Isotopes are forms of an element, therefore their nuclei have the same atomic number — the number of protons in the nucleus — but different mass numbers because they contain different numbers of neutrons.
The word isotope, meaning at the same place, comes from the fact that all isotopes of an element are located at the same place on the periodic table.
Collectively, the isotopes of the elements form the set of nuclides. A nuclide is a particular type of atomic nucleus, or more generally an agglomeration of protons and neutrons. Strictly speaking, it is more correct to say that an element such as fluorine consists of one stable nuclide rather than that it has one stable isotope.
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Stable Isotope Suppliers - An extensive list compiled by The University of Vermont.
Meta Description: [ On a hill overlooking the shores of Lake Champlain, at the foot of the Green Mountains, the University of Vermont combines faculty-student relationships most commonly found in a small liberal arts college with the resources of a major research university. ]
Advanced Materials Technologies Ltd, - AMT, supplies stable isotopes, deuterated solvents and high purity materials for medical and chemical research.
Meta Description: [ We supply stable isotopes, deuterated solvents and high purity materials for medical and chemical research ]
Cambridge Isotope Laboratories - (CIL) A producer of stable isotope labeled compounds and stable isotope separations.
Meta Description: [ Cambridge Isotope Laboratories, Inc (CIL) is the world's premier producer of stable isotope labeled compounds and the world leader in the field of stable isotope separations. CIL has the most complete product offering of stable isotope labeled compounds available. ]
Center of Molecular Research - Representative of a Russian producer of Oxygen-18 water situated in Saint Petersburg
Chemgas - Chemgas supplies high purity rare gases and isotopically enriched gases.
Meta Description: [ Major supplier of enriched stable isotopes : metal stable isotopes, noble gas isotopes ( helium-3, neon isotopes, krypton isotopes, xenon isotopes and isotopic gas mixtures ) and isotopes semiconductors gases used in Science, Medecine, Research and Industry. ]
CNL Scientific Resources, Inc. - A supplier of isotopes, metals, crystals and other engineered materials to manufacturers of pharmaceuticals and instruments.
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Gamma Radiation Sources - CNEA (Argentina's nuclear energy agency) produces qualified cobalt-60 sources for irradiation plants and for medical use.
Gas Oils JSC - Manufactures carbon 13 labeled carbon dioxide using lasers.
Hartmann Analytic GmbH - Supplier of radio-labeled chemicals, products for radiation protection. Also offers labeling-services and custom synthesis.
Meta Description: [ Wir sind Ihr Partner im Bereich Radioaktivitt, Nukleotide 32P, 33P, 35S, 51Cr, 14C, 35S, 125I, 3H, Tritium Markierungsdienste, Sondersynthesen, Strahlenschutz. ]
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Hyox18 - Isotope O18 enriched water used to produce fluoro-deoxyglucose for PET.
Meta Description: [ hyox18 the world's #1 18o enriched water used to produce fdg for positron emission tomography designed exlusively for the pet community and is used in over 150 pet centers worldwide. ]
Icon Services - Supplier of compounds labeled with stable isotopes.
Meta Description: [ Producers and Distributors of quality Stable Isotopes, Labeled Compounds and gases for Research and Industry. ]
International Isotope Society - The IIS provides a forum for all chemists involved in radiochemical synthesis and analysis to obtain and share information outside of their immediate area of employment and expertise.
Meta Description: [ home ]
International Isotopes Clearing House, Inc. - Catalog listing of radioisotopes, 14C- and 3H-labeled compounds for medical research, 33P- and 125I- available.
Isoflex - Stable isotopes for use in science, medicine and industry from Russian producers.
Meta Description: [ ISOFLEX is a well-established, reliable distributor of a broad range of stable and radioactive Isotopes produced by Russian manufacturers. ]
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IsoSciences - Custom stable isotope labeling and small scale organic synthesis including the preparation of metabolites and PET precursors and standards.
Meta Description: [ IsoSciences LLC specializes in preparing both stable isotope labelled and unlabeled mass spec standards, pharmaceuticals, steroids, pesticides, biologicals, PET precursors and PET standards. If you need deuterium, carbon-13 or nitrogen-15 labeled compounds, Isosciences can meet your every need. ]
Isotec - A member of the Sigma-Aldrich family, manufacturer of stable isotope labeled compounds.
Meta Description: [ Isotec is the world's largest producer of enriched stable isotopes. We offer isotopically-labeled products for agriculture, NMR, breath tests, nutrition and metabolism, in addition to numerous other labeled isotope products. We also perform custom synthesis for stable isotopes. ]
Martek Biosciences - can supply isotopically enriched biochemicals
Meta Description: [ Martek Biosciences Corporation is a leader in the development and commercialization of products derived from microalgae. Martek's current products include nutritional oils used as an infant formula ingredient and as a nutritional supplement, products used in pharmaceutical research, fluorescent a... ]
MDS Nordion - Radioisotope technology used to prevent, diagnose and treat disease. Products and services include nuclear medicine, radiation therapy for cancer, irradiation sterilization and food irradiation.
Meta Description: [ MDS Nordion is a global leader in radioisotope technology used to prevent, diagnose and treat disease. People around the world benefit from the products and services MDS Nordion supplies. ]
Moravek Radiochemicals - Manufacturer of tritium and carbon 14 labeled radiochemicals for AIDS and cancer research.
Meta Description: [ Moravek Biochemicals, Inc. is a provider of high quality radiochemicals for the needs of the research community. We specialize in AIDS and Cancer radiochemicals for research. ]
Omicron Biochemicals Inc. - Supplier of single, multiple and uniform stable isotope labeled saccharides and nucleosides (13C, 2H, 15N, 18O).
Meta Description: [ Omicron Biochemicals, Inc. is a biotechnology company specializing in the synthesis of stable isotopes for biomedical research. We offer single, multiple, and uniform labeling of saccharides, nucleosides and their derivatives with 13C, 2H, and 15N. Established in 1982, we are located in South Be... ]
PerkinElmer Life and Analytical Sciences - Radiochemicals including radiolabeled ligands, P32, amino acids, macromolecules, microspheres, precursors, and radionuclides
Meta Description: [ Radiochemicals - NEN Brand Radiochemicals from PerkinElmer ]
PicoTrace - Equipment for trace element and isotope analysis.
Meta Description: [ PicoTrace: Equipment and consultig concerning trace element and isotope analysis and clean lab technologies. ]
Proftec - Supplier of pure Copper powder.
Meta Description: [ Разработка стиля компании, web дизайн, программирование, продвижение, flash разработки, разработка макетов для полиграфии. ]
Radioisotopes in Medicine - Stable and unstable isotopes are covered.
RITVERC GmbH - A producer and worldwide supplier of radioisotope products for science, industry, and medicine. Product list includes radiation sources, labelled compounds, stable isotopes, and radiopreparations.
Meta Description: [ Scientific research in nuclear physics radiochemistry geochemistry ecology nuclear industry problems radioecology isotope production
RITVERC develop design produce and deliver isotope products for science industry and medicine
]
Spectra Gases - Specialty gases for high technology markets. Our core business is pure gases and gas mixtures for excimer lasers and lamps. Isotopic en-richment of gases for research.
Meta Description: [ Spectra Gases Inc. is a leading supplier in next generation fine chemicals and high purity gases for the research, medical, fiber optic, semiconductor, environmental, laser, lighting, and high purity gas handling equipment. ]
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STB Isotopes - Stable isotopes for science, medicine and industry, a list of some rare and unusual stable isotopes.
Meta Description: [ Stable isotopes for medicine, science and industry - Isotopen fuer Medizin und Wissenschaft ]
Techsnabexport - Supplier of Russian-produced radioisotopes and labeled compounds.
Meta Description: [ ОАО "Техснабэкспорт" ]
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The National Stable Isotope Resource at Los Alamos - The National Stable Isotope Resource (SIR) advances biomedical applications of compounds labeled with the stable isotopes 13C, 15N, 17, 18O, 33, 34S, and 77Se.
Meta Description: [ The SIR develops new, efficient routes for synthesizing stable isotope labeled
compounds (13C, 15N, 17,18O, 33,34S, 77Se), provides training in the synthesis and
applications of labeled compounds, and distributes labeled compounds that are not
available from commercial sources to accredited... ]
U.S. DOE Isotope Production and Distribution - U.S. Department of Energy isotopes catalog. Quite an extensive list.
Meta Description: [ The Department of Energys (DOE)
Isotope Production and Distribution Program (IPD) provides a wide
range of isotope products and services to customers worldwide.
The IPD Program is committed to produce and distribute
radioisotopes and enriched stable isotopes for research or
develo... ]
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U.S. DOE Isotope Programs - Information about U.S. Department of Energy production of isotopes programs.
ViTrax Radiochemicals - Manufactures Tritium, Carbon-14, and Sulfur-35 radiolabeled products and offers custom radiosynthesis under cGMP.
Wellington Laboratories - Produces 12C and 13C halogenated reference standards of environmental concern, including chlorinated and brominated dioxins, furans, biphenyls and diphenyl ethers. Includes corporate and product details, online catalog and contacts.
Meta Description: [ Wellington Laboratories Inc. (WELLINGTON) is a world-leading producer and supplier of reference standards of potentially toxic, halogenated aromatic compounds that are of environmental concern. ]
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