Bilateral Intercomparison of the ITS‐90 Realisations in the Range from −189.3442 °C (Triple Point of Argon) to 961.78 °C (Freezing Point of Silver) between the MIRS/FE‐LMK (Slovenia) and the PTB (Germany)

The paper describes the results of a bilateral intercomparison of the ITS‐90, as realized and maintained at MIRS/FE‐LMK and PTB, respectively, in the range between the triple point of argon (−189.3442 °C) and the freezing point of silver (961.78 °C). Both laboratories base their scale on fixed points and long stem standard platinum resistance thermometers as interpolating instruments in this range, as prescribed by the ITS‐90. The results of the intercomparison show that a transition from a secondary temperature laboratory to a primary temperature laboratory was successfully reached by MIRS/FE‐LMK.