Krypton-85 Industrial Tracer
Krypton-85 industrial tracer is a low-activity radioactive isotope of krypton used for leak detection. It is classified under 'other' rare gases, but only if its radioactivity is below the threshold for heading 28.44; otherwise, it falls under radioactive isotopes.
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 |
More Specific Codes
This product may fall under a more specific subheading:
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
• Verify the specific radioactivity (Bq/g) to ensure it is below the 74 Bq/g threshold for heading 28.44
• Obtain a Canadian Nuclear Safety Commission (CNSC) import permit if the activity exceeds limits
• Provide safety data sheets to CBSA
Related Products under Tariff item 2804.29.00
Argon-36 Isotopically Pure Gas Cylinder
Argon-36 gas with 99%+ volume isotopic purity, imported in compressed cylinders for geochronology and stable isotope studies. It is an isotopically pure rare gas.
Argon-38 Calibration Gas
Argon-38 calibration gas is a stable isotope of argon, a rare gas, mixed at trace levels in a 1-liter cylinder for mass spectrometry calibration. It qualifies as a separate chemical element under Chapter 28, as it is not a radioactive isotope and falls under the 'other' rare gases category.
Argon Gas for Welding
High-purity argon gas for welding is a rare gas in elemental form, used as an inert shielding atmosphere in MIG/TIG welding. It falls under tariff item 2804.29.00 as 'other' rare gases, distinct from hydrogen and helium.
Helium-3/Helium-4 Hyperpure Mixture
A hyperpure helium mixture with He-3 isotopically enriched to >99% of helium content, used in dilution refrigerators for ultra-low temperature physics. It is an isotopically pure rare gas.
Helium-3 Research Gas
Helium-3 research gas is an isotopically separated rare gas used in neutron detection and low-temperature physics. Although helium has a specific subheading, helium-3 is classified under 'other' rare gases because it is an isotope not covered by the standard helium subheading.
Helium for Airship Inflation
Aviation-grade helium for airship inflation is a rare gas in elemental form, used for lift. It falls under tariff item 2804.29.00 as 'other' rare gases, as helium is not separately classified in this subheading.