International Committee for Weights and Measures
The International Committee for Weights and Measures specified in 2005 that the definition of the kelvin temperature scale would refer to water with a composition of the nominal specification of VSMOW. The decision was welcomed in 2007 by Resolution 10 of the 23rd CGPM. This effectively defined the triple point of VSMOW to be exactly 273.16 K and 0.01 °C.