Calibration of Temperature fixed points

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Temperature fixed points

Temperature fixed points are calibrated by comparison to reference fixed point cells using highly stable standard resistance thermometers. Calibration is confirmed by a DAkkS calibration certificate as standard.

DAkkS-permitted uncertainty: Temperature fixed points

Fixed point

Temperature

Uncertainty

Mercury

-38,8344 °C

2,5 mK

Water

0,01 °C

1,5 mK

Gallium

29,7646 °C

1,5 mK

Indium

156,5985 °C

4,0 mK

Tin

231,928 °C

5,0 mK

Zinc

419,527 °C

8,5 mK

Aluminium

660,323 °C

20,0 mK