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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If radioactive or specific activity exceeds 74 Bq/g
Radioactive isotopes or compounds with specified activity levels fall under heading 2844 per chapter note 4.
If for bulk helium-4 dominant mixtures
Predominantly He-4 helium classifies as neon/helium under 2804, not as separated He-3 isotope.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide isotopic enrichment analysis certificates; comply with EAR licensing for high-purity isotopes; check for dual-use restrictions under Commerce Control List
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.
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.
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.
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.