Carbon-14 Labeled Urea
>- Carbon-14 labeled urea is an organic compound of the radioactive carbon isotope carbon-14, used in biochemical tracer studies and radiometric dating. Although it is an organic compound, heading 28.45 covers compounds, inorganic or organic, of isotopes other than those of heading 28.44. However, because carbon-14 is a radioactive isotope, it is excluded from heading 28.45 by Note 1(A) to Section VI and must be classified in heading 28.44.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• >- Carbon-14 labeled compounds are radioactive and require a Canadian Nuclear Safety Commission (CNSC) import licence
• Declare the product under heading 28.44 and provide the specific activity in becquerels per gram
• Ensure packaging meets transport regulations for radioactive materials
Related Products under Tariff item 2845.90.00
Argon-38 Enriched Gas
>- Argon-38 is a stable isotope of argon, enriched for use in geological age dating and as a tracer in scientific studies. As a separate chemical element that is not radioactive, it falls under heading 28.45, which covers isotopes other than those of heading 28.44. The product is presented in gaseous form, typically in sealed cylinders for laboratory use.
Deuterium Oxide (Heavy Water, D2O)
>- Deuterium oxide, commonly known as heavy water, is a compound of the stable hydrogen isotope deuterium. It is used as a moderator in nuclear reactors and in various scientific and industrial applications. As a compound of an isotope other than those of heading 28.44, it is classified under heading 28.45.
Helium-3 Gas
>- Helium-3 is a rare, stable isotope of helium used in cryogenics, neutron detection, and quantum computing. It is a separate chemical element that is not radioactive, and therefore falls under heading 28.45, which covers isotopes other than those of heading 28.44. The product is supplied as a compressed gas in cylinders.
Krypton-86 Gas Standard
>- Krypton-86 is a stable isotope of krypton used as a wavelength standard in laser metrology and spectroscopy. As a non-radioactive isotope, it is classified under heading 28.45. The product is typically supplied in sealed glass or metal containers for laboratory use.
Lead-208 Enriched Target
>- Lead-208 enriched targets are metal foils or discs made of the stable isotope lead-208, used in nuclear physics experiments and isotope production. As an element in a form other than radioactive, it falls under heading 28.45. The product is supplied as a solid metal piece, typically with a high isotopic enrichment.
Magnesium-25 Carbonate
>- Magnesium-25 carbonate is a compound of the stable isotope magnesium-25, used in nutrition studies and isotope dilution analysis. As an inorganic compound of a non-radioactive isotope, it is classified under heading 28.45. The product is typically supplied as a powder or crystalline solid.