Promethium-147 Beta Source Disks
Promethium-147 (atomic no. 61) oxide ceramic disks for beta thickness gauging in manufacturing, explicitly covered by heading 2844 note (a). Classified HTS 2844.43.00 as rare earth radioactive element.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rare-earth compounds (non-radioactive)
Stable promethium compounds would classify with other rare earths.
If in test instruments
Parts of radiation test instruments classify under 9024.
If Pm-147 waste residues
Radioactive residues containing Pm-147 classify under 2844.40.
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Import Tips & Compliance
• Provide beta endpoint energy (225 keV) and specific activity documentation
• Include Sm-147 daughter identification for decay chain
• Rare earth classification per 2844 note distinguishes from other chapters
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