Carbon-14 Labeled Urea from Canada
Urea with carbon-14 isotope substitution, used in biochemical tracer studies and radiometric dating. Classified in HTS 2845.90.0100 as an organic compound of a non-2844 isotope.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include half-life and activity concentration in docs; ensure CDR registration for research chemicals; use lead-shielded packaging per DOT rules