Standard Capsule Designs.

Activity Tolerance

± 15% from nominal.

Recommended Working Life

See Technical Information section.

Only typical sources are listed; inquiries are invited for alternative capsule designs and activities.

For high energy Beta applications, these Sr-90 Sources offer a long-lived radionuclide with beta energies up to ~2.3MeV. The activity is in a stable, homogeneous active element.

3203 capsule

Single-encapsulated stainless steel capsule with 0.002” (0.051mm) end window. ISO rating: 66545.


Sr-90 sources are made in batches at intervals several times per year. If the requested activity is available from stock, sources are normally delivered within two weeks. Please inquire for current availability.