Save time with this exposure calculator for Iridium-192, Selinium-75 and Cobalt-60 sources.No more need to calculate the formula or use of the "old-school plastic calculator". Simply fill in the thickness, activity(in Curies) and source-film-distance and you get the correct exposure time. R factor for different densities and film types.

Among included elements are;

• Iridium

• Selenium

• Cobalt