Research Grade Helium-3
Ultra-pure Helium-3 (>99.9%) for university and national lab research in nuclear physics. HTS 2845.40.00.00 covers this non-radioactive isotope with enriched composition as per HTSUS notes. Supplied in small high-pressure cylinders.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If personal effects or lab equipment returns
US goods returned after repair or research use may enter duty-free under 9802 provisions.
If natural radioactive isotopes
Only specific radioactive isotopes are in 2844; stable He-3 excluded.
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Import Tips & Compliance
• Attach purchase orders showing research affiliation; maintain chain-of-custody records; declare value based on isotopic rarity, not container cost
Related Products under HTS 2845.40.00.00
Helium-3 Gas
Helium-3 is a rare stable isotope of helium used primarily in cryogenic research and neutron detection. It falls under HTS 2845.40.00.00 as a non-radioactive isotope distinct from those in heading 2844. This chemically defined isotope is typically supplied in gaseous form for scientific applications.
Enriched Helium-3 Isotope
Enriched Helium-3 refers to helium with artificially increased He-3 content beyond natural abundance (0.000137%). Classified in HTS 2845.40.00.00 per chapter notes for modified isotopic compositions excluding mono-isotopic natural states. Used in ultra-low temperature physics and quantum computing research.
Helium-3 Cryogenic Fluid
Liquefied Helium-3 used in dilution refrigerators to achieve millikelvin temperatures. This product is specifically the He-3 isotope under HTS 2845.40.00.00, meeting the definition of isotopes with modified composition. Essential for low-temperature physics experiments.
Helium-3 Neutron Detector Fill Gas
High-purity Helium-3 gas filled into detector tubes for thermal neutron detection in security and research. Classified as the isotope itself under HTS 2845.40.00.00, not as a finished detector. The isotope's neutron absorption properties drive its specialized use.
Helium-3/Helium-4 Mixture (Dilution Grade)
Pre-mixed He-3/He-4 solution at ~3-10% He-3 concentration for dilution refrigerator stills. The isotopic content qualifies under HTS 2845.40.00.00 as enriched helium isotopes. Used directly in cryostats for phase separation cooling.
Helium-3 Polarized Gas
Spin-polarized Helium-3 gas used in neutron polarizers and MRI lung imaging research. Classifies as the isotope under HTS 2845.40.00.00 despite polarization, as it's chemically the same compound. Produced via optical pumping techniques.