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Uncertainties associated with the comparison results
| Relative standard uncertainty | uiA | uiB |
|---|---|---|
| NK,NIST/NK,BIPM | 0.0026 | 0.0025a |
| Ion recombination in transfer chambers | - | 0.0005 |
| Field size/distance | - | 0.0005 |
| kQ | - | 0.0004 |
| Transfer chambers str,comp | - | 0.0009 |
| RK,NIST | uc = 0.0038 | |
Takes account of correlation in type B uncertainties as noted in Section 9.
