Promethium-147 Beta Source from Japan
Promethium-147 used in thickness gauges for paper/plastic film manufacturing. Falls under HTS 2844.43.00.21 as chemically defined compound of listed rare earth isotope. Chapter 28 note 4 explicitly covers promethium.
Duty Rate — Japan → 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
• Short half-life (2.6 years) requires activity verification within 30 days of shipment
• Use EXEMPT WHITE-II labeling for low activity industrial gauges to simplify import
• Document as 'not mixed with organic compounds' to avoid Chapter 29 reclassification