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CCQM-K52
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CCQM-K52
Information
Metrology area, branch   Amount of Substance, Gases
Description   Carbon dioxide (CO2) in Air
Time of measurement   2006
Status   Approved for equivalence, Results available
Reference(s)   Metrologia, 2008, 45, Tech. Suppl., 08011
Measurand   Amount-of-substance fraction: 360 µmol/mol
Transfer device(s)   Calibrated gas cylinders measured by gravimetry
Comparison type   Key comparison
Consultative Committee  CCQM (Consultative Committee for Amount of Substance)
Conducted by   CCQM (Consultative Committee for Amount of Substance)
Comments  

Since August 2008, the results of CCQM-K52 (nominal value: 360 µmol/mol) have superseded those of CCQM-K1.b at 100 µmol/mol.