The most recent results of BIPM.RI(II)-K4.Cu-64
have been published in the KCDB, now including results obtained by NRC (Canada)
. This is a continuous comparison of radioactivity using a transfer instrument for the International Reference System (SIR), in which 8 institutes presently have valid linked data from participation. Cu-64 has a short half-life of 12 h where the use of a transfer instrument is of particular interest. Cu-64 is notably used as a radiopharmaceutical for radiotherapy and medical diagnostics.