Tritium Calibration Source from China
Sealed source containing adsorbed tritium for calibrating beta radiation monitors. Classified as a tritium compound under HTS 2844.41.00.00; NIST-traceable with certificate of activity. Used by health physics departments.
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
• ANSI N323A calibration standard reference; annual leak testing records; returnee program for depleted sources