Table 2
Data used in this study from comparisons involving the Neon triple point, T90tp = 25.5661 K. Basic data.
| # | Data from comparisona | Sample fabricated (owned by) | Year (S = sealed) | Cell #b | Gas (assay #) c | Purity, nom. (measured) | Set #1, CCT-K2.x comparison resultsd, Set#2 | |||
|---|---|---|---|---|---|---|---|---|---|---|
| ΔToriginal/mK | U/mK | ΔToriginal/mK | U/mK | |||||||
| 1 | K2, Star | BNM-INM | 1985 (S) | BCMH2O | AL | 4N | −0.02 | 1.08 | −1.88 | 2.8 |
| 2 | K2, Int84, Star | CNR-IMGC | 1979 (S) | 3Ne | M-b (#2) | 4N5 (>4N5) | 0.11 | 0.28 | 0.11 | 0.28 |
| 3 | K2 | KRISS | <1997 | Openg | M | 4N4 | 0.01 | 0.4 | −0.15 | 0.4 |
| 4 | K2 | NIST | 1979 | Open | M (#8) | >5N5 | –0.13 | 0.32 | 0.04 | 0.32 |
| 5 | K2, Star, INRIM | NPL | 1993 (S) | Ne2 | AP (#18) | >5N | –0.10 | 0.44 | −0.19 | 0.38 |
| 6 | K2, K2.1 | NRC | 1985 (S) | F15 | AP (#17) | 5N | –0.06 | 0.44 | −0.12 | 0.44 |
| 7 | K2, Star, INRIM | PTB | 1995 (S) | Ne-7 | L (#10) | 5N | – | – | 0.26 | 0.4 |
| 8 | K2.1 | VNIIFTRI | – | Open | – | – | 0.28 | 0.67 | 0.22 | 0.67 |
| 9 | K2.3, Star | INRIM (VSL) | 1999 (S) | 12Ne | MG (#11) | 5N | −0.645 | 0.66 | −0.71 | 0.66 |
| 10 | K2.4, Star | INM | 2002 (S) | Ne02/1 | AL (#14) | 5N (4N2) | −0.625 | 0.78 | −0.685 | 0.78 |
| 11 | K2.4 | INRIM (INTiBS) | 2000 (S) | E3Ne | MG (#11) | 5N | −0.245 | 0.64 | −0.305 | 0.64 |
| 12 | K2.3, K2.4, K2.5 | NRC | 2004 (S) | Cu-M-1 | P (#9) | 5N | −0.225 | 0.20 | −0.285 | 0.20 |
| 13 | K2.3, K2.4, K2.5, Star | NRC | 1985 (S) | F17 | AP (#17) | 5N | −0.133 | 0.20 | −0.173 | 0.20 |
| 14 | K2.5, INRIM | NMIJ-AIST | 2006 (S) | Ne-5 | AW (#7) | 5N (4N2) | −0.54f | 0.60 | −0.60f | 0.61 |
| 15 | K2.5, (K2.2), INRIM | INRIM | 2002 (S) | Ec2Ne | MG (#11) | 5N | −0.69 | 0.68 | −0.75 | 0.68 |
| 16 | (K2.2), Star | INRIM (NIM) | 2000 (S) | E2Ne | MG (#11) | 5N | K2.2 not yet completed | |||
| 17 | Int84, Star, INRIM | CNR-IMGC | 1977 (S) | 1Ne | M-a (#3) | 4N5 | ||||
| 18 | Star | INRIM (PTB) | 1999 (S) | E1Ne | MG (#11) | 5N | ||||
| 19 | Star | INRIM (DSIR) | 1986 (S) | 11Ne | S (#13) | 4N | ||||
| 20 | Star | INRIM (INTiBS) | 2002 (S) | 7Ne | S (#13) | 4N | ||||
| 21 | INRIM | NMIJ | 2005 (S) | Ne-2 | IB (#5) | 5N | ||||
| 22 | INRIM | INRIM | 1999 (S) | 15Ne | MG (#11) | 5N | ||||
| 23 | INRIM | INRIM | 2000 (S) | E4Ne | MG (#11) | 5N | ||||
| 24 | INRIM | INRIM | 2001 (S) | Ec1Ne | MG (#11) | 5N | ||||
| 25 | Int84, Star | VNIIFTRI | 1997 (S) | MC-897 | own | 5N | ||||
| 26 | Int84 | NRC | 1979 (S) | Cell 12 | M | 4N5 | ||||
| 27 | Int84 | INM | 1982 (S) | BCM4 | AL | 4N | ||||
| 28 | Int84 | NRLM | 1978 (S) | 1Ne | J | 4N | ||||
| 29 | Int84 | NRLM | 1978 (S) | 2Ne | J | 4N | ||||
K2 = CCT-K2 (NRC Pilot, 1997–99) [19]; K2.1–K2.5 = bi- and tri-lateral CCT-K2.x (NRC Pilot, 2003–2015) [24–26]; Star = Comparison (PTB Co-ordinator, 2007–2012) [12]; Int84 = International Intercomparison (IMGC-CNR Pilot, 1978–84) [34]; INRIM = Comparison at INRIM (INRIM Co-ordinator, 2008–2009) [37,38].
Assays reported in [15].
Original differences with respect to the KCRV from [19]. Set#: indicates thermometers set.
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