Last weeks (20 October) meeting of the International Committee for Weights and Measures (CIPM) resulted in a resolution recommending the redefinition of four base units of the International System of Units (SI): the kilogram, the ampere, the kelvin and the mole.
These recommendations will then go before the General Conference on Weights and Measures (CGPM), which oversees the SI, for final worldwide agreement in November 2018. If the submission passes the vote, the four units will be based on exact values of four fundamental constants. The changes would take effect on World Metrology Day, 20 May 2019.
Source: News – EURAMET
