Resolution 1 of the 18th CGPM
Third verification of the national prototypes of the kilogram
The 18th Conférence Générale des Poids et Mesures
recalling and confirming
having asked the advice of the Comité International des Poids et Mesures and having approved its decision to proceed with a comparison of the international Prototype of the kilogram with its designated copies ("témoins") and with the working-standard prototypes of the Bureau International des Poids et Mesures,
considering that the Bureau International des Poids et Mesures will then be in a position to organize a general comparison of the national prototypes, a comparison which should begin in the period 1989-1990,
recommends that the laboratories concerned prepare to send to the Bureau International des Poids et Mesures their national prototypes of the kilogram in platinum-iridium for a general comparison of these prototypes.