 Provisional Low Temperature Scale of 2000

The Provisional Low Temperature Scale of 2000 (PLTS-2000) is a temperature scale developed for use in cryogenics, particularly for temperatures below 1 Kelvin. It was established to provide a consistent and accurate reference for measurements in the low-temperature regime, where traditional temperature scales (like Celsius or Kelvin) may not adequately meet the needs of precision experiments or applications.