NIST Temperature Scale Database (SRD 60), Version 3.0
Fixed Points Associated with a Selected Reference:
Reference:
H. Preston-Thomas, The International Temperature Scale of 1990 (ITS-90), Metrologia 27 (1990) 3 (DOI:) (1990)Instruction:
Substance | Transition | T90 (K)
| u(T90) (mK) | T-T90 (mK) | u(T-T90) (mK) | u(T90) (K)
| Eval |
|---|---|---|---|---|---|---|---|
| Ag | FP | 1234.93 | 4 | 46.2 | 14 | 4 | |
| Al | FP | 933.473 | 2 | 28.7 | 6.6 | 2 | |
| Ar | TP | 83.8058 | 0.06 | -4.21 | 0.15 | 0.06 | |
| Au | FP | 1337.33 | 25 | 39.9 | 20 | 25 | |
| Cu | FP | 1357.77 | 25 | 52.1 | 20 | 25 | |
| e-H2 | VP1 | 17.035 | 0.15 | 0.29 | 0.01 | 0.15 | |
| e-H2 | VP2 | 20.27 | 0.15 | 0.16 | 0.01 | 0.15 | |
| Ga | MP | 302.9146 | 0.2 | 3.84 | 0.34 | 0.2 | |
| H2 | TP | 13.8033 | 0.15 | 0.36 | 0.01 | 0.15 | |
| He | VP | 0.65 to 5.0 | <1 | |T-T90|<2 | <1 | <1 | |
| Hg | TP | 234.3156 | 0.2 | -2.89 | 0.13 | 0.2 | |
| In | FP | 429.7485 | 0.8 | 10.1 | 0.8 | 0.8 | |
| Ne | TP | 24.5561 | 0.09 | -0.06 | 0.2 | 0.09 | |
| O2 | TP | 54.3584 | 0.06 | -2.21 | 0.14 | 0.06 | |
| Review | RE | ||||||
| Sn | FP | 505.078 | 0.6 | 11.5 | 1.3 | 0.6 | |
| H2O | TP | 273.16 | 0 | 0.1 | 0.1 | 0 | |
| Zn | FP | 692.677 | 0.8 | 13.8 | 6.9 | 0.8 |