Cesium-137 Chloride Sealed Sources from China
Cesium-137 chloride (CsCl) sealed sources are used in brachytherapy and calibration standards, as compounds of fission product Cs-137 (half-life 30 years). HTS 2844.43.00 applies to such chemically defined radioactive compounds.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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 NRC Form 741 (Radioactive Material Report) with shipment
• Include weld integrity testing for sealed sources per ANSI N542.2
• Differentiate from stable CsCl (2827.39) by providing specific activity >74 Bq/g certification