QSA Global - Cobalt 60 Sources QSA Global| 16798 QSA Global - Cobalt 60 Sources Print QSA Global| 16798 QSA Global - Cobalt 60 Sources The Cobalt-60 sources are made of cobalt disks or pellets of uniform size in a welded stainless steel capsule. The Co-60 is designated for use within the steel thickness range of 2.0" to 6.0" (50mm to 150mm) per ISO 5579. [table id=SourceCo60_EN /] RAC60-###: Standard Co-60 Source. Activity to be determined (10 to 300Ci). RAC60-02: Standard Co-60 Source, 200Ci. RAC60-015: Standard Co-60 Source, 150Ci. RAC60-01: Standard Co-60 Source, 100Ci. RAC60-006: Standard Co-60 Source, 60Ci. RAC60-005: Standard Co-60 Source, 50Ci. RAC60-003: Standard Co-60 Source, 30Ci. Request for information