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CCQM-K1.b
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CCQM-K1.b
Information
Metrology area, branch   Amount of Substance, Gases
Description   Carbon dioxide (CO2) in Nitrogen (N2)
Time of measurement   1993 - 1994
Status   Approved for equivalence, Results available
Reference(s)   Metrologia, 2000, 37, 35-49
Measurand   Amount-of-substance fraction of CO2 in N2: 100 µmol/mol, 1000 µmol/mol and 150 mmol/mol
Transfer device(s)   Calibrated gas cylinder 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  

CCQM-K1.b is one of the seven sub-comparisons CCQM-K1.a, .b, .c, .d, .e, .f, and .g of the key comparison CCQM-K1 on gas mixtures.

Since August 2008, the results of CCQM-K1.b at 100 µmol/mol have been superseded by those of CCQM-K52 (nominal value: 360 µmol/mol).