scope:

Similar desiderata apply to any source issued as a standard but considerable variability exists in the amount and kind of data provided by the suppliers of standardized sources. Thus, agreement as to the contents required in any certificate, specifying a standard source is highly desirable. Report 12 is intended to meet this need. The report treats the problems of certification of standardized radioactive sources, clarifies the pertinent terms previously defined by the ICRU and gives a comprehensive list of the information which should be provided with a standardized source. The report is intended primarily as a guide for suppliers of standardized sources, but should also be helpful to users of such sources.