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Fixed Temperature Points

Temperature points used as reference

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Temperature defining points of the International Practical Temperature Scale of 1990 (ITS90):

SubstanceTemperature
(K)
Triple point of hydrogen 13.8033
Triple point of neon 24.5561
Triple point of oxygen 54.3584
Triple point of argon 83.8058
Triple point of mercury 234.3156
Triple point of water 273.16
Melting point of gallium 302.9146
Freezing point of indium 429.7485
Freezing point of tin 505.078
Freezing point of zinc 692.677
Freezing point of aluminum 933.573
Freezing point of silver 1234.93
Freezing point of gold 1337.33
Freezing point of copper 1357.77
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