Resolution 1 of the 3rd CGPM
Declaration concerning the definition of the litre
The Conference declares
- The unit of volume, for high accuracy determinations, is the volume occupied by a mass of
1 kilogramof pure water, at its maximum density and at standard atmospheric pressure: this volume is called "litre".
- . . .
This definition was abrogated in 1964 by the 12th CGPM (Resolution 6).