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Coordinating the world-wide measurement system to ensure comparable and internationally accepted measurement results

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About us
About us
Benefits of participation
Benefits of participation
Governance
Governance
Our Mission and Objectives
Our Mission and Objectives
Historical information
Historical information
Coordination
Coordination
CIPM MRA
CIPM MRA
CIPM Consultative Committees
CIPM Consultative Committees
- Page CIPM Consultative Committees
- CCAUV
- CCEM
- CCL
- CCM
- CCPR
- CCQM
- CCRI
- CCT
- CCTF
- CCU
Guides in Metrology Committee: JCGM
Guides in Metrology Committee: JCGM
International reference time scales
International reference time scales
Laboratory medicine: JCTLM
Laboratory medicine: JCTLM
Liaison
Liaison
Institutional liaisons
Institutional liaisons
CODATA-TGFC
Joint Committees
Joint Committees
NMI Directors and Member State Representatives
Regional metrology organizations
Regional metrology organizations
Technical/Scientific
Technical/Scientific
The SI
The SI
Technical areas of the BIPM
Technical areas of the BIPM
Publications & Events
Publications & Events
Publications
Publications
Metrology resources
Metrology resources
Events
Events

Metrology areas
AUV: Acoustics, Ultrasound and Vibrations

Committee structure: CCAUV

BIPM contact: Dr Gianna Panfilo

EM : Electricity and Magnetism

Metrologia: Focus on Metrology in Electricity and Magnetism

Committee structure: CCEM

BIPM contact: Dr Michael Stock

L: Length

Committee structure: CCL

BIPM contact: Dr Gianna Panfilo

M: Mass and related quantities

Committee structure: CCM

BIPM contact: Dr Hao Fang

PR: Photometry and Radiometry

QM: Chemistry and Biology

BIPM contact

RI: Ionizing radiation

T: Thermometry

TF: Time and Frequency

Committee structure: CCTF

BIPM Time Department Database

Time FTP Server

BIPM contact: Dr Patrizia Tavella

U: The SI (International System of Units)

Committee structure: CCU

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Metrology areas
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Metrology areas

AUV: Acoustics, Ultrasound and Vibrations
- Committee structure: CCAUV
- BIPM contact: Dr Gianna Panfilo
EM : Electricity and Magnetism
L: Length
- Committee structure: CCL
- BIPM contact: Dr Gianna Panfilo
M: Mass and related quantities
- Committee structure: CCM
- BIPM contact: Dr Hao Fang
PR: Photometry and Radiometry
QM: Chemistry and Biology
- BIPM contact
RI: Ionizing radiation
T: Thermometry
TF: Time and Frequency
U: The SI (International System of Units)
- Committee structure: CCU

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Metrology areas
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The 2018 revision of the SI
World Metrology Day
International Vocabulary of Metrology (VIM)
Metrologia
Guide to the Expression of Uncertainty in Measurement
Autres publications
- Resolutions of the CGPM
- Time FTP Server
Capacity Broadening & Knowledge Transfer (CBKT)
NMI Directors and Member State Representatives
- BIPM strategy document
- Toolbox: Benefits and how to participate
Joint Committee of the RMOs and the BIPM (JCRB)
tests
- Test URL
KCDB

CCTF meetings

List of meetings

Meetings of the CCTF

Entity

CCTF

CCL-CCTF-WGFS

CCTF-ATFT-WS

CCTF-WG-ALGO

CCTF-WGATFT

CCTF-WGGNSS

CCTF-WGMRA

CCTF-WGPSFS

CCTF-WGSP

CCTF-WGTAI

CCTF-WGTWSTFT

Year

Upcoming Meeting

CCTF-WGTAI

15
June
2023

Patrizia Tavella
CCTF-WGTAI

Upcoming Meeting

CCTF-WGSP

21
April
2023

Patrizia Tavella
CCTF-WGSP

Upcoming Meeting

CCTF-WGTAI

18
April
2023

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCTF-WGSP

03
February
2023

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGTAI

20
September
2022

Patrizia Tavella
CCTF-WGTAI

Past Meeting

23rd meeting of the CCTF (online)

From 29 June
to 01 July
2022

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGATFT

24
June
2022

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGSP

17
June
2022

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGSP

23, 25 May
2022

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGTWSTFT

20, 27 May
2022

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGGNSS

18
May
2022

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WG-ALGO

17
May
2022

Giulio Tagliaferro
CCTF-WG-ALGO

Past Meeting

CCTF-WGSP

18
March
2022

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGSP

21
January
2022

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCL-CCTF-WGFS

27
September
2021

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGSP

17
September
2021

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGGNSS

23
June
2021

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGSP

18
June
2021

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGTAI

11
June
2021

Patrizia Tavella
CCTF-WGTAI

Past Meeting

22nd meeting of the CCTF (Session II - online)

From 11 to 12
March
2021

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGMRA

04
March
2021

Gianna Panfilo
CCTF-WGMRA

Past Meeting

CCTF-WGSP

03
March
2021

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGTWSTFT

23
February
2021

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGSP

11
February
2021

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGGNSS

03
February
2021

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGSP

20
November
2020

Patrizia Tavella
CCTF-WGSP

Past Meeting

22nd meeting of the CCTF (Session I - online)

From 28 to 29
October
2020

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGSP

24
September
2020

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGSP

From 26 to 27
August
2020

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WG-ALGO

17
July
2020

Giulio Tagliaferro
CCTF-WG-ALGO

Past Meeting

CCTF-WGSP

24
June
2020

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGGNSS

03
June
2020

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGSP

27
May
2020

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGSP

20
April
2020

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGTWSTFT

From 31 October
to 01 November
2019

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGSP

11
October
2019

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCTF-WGSP

26
June
2019

Patrizia Tavella
CCTF-WGSP

Workshop

Workshop 2018 of the CCTF-WGGNSS

28
November
2018

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCL-CCTF-WGFS

14
June
2018

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 07 to 08
June
2018

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGATFT

12
April
2018

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGGNSS

10
April
2018

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

21st meeting of the CCTF

From 08 to 09
June
2017

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGTAI

07
June
2017

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCTF-WGATFT

07
June
2017

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGPSFS

06
June
2017

Gianna Panfilo
CCTF-WGPSFS

Past Meeting

CCTF-WGGNSS

06
June
2017

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGMRA

06
June
2017

Gianna Panfilo
CCTF-WGMRA

Past Meeting

CCL-CCTF-WGFS

06
June
2017

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 18 to 19
May
2017

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCL-CCTF-WGFS

From 03 to 04
May
2017

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGMRA

17
February
2017

Gianna Panfilo
CCTF-WGMRA

Past Meeting

Task Group on Time Scale Definition

28
September
2016

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCTF-WGTWSTFT

From 07 to 08
September
2016

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGATFT

07
April
2016

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGGNSS

05
April
2016

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WG-ALGO

From 09 to 11
November
2015

Giulio Tagliaferro
CCTF-WG-ALGO

Past Meeting

20th meeting of the CCTF

From 17 to 18
September
2015

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGTAI

16
September
2015

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCTF-WGATFT

15
September
2015

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGSP

15
September
2015

Patrizia Tavella
CCTF-WGSP

Past Meeting

CCL-CCTF-WGFS

14
September
2015

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGGNSS

14
September
2015

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGMRA

14
September
2015

Gianna Panfilo
CCTF-WGMRA

Past Meeting

CCTF-WGTWSTFT

From 07 to 08
September
2015

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGPSFS

15
April
2015

Gianna Panfilo
CCTF-WGPSFS

Past Meeting

CCTF-WGGNSS

13
April
2015

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGTWSTFT

From 15 to 16
September
2014

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCL-CCTF-WGFS

26
June
2014

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGGNSS

24
June
2014

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGATFT

23
June
2014

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGGNSS

04
December
2013

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCTF-WGTWSTFT

From 05 to 06
September
2013

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGGNSS

24
July
2013

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

CCL-CCTF-WGFS

23
July
2013

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGGNSS

28
November
2012

Giulio Tagliaferro
CCTF-WGGNSS

Past Meeting

19th meeting of the CCTF

From 13 to 14
September
2012

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGTAI

12
September
2012

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCL-CCTF-WGFS

From 10 to 11
September
2012

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 06 to 07
September
2012

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGATFT

25
April
2012

Frédéric Meynadier
CCTF-WGATFT

Past Meeting

CCTF-WGTWSTFT

From 12 to 13
September
2011

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGATFT

29
June
2011

Frédéric Meynadier
CCTF-WGATFT

Workshop

BIPM Workshop on Development of Advanced Time and Frequency Techniques

From 28 to 29
June
2011

Lennart Robertsson
CCTF-ATFT-WS

Past Meeting

CCTF-WGTWSTFT

From 16 to 17
September
2010

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGTWSTFT

From 20 to 21
October
2009

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

18th meeting of the CCTF

From 04 to 05
June
2009

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGTAI

03
June
2009

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCL-CCTF-WGFS

02
June
2009

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 02 to 03
October
2008

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGTWSTFT

From 17 to 19
September
2007

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCL-CCTF-WGFS

From 10 to 11
September
2007

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

17th meeting of the CCTF

From 14 to 15
September
2006

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGTAI

From 12 to 13
September
2006

Patrizia Tavella
CCTF-WGTAI

Past Meeting

CCL-CCTF-WGFS

From 11 to 12
September
2006

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 10 to 12
September
2006

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGTWSTFT

From 15 to 16
November
2005

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCL-CCTF-WGFS

From 13 to 14
September
2005

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 14 to 15
October
2004

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

16th meeting of the CCTF

From 01 to 02
April
2004

Patrizia Tavella
CCTF

Past Meeting

CCL-CCTF-WGFS

30
March
2004

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 09 to 10
October
2003

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCL-CCTF-WGFS

From 09 to 10
September
2003

Gianna Panfilo
CCL-CCTF-WGFS

Past Meeting

CCTF-WGTWSTFT

From 07 to 09
October
2002

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

CCTF-WGTWSTFT

From 05 to 06
October
2001

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

15th meeting of the CCTF

From 20 to 21
June
2001

Patrizia Tavella
CCTF

Past Meeting

CCTF-WGTWSTFT

From 05 to 06
October
2000

Frédéric Meynadier
CCTF-WGTWSTFT

Past Meeting

14th meeting of the CCTF

From 20 to 22
April
1999

Patrizia Tavella
CCTF

Past Meeting

5th meeting of the CCTF then CCDS

From 18 to 19
June
1970

Patrizia Tavella
CCTF

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