Sigma-Aldrich Radiochemicals offers an extensive line of Carbon-14 and Tritium radiolabeled isotopes. Our radiochemicals are packaged in convenient sizes. Carbon-14 and Tritium radiolabeled isotopes are ready to ship. Our radiochemicals are rigorously assayed and are supported from the leading manufacturer of Carbon-14 and Tritium radiochemicals. Check out our wide selection of radiochemicals below, including Carbon-14 radiolabeled isotopes, Tritium radiolabeled isotopes and surplus compounds for Carbon-14 and Tritium radiolabeled isotopes.