Isotopically Pure Helium-3 Gas from Mexico
Helium-3 (He-3) is a rare stable isotope of helium with isotopic purity exceeding 99% by volume, classified under HTS 2804.29.0030 as an isotopically pure rare gas. It is used in cryogenic research and neutron detection due to its unique nuclear properties.
Duty Rate — Mexico → United States
3.7%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Verify isotopic purity certification from supplier exceeding 99% by volume to meet HTS 2804.29.0030 criteria
• Obtain Material Safety Data Sheets (MSDS) and ensure compliance with DOT regulations for compressed gas transport
• Avoid misclassification as standard helium (2804.29.0010); declare isotopic composition accurately to prevent audits