Research Grade Helium-3 from Mexico
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.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Attach purchase orders showing research affiliation; maintain chain-of-custody records; declare value based on isotopic rarity, not container cost