TI Services offers three different designs of Dose calibrator sources.  The “old E-vial”, originally designed to mimic the elution vial for Tc-99m generators when everyone had their own generator, the syringe vial, designed to mimic a 5cc syringe or 10 cc multidose vial, and the multi-dose vials, designed to mimic a 5cc, 10cc , or 20cc multidose vial with a crimp seal.   All designs are registered sealed sources and are offered in the standard activity levels and radionuclides (Co-57, Ba-133, Cs-137, Co-60 and Ge-68 (F-18 equivalent value given)).