Gadolinium-148 Oxide from China
Gadolinium-148 oxide compound provides intense neutron emission for calibration and weapons effects testing. Classified under HTS 2844.42.00.00 as a compound of the specifically named Gadolinium-148 isotope. Long half-life makes it valuable for standards.
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
• Submit detailed neutron emission spectra; reference NIST standard if applicable
• Encapsulate in gold/rhenium matrix; provide criticality safety analysis