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2845.40.00.00/Enriched Helium-3 Isotope/Mexico

Enriched Helium-3 Isotope from Mexico

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.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Provide isotopic enrichment analysis certificates; comply with EAR licensing for high-purity isotopes; check for dual-use restrictions under Commerce Control List