Other
Hydrogen, rare gases and other nonmetals: > Rare gases: > Other
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Subheadings
Products classified under HTS 2804.29.00
Neon Gas Cylinder
Compressed neon gas in a high-pressure steel cylinder, used primarily for neon signage and lighting applications. This falls under HTS 2804.29.00 as neon is a rare gas classified as 'other' nonmetals beyond hydrogen and helium. It is chemically defined and supplied in gaseous form for industrial use.
Argon Gas for Welding
High-purity argon gas in 40-liter cylinders, essential for MIG/TIG welding to provide inert shielding atmosphere. Classified under HTS 2804.29.00 as a rare gas 'other' nonmetal, distinct from hydrogen, helium, and their mixtures. Supplied as compressed gas meeting industrial purity standards.
Krypton Gas Laboratory Grade
Ultra-high purity krypton gas (99.999%) in specialized glass ampoules for spectroscopy and research applications. Falls under HTS 2804.29.00 as krypton is a rare gas categorized under 'other' nonmetals. Chemically inert and supplied in small quantities for scientific use.
Xenon Gas for Lighting
Purified xenon gas cylinders used in xenon arc lamps for cinema projectors and automotive HID headlights. Classified in HTS 2804.29.00 as xenon qualifies as 'other' rare gases in elemental form. High ionization potential makes it ideal for high-intensity lighting.
Helium-3 Research Gas
Isotopically separated helium-3 gas (3He) in cryogenic research containers for neutron detection and low-temperature physics. While helium heading exists, rare helium-3 falls under HTS 2804.29.00 as 'other' rare gases due to its scarcity and specialized applications. Supplied at extreme purity levels.
Radon Gas Calibration Standard
Trace radon-222 gas in sealed diffusion chambers for environmental radiation monitoring equipment calibration. Classified under HTS 2804.29.00 as radon represents 'other' rare gases, despite short half-life and radioactive properties below 2844 thresholds. Used strictly for calibration purposes.
Krypton-85 Industrial Tracer
Low-activity krypton-85 gas in steel cylinders used for leak detection in industrial systems and oil well logging. Falls under HTS 2804.29.00 as chemically defined rare gas below radioactive classification thresholds. Sealed system prevents personnel exposure.
Xenon-129 MRI Contrast Gas
Hyper-polarized xenon-129 gas in specialized medical delivery systems for lung MRI imaging research. Classified HTS 2804.29.00 as elemental rare gas despite medical application, meeting chemically defined criteria. Short shelf life requires rapid customs clearance.
Argon-38 Calibration Gas
Stable isotope argon-38 gas mixture (trace levels) in 1-liter cylinders for mass spectrometry instrument calibration. HTS 2804.29.00 applies as rare gas standard reference material. Certified against NIST traceable standards.
Neon-20 Research Isotope
Enriched neon-20 stable isotope gas for nuclear physics research and tracer studies. Classified under HTS 2804.29.00 as 'other' rare gases in elemental form. Supplied in lecture bottles with purity >99.9% isotopic enrichment.