Polonium-208 Mixture from China
Polonium-208 isotopic mixture with carriers for neutron initiator research and development. Mixtures containing listed Polonium-208 with dominant radioactivity classify under HTS 2844.42.00.00. R&D quantities typically.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• R&D exemption application with peer-reviewed protocol
• Isotopic ratio declaration critical; specify Po-208/Po-209 ratio
• Small quantity exemption may apply (<100 μCi); verify thresholds