NIST Temperature Scale Database (SRD 60), Version 3.0
Fixed Points Associated with a Selected Reference:
Reference:
Lemmon, E.W., Bell, I.H., Huber, M.L., McLinden, M.O. NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 10.0, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2018. (No DOI) (2018)Instruction:
Substance | Transition | T90 (K)
| u(T90) (mK) | T-T90 (mK) | u(T-T90) (mK) | u(T90) (K)
| Eval |
|---|---|---|---|---|---|---|---|
| Acetylene | BP | 188.26 | na | na | |||
| Acetylene | TP | 191.75 | na | na | |||
| Ar | BP | 87.302 | 0.002 | 0.002 | |||
| Chlorotrifluoromethane | BP | 191.674 | 0.009 | 0.009 | |||
| Chlorotrifluoromethane | TP | 92 | na | na | |||
| e-D2 | BP | 23.661 | 0.035 | 0.035 | |||
| Ethane | BP | 184.5686 | 0.0009 | 0.0009 | |||
| Ethane | TP | 90.368 | na | na | |||
| He | BP | 4.2238 | 0.0001 | 0.0001 | |||
| He | TP | 2.1768 | na | na | |||
| Methane | BP | 111.667 | na | na | |||
| Methane | TP | 90.6941 | na | na | |||
| n-D2 | TP | 18.724 | na | na | |||
| n-H2 | BP | 20.369 | na | na | |||
| n-H2 | TP | 13.957 | na | na | |||
| N2 | BP | 77.3550 | 0.0008 | 0.0008 | |||
| Ne | BP | 27.100 | 0.003 | 0.003 | |||
| Ne | BP | 27.100 | 0.003 | 0.003 | |||
| o-H2 | b-g | 20.38 | na | na | |||
| o-H2 | TP | 14.008 | na | na | |||
| O2 | BP | 90.1878 | 0.005 | 0.005 | |||
| p-H2 | BP | 20.271 | na | na | |||
| p-H2 | TP | 13.8033 | na | na | |||
| Propane | BP | 231.036 | 0.002 | 0.002 | |||
| Propane | TP | 85.525 | na | na |