Californium-252 Neutron Source from Mexico
Californium-252 sealed sources emit neutrons for industrial applications like moisture gauging and reactor startup. Classified under HTS 2844.43.00.21 as it contains the specifically listed isotope californium-252. These are chemically defined radioactive isotopes per Chapter 28 notes.
Duty Rate — Mexico → United States
0%
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
• File NRC Form 741 at least 7 days before import; high specific activity requires Type B packaging
• Include dosimetry reports and decay chain analysis in import documentation
• Confirm exemption from other chapters via specific activity >74 Bq/g documentation