Radioactive Source (Cs-137) - SN-9795



This radioactive source is mounted in a 2.5 cm diameter sealed plastic disk.

The source is USNRC License Exempt (US only).  Outside the US, consult local laws and regulations.

Below is the isotope, activity, half-life and type of radiation:

  • Cs-137, 5 µCi, 30.2 years, beta and gamma


Radioactive Activity
  • 5µCi
  • 30.2 years
  • β,γ
Stated Uncertainty
  • ± 15%


PASCO Radioactive Source Disclaimer - Please review prior to purchase

Before purchasing PASCO radioactive sources:

Local, national, and international regulations may restrict the purchase, storage, transport, use or disposal of radioactive sources.  Please  consult your local regulations to ensure your compliance before you purchase radioactive sources.

  • PASCO advertised sources are direct shipped to customers from Spectrum Techniques (  Please review their "Terms and Conditions" page before purchasing.
  • Once shipped, purchased sources are "Non-Cancellable" and "Non-Returnable". Radioactive sources cannot be returned under any circumstances including "End of  Life" disposal.


  • PASCO generally advertised sources are USNRC License Exempt (US only). 
  • International exempt sources (per the International Atomic Energy Agency) are  available for international customers or by request.