Other
Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined: > Other
Duty Rate (from China)
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2845.90.01.00
Tritium Gas (HT)
Tritium gas, the radioactive isotope of hydrogen (HT), used in nuclear research and fusion experiments. Classified under HTS 2845.90.0100 as an isotope other than those in heading 2844, specifically a non-heading 2844 isotope in gaseous form.
Deuterium Oxide (Heavy Water, D2O)
Deuterium oxide, or heavy water, a compound of the deuterium isotope used as moderator in nuclear reactors. Falls under HTS 2845.90.0100 as a compound, organic or inorganic, of isotopes not in 2844.
Carbon-14 Labeled Urea
Urea with carbon-14 isotope substitution, used in biochemical tracer studies and radiometric dating. Classified in HTS 2845.90.0100 as an organic compound of a non-2844 isotope.
Helium-3 Gas
Helium-3, rare stable isotope used in cryogenics, neutron detection, and quantum computing. HTS 2845.90.0100 covers this as an isotope other than those in heading 2844.
Lead-208 Enriched Target
Enriched lead-208 metal target for nuclear physics experiments and isotope production. As a compound/element form of non-2844 isotope, classified under HTS 2845.90.0100.
Krypton-86 Gas Standard
Krypton-86 isotopic gas used as wavelength standard in laser metrology and spectroscopy. Falls under HTS 2845.90.0100 for other non-2844 isotopes.
Neon-22 Isotope
Neon-22 stable isotope for use in mass spectrometry standards and neon sign manufacturing. Classified HTS 2845.90.0100 as other isotope not in 2844.
Argon-38 Enriched Gas
Argon-38 stable isotope enriched gas for geological age dating and tracer studies. HTS 2845.90.0100 for such non-2844 isotopes.
Sulfur-34 Elemental
Elemental sulfur-34 stable isotope for NMR spectroscopy and metabolic studies. As other isotope, classified under HTS 2845.90.0100.
Nickel-64 Metal Powder
Nickel-64 stable isotope powder used in nuclear target fabrication and catalyst research. HTS 2845.90.0100 covers such isotope forms.
Oxygen-18 Water (H2^18O)
Water enriched with oxygen-18 isotope for PET imaging and metabolic research. As compound of non-2844 isotope, HTS 2845.90.0100.
Magnesium-25 Carbonate
Magnesium-25 enriched magnesium carbonate for nutrition studies and isotope dilution analysis. Classified HTS 2845.90.0100 as isotope compound.
Xenon-129 Gas Hyperpolarized Precursor
Xenon-129 isotope gas precursor for hyperpolarized MRI lung imaging. HTS 2845.90.0100 for such research isotopes.
Silicon-29 Wafer Blank
Silicon-29 enriched single crystal wafer blanks for quantum computing qubits. As isotope form, under HTS 2845.90.0100 (unworked).