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The NIST Low Temperature Calibration Facility (LTCF) can accommodate most capsule and miniature type resistance thermometers suitable for use in vacuum within the range 0.65 K to 83.8 K, with special tests possible as high as 165 K. Calibrations of cryogenic resistance thermometers at NIST are performed by comparison to standard thermometers on the International Temperature Scale of 1990 (ITS-90) for the following thermometers:
Additional special tests are available for non-standard cryogenic thermometers.
The Standard Platinum Resistance Thermometer Calibration Laboratory (SPRTL) calibrates thermometers from 84 K to 1235 K (Ar TP to Ag FP). Information for these calibrations are found on the ITS-90 Defining Artifacts webpage.
How to Arrange a Calibration
For contact information, shipping address, or cost of calibration, see Resistance Thermometry.
Calibration Measurement Uncertainties
ITS-90 Defining Fixed-Points for Capsule SPRTs
ITS-90 Subrange for Capsule SPRTs
† The ITS-90 temperature subrange uncertainties include the propagated fixed-point uncertainties and the contribution from non-uniqueness types I and III.
Rhodium-Iron Resistance Thermometers
100 Bureau Drive, M/S 8363