– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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"Metrology for Clean Air" project

This project is designed to allow NMIs to strengthen their gas standard capabilities and further develop their national metrology infrastructure in support of their air quality and emissions measurement communities; providing knowledge transfer to scientists developing capabilities in this area, including periods as visiting scientists at the BIPM.


  • Status:
    • The project started following the Workshop on Quality Infrastructure for traceable measurements of greenhouse gases (GHG), organized in February 2016 under the auspices of the Regional Fund Quality Infrastructure for Biodiversity and Climate Protection in Latin America and the Caribbean. The project permits the BIPM to host visiting scientists from Participating NMIs, and provide knowledge transfer on the establishment and operation of FTIR capabilities for the value assignment and comparison of gas standards for air quality and emissions monitoring. Participating NMIs are required to cover the cost of seconding a scientist to the BIPM.

  • Dates:
    • The project started in 2016 and will run to the end of 2019. Participating NMIs will be able to second staff to the BIPM for knowledge transfer purposes during 2016-2019.

  • Application process:
    • NMIs interested in participating or supporting the programme should contact the Director of the BIPM Chemistry Department for further information. Application as a participating NMI is open to NMIs/DIs from developing economies with or establishing laboratory gas standard activities.

    BIPM CB&KT programme

This project is designed to allow NMIs to strengthen their gas standard capabilities and further develop their national metrology infrastructure in support of their air quality and emissions measurement communities; providing knowledge transfer to scientists developing capabilities in this area, including periods as visiting scientists at the BIPM.

The project permits the BIPM to provide knowledge transfer on the establishment and operation of FTIR capabilities for the value assignment and comparison of gas standards for air quality and emissions monitoring.

Visiting scientists have the opportunity to undertake a six-month knowledge transfer secondment in the BIPM's Chemistry Department. The secondment is intended to broaden the visiting scientist's skills on FTIR operation and analysis of FTIR spectra for gas analysis. The visiting scientist will be able to master and apply FTIR measurement techniques for a number of key air quality/emission gases, notably: NO/N2 over the range 30 µmol/mol to 70 µmol/mol, NO2/N2 over the range 2 µmol/mol to 15 µmol/mol, and CO2 over the range 380 µmol/mol to 480 µmol/mol.


  • Participation:
  • The knowledge transfer secondments at the BIPM are open to visiting scientists from NMIs/DIs of Member States and Associates that:

    • are developing a Gas Metrology Programme;
    • have FTIR instrumentation as part of their Gas Metrology Facilities;
    • commit to sending a visiting scientist to the BIPM for six months and have funding to cover the scientists' salary, insurance and living costs for this period

    The visiting scientist should

    • have practical experience in gas analysis and standards;
    • have a working knowledge of English (instruction and documentation will be provided in English).

    NMIs/DIs wishing to participate in the project should contact the BIPM for further information.


  • Financial Support:
  • The BIPM would like to thank the following institutes for providing financial support to permit visiting scientists from Countries and Economies with Emerging Metrology Systems to participate in the project:

    • PTB, Germany (support for 6 months' secondment of visiting scientist from CENAM, Mexico, 2016)

    • NPL, UK (support for 6 months' secondment of visiting scientists from: NPLI, India (2017); NMISA, South Africa (2018); Opportunity for 2018-2019)

    NMIs/DIs interested in providing financial support the project should contact the BIPM for further information.

Visiting scientists have the opportunity to undertake a six-month knowledge transfer secondment as part of the BIPM Metrology for Clean Air CBKT project. The secondment is intended to broaden the visiting scientist's skills on FTIR operation and analysis of FTIR spectra for gas analysis. The visiting scientist will be able to master and apply FTIR measurement techniques for a number of key air quality gases, notably: NO/N2 over the range 30 µmol/mol to 70 µmol/mol, NO2/N2 over the range 2 µmol/mol to 15 µmol/mol, and CO2 over the range 380 µmol/mol to 480 µmol/mol.


  • Activity list:
  • The visiting scientist will undertake training on advanced FTIR operation, including:

    • Operation of Nicolet Nexus and Bruker V70 FTIRs and Omnic and Opus operating software;
    • Gas cell path length alignment and measurement
    • Operation of MALT software both for manual processing and automated processing of spectra using both synthetic calibration and gas standard calibration
    • Uncertainty analysis of FTIR measurements
    • Training on the operation of BIPM’s B-FOS automated spectral analysis software and system requirements for its installation on other FTIRs
    • Training on the operation of magnetic suspension permeation systems for generation of NO2 and HNO3 dynamic standards
    • Analysis of gravimetric standards of NO2/N2 with FTIR to assign mole fraction values and uncertainties to NO2, HNO3 mole fractions and other impurities detected
    • Analysis of gravimetric standards of CO2 with FTIR to assign mole fraction values
    • Analysis of gravimetric standards of NO with FTIR to assign mole fraction values

    The visiting scientist will be required to write a report and give a presentation summarizing experimental results, development activities, and the recommended calibration methods with the associated uncertainty budgets.


  • Acquired Skills
  • At the end of the secondment period, the visiting scientist is expected to have acquired for the following skills:

    • Ability to autonomously use of FTIR including B-FOS for accurate gas concentration measurement for either impurity or main component measurement
    • Ability to autonomously use of FTIR and B-FOS for accurate NO, NO2 and CO2 mole fraction measurements in accordance with ISO 6143
    • Ability to align and accurately measure gas cell path lengths
    • Ability to derive and validate a complete uncertainty budget for FTIR analysis
    • Ability to autonomously use a permeation system for dynamic gas standard generation