| Metrology area, Sub-field | Chemistry and Biology, Gases |
| Description | Methane in air |
| Time of measurements | 2023 - 2024 |
| Status | Protocol complete |
| Measurand | Amount fraction of methane in air, with measurement results being expressed in mol/mol (or one of its multiples mmol/mol, μmol/mol or nmol/mol). 1800 nmol/mol to 2200 nmol/mol |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | BIPM (Bureau International des Poids et Mesures) |
| Comments | The CCQM-K82.2023 comparison is designed to evaluate the level of compatibility of methane in air primary reference mixtures in the range (1800-2200) nmol/mol. The balance gas for the standards shall be either scrubbed dry real air or synthetic air. The comparison can also serve to demonstrate the purity analysis capabilities for NMIs for measurements of trace levels of methane in a variety of matrix gases. |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | E. Flores +33 1 45 07 70 92 |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LNE |
Laboratoire national de métrologie et d'essais, France, EURAMET |
| NIM |
National Institute of Metrology, China, APMP |
| NIMT |
National Institute of Metrology (Thailand), Thailand, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| NOAA/ESRL |
NOAA Earth System Research Laboratory (NOAA/ESRL), WMO - International Organization, SIM |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| NPLI |
CSIR National Physical Laboratory of India, India, APMP |
| UME |
TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET |
| VSL |
VSL, Netherlands, EURAMET |
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