International Isotopes, Inc. engages in the manufacture of nuclear medicine calibration and reference standards cobalt tele therapy sources, as well as radioisotopes and radiochemical for medical research and clinical devices. It operates through the following segments: Radiochemical Products, Cobalt Products, Nuclear Medicine Standards, Radiological Services. The Radiochemical Products segment includes production and distribution of various isotopically pure radio chemicals for medical, industrial, or research applications. The Cobalt Products segment includes management of a cobalt irradiation contract, fabrication of cobalt capsules for tele therapy or irradiation devices, and recycling of expended cobalt sources. The Nuclear Medicine Standards segment consists of the manufacture of sources and standards associated with Single Photon Emission Computed Tomography imaging, patient positioning, and calibration or operational testing of dose measuring equipment for the nuclear pharmacy industry. The Radiological Services Segment concerns a wide array of miscellaneous services that consists of gemstone processing and field services that include source installation, removal, and radiation device decommissioning. International Isotopes was founded in November 1995 and is headquartered in Idaho Falls, ID.