NIST Standard Reference Database (SRD) 60

NIST Temperature Scale Database (SRD 60), Version 3.0

Fixed Points Associated with a Selected Reference:

Reference:

Bedford, RE; Bonnier, G; Maas, H; Pavese, F, Recommended values of temperature on the International Temperature Scale of 1990 for a selected set of secondary reference points, Metrologia, 33 (1996) 133-154. (DOI:) (1996)

Instruction:

Total Records: 81

Substance	Transition	T₉₀ (K)	u(T₉₀) (mK)	T-T₉₀ (mK)	u(T-T₉₀) (mK)	u(T₉₀) (K)	Eval
AgAl - 30%	eut	840.957	0.002			0.002
Al	SC	1.181	0.003			0.003
Al₂O₃	MP	2326	2			2
Ar	BP	87.3032	0.0003			0.0003
Benzoic Acid	FP	395.502	0.007			0.007
Benzoic Acid	TP	395.486	0.002			0.002
Bi	FP	544.5522	0.0003			0.0003
Bromobenzene	TP	242.424	0.04			0.04
Cd	FP	594.2186	0.0002			0.0002
Chlorotrifluoromethane	BP	191.784	0.025			0.025
Chlorotrifluoromethane	TP	86.746	na			na
Co	FP	1768	3			3
CO₂	SP	194.686	0.003			0.003
CO₂	TP	216.5924	0.0005			0.0005
CuAg - 71.9%	EP	1052.78	0.05			0.05
CuAl - 66.9%	eut	821.308	0.010			0.010
Diphenylether	TP	300.014	0.001			0.001
e-D₂	BP	23.636	0.009			0.009
e-D₂	TP	18.6889	0.0003			0.0003
Ethane	TP	90.36	0.06			0.06
Ethylene Carbonate	TP	309.465	0.001			0.001
Fe	FP	1811	3			3
Ga	TP	302.9166	0.0001			0.0001
GaIn - 20.5%	eut	288.800	0.001			0.001
GaSn - 8%	eut	293.626	0.002			0.002
He	BP	4.2238	0.0032			0.0032
⁴He	SF	2.1768	0.0001			0.0001
HfO₂	MP	3076	6			6
Hg	BP	629.811	0.004			0.004
Hg	FP	234.3210	0.0005			0.0005
Icosane	TP	309.63	0.01			0.01
In	SC	3.4145	0.0025			0.0025
In	TP	429.7436	0.0002			0.0002
Ir	FP	2719	6			6
Kr	BP	119.735	0.013			0.013
Kr	TP	115.775	0.001			0.001
Li₂O	MP	1711	5			5
Methane	a-b	20.48	0.02			0.02
Methane	BP	111.668	0.005			0.005
Methane	TP	90.6943	0.0003			0.0003
Mo	MP	2895	4			4
n-D₂	TP	18.7236	0.0003			0.0003
n-H₂	BP	20.388	0.002			0.002
n-H₂	TP	13.952	0.002			0.002
N₂	a-b	35.614	0.006			0.006
N₂	BP	77.352	0.002			0.002
N₂	TP	63.1507	0.0001			0.0001
Na	BP	1156.09	0.05			0.05
Na	FP	370.944	0.005			0.005
NaCl	FP	1075.168	0.011			0.011
Nb	MP	2745	7			7
Nb	SC	9.288	0.003			0.003
Ne	BP	27.097	0.001			0.001
Ne-20	TP	24.5406	0.0006			0.0006
Ni	FP	1728	1			1
O₂	a-b	23.868	0.005			0.005
O₂	b-g	43.796	0.001			0.001
O₂	CP	90.197	0.001			0.001
Pb	FP	600.612	0.001			0.001
Pb	SC	7.1997	0.0025			0.0025
Pd	FP	1828.0	0.1			0.1
Propane	TP	85.52	0.01			0.01
Pt	FP	2041.3	0.4			0.4
Rb	TP	312.453	0.002			0.002
Review	RE
Rh	FP	2236	3			3
Ru	MP	2606	10			10
S	BP	717.674	0.002			0.002
Sb	FP	903.778	0.001			0.001
SF₆	TP	223.554	0.005			0.005
Succinonitrile	TP	331.215	0.002			0.002
Ta	MP	3280	na			na
Ti	MP	1943	2			2
Trichlorofluoromethane	TP
H₂O	BP	373.124	0.001			0.001
H₂O	IP	273.15	<0.0001			<0.0001
Xe	BP	165.05	0.02			0.02
Xe	TP	161.405	0.001			0.001
Y₂O₃	MP	2707	5			5
Zn	SC	0.8500	0.0030			0.0030
Zr	MP	2127	8			8