Research-Grade Krypton from Mexico
Ultra-high purity krypton (>99.999%) for scientific research in spectroscopy and particle physics experiments. It is a chemically defined rare gas under HTS 2804.29.0055, within Chapter 28's scope for nonmetals, distinct from doped or mixed forms excluded by notes.
Duty Rate — Mexico → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Submit third-party lab purity reports to customs for verification against Chapter 28 chemical definition requirements
• Register with CBP ACE for prior notice if importing for lab use; avoid delays with incomplete hazmat forms