The Co-60 disk sources is supplied as a one inch plastic discs. The half-life is 5.27 years. The small quantity of radioactive material is sealed in radioactive isotope check source the plastic with epoxy to prevent leakage and contamination. The transmission window is sufficiently thin to transmit both beta and gamma emissions without undue absorption.

These items are uncalibrated and of nominal activity to provide a safe, yet inexpensive supply of radioactive material for educational and commercial use. Optional Secondary calibration (+/- 5%) are available for gamma source. Co-the 60 is available in these activities:

0.1 microCuries
0.5 microCuries
1 microCuries