Raims, Ltd. - UK based official supplier of stable and radioactive isotopes and radioactive sealed sources from Russian produ ... cers. The company has commercial and technical relationships with all of the major production institutions in Russia. Direct supplies. Worldwide sales. OUR ISOTOPES: C-14 carbonate (C-14), Strontium-90 (Sr-90), Helium-3 (He-3), Krypton-85 (Kr-85), Americium-241 (Am-241), Uranium-234 (U-234). OUR SEALED RADIOACTIVE SOURCES: Cobalt-60 (Co-60), Americium-241 (Am-241), Californium-252 (Cf-252), Cesium-137 (Cs-137), Am-241/Be (Am/Be) read more