CCQM-K165
MEASURAND Dimethyl sulfide in nitrogen
NOMINAL VALUE 5 nmol/mol
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in nmol/mol.
CCQM-K165
MEASURAND Dimethyl sulfide in nitrogen
NOMINAL VALUE 5 nmol/mol
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in nmol/mol.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
nmol/mol |
nmol/mol |
nmol/mol |
||
| KRISS | -0.01 | 0.11 | ||
| NIM | 0.01 | 0.17 | ||
| NPL | 0.17 | 0.16 | ||
| VNIIM | 0.02 | 0.25 |
| Metrology area, Sub-field | Chemistry and Biology, Gases |
| Description | Dimethyl sulfide in nitrogen |
| Time of measurements | 2020 - 2021 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Amount-of-substance fraction of dimethyl sulfide in nitrogen Nominal value: 5 nmol/mol |
| Transfer device | High pressure aluminum cylinders |
| Comparison type | Key Comparison |
| Consultative Committee | CCQM (Consultative Committee for Amount of Substance) |
| Conducted by | CCQM (Consultative Committee for Amount of Substance) |
| Pilot institute |
KRISS
Korea Research Institute of Standards and Science Korea, Republic of |
| Contact person | Sangil Lee +82 42 868 5864 |
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CCQM-K165
MEASURAND Dimethyl sulfide in nitrogen
NOMINAL VALUE 5 nmol/mol
The key comparison reference value xR and its associated standard uncertainty uR, obtained from gravimetric measurements, were provided for each participant by the pilot laboratory KRISS
| Labi | xR,i | u(xRi) | |
| nmol/mol | nmol/mol | ||
| KRISS | 5.089 | 0.036 | |
| NIM | 5.114 | 0.039 | |
| NPL | 5.126 | 0.037 | |
| VNIIM | 5.119 | 0.037 | |
The degree of equivalence of laboratory i relative to the key comparison reference value xR is given by a pair of terms, both expressed in nmol/mol:
Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence where Ui = 2 ui.
CCQM-K165
MEASURAND Dimethyl sulfide in nitrogen
NOMINAL VALUE 5 nmol/mol
xi,ref key comparison reference value applied to laboratory i, Labi
u combined standard uncertainty
xi measured mole fraction reported by laboratory i, Labi
| Labi | xi,ref | u(xi,ref) | xi | u(xi) | |
| nmol/mol | nmol/mol | nmol/mol | nmol/mol | ||
| KRISS | 5.089 | 0.036 | 5.078 | 0.033 | |
| NIM | 5.114 | 0.039 | 5.121 | 0.077 | |
| NPL | 5.126 | 0.037 | 5.30 | 0.07 | |
| VNIIM | 5.119 | 0.037 | 5.10 | 0.12 | |
