKH | MKEH-1 | -2.2 | 51.4 | Aug. 2010 | |
| Egypt | NIS | NIS-134 | 5.9 | 51.2 | Mar. 2011 | |
| Serbia | DMDM | DMDM-1 | 22.4 | 51.4 | Jun. 2011 |
| continued… | ||||||
| Country | Labi | Standard | xi × 1012 | Ui ×1012 | Date of measurement | |
| Spain | CEM | CEM2 | -5.3 | 50.8 | Oct. 2011 | |
| Kazakhstan | KazStandard | KazInMetr | 4.9 | 51.0 | Nov. 2011 | |
| Norway | JV | JV Sno 121 | 2.1 | 50.0 | Mar. 2012 | |
| Sweden | RISE | SP2 | -44.1 | 79.4 | May. 2012 | |
| United States | NIST | WEO155/NIST | -0.6 | 7.4 | Aug. 2012 | |
| South Africa | NMISA | WEO 200 SN1008 | 24.3 | 63.3 | Dec. 2012 | |
| United Kingdom | NPL | NPL-R18 | -7.4 | 55.1 | Jan. 2013 | |
| Belgium | SMD | LAS633.002 | -1.4 | 52.4 | Jan. 2013 | |
| Türkiye | UME | UME-L3 | -3.6 | 15.3 | Oct. 2013 | |
| Bulgaria | BIM | WEO M200 1013 | -23.2 | 71.8 | Jun. 2014 | |
| India | NPLI | CSIR-NPLI-I(1) | 1.9 | 64.1 | Jul. 2014 | |
| Indonesia | SNSU-BSN | KIM-1 | -20.3 | 63.4 | Jul. 2014 | |
| Saudi Arabia | SASO-NMCC | SASO-NMCC-1 | -0.3 | 51.3 | Nov. 2014 | |
| Netherlands | VSL | NMi-5 | 2.1 | 8.1 | Jun. 2015 | |
| Poland | GUM | GUM1 | 19.0 | 51.0 | Dec. 2015 | |
| Romania | INM | INM PMT/HE/97 | 19.0 | 51.0 | Aug. 2016 | |
| Portugal | IPQ | IPQ3 | 19.0 | 51.0 | Dec. 2016 | |
| Türkiye | UME | UME-L3 | 19.0 | 51.0 | Dec. 2017 | |
| Slovenia | MIRS | MIRS1 | -9.8 | 52.1 | Nov. 2018 | |
| South Africa | NMISA | NMISA-MUFASA | 11.6 | 43.1 | Nov. 2018 | |
| Greece | EIM | EIM-1 | -8.0 | 43.9 | Jan. 2019 | |
| Hungary | BFKH | BFKH-1 | 0.3 | 52.8 | Feb. 2020 | |
| Serbia | DMDM | DMDM-1 | 3.1 | 50.7 | Aug. 2021 |
| continued… | ||||||
| Country | Labi | Standard | xi × 1012 | Ui ×1012 | Date of measurement | |
| Switzerland | METAS | EAM-2 | 0.6 | 51.2 | Aug. 2021 | |
| Czech Republic | CMI | CMI-RWS03/2014 | -2.2 | 10.6 | Nov. 2021 | |
| Czech Republic | CMI (532 nm) | CMI-YAG1 | 3.8 | 4.1 | Nov. 2021 | |
| France | LNE-LCM/Cnam | INM9 | -11.1 | 51.2 | May. 2022 | |
| Slovakia | SMU | SMU-1 | -1.4 | 42.2 | Sep. 2022 | |
| Norway | JV | JV L-01 | 0.8 | 45.2 | Apr. 2023 | |
| Sweden | RISE | RISE2 | -49.6 | 50.6 | Apr. 2023 | |
| United Kingdom | NPL | NPL-R18 | -31.0 | 51.0 | Jun. 2023 | |
| Spain | CEM | CEM-2 | 1.0 | 51.2 | Sep. 2023 | |
| Italy | INRIM | IMGC4 | 15.1 | 31.8 | Sep. 2023 | |
| Denmark | DFM (1542 nm) | DFM2846 | -11.6 | 61.0 | Oct. 2023 |
