Oxygen-18 Water (H2^18O) from Mexico
Oxygen-18 water is water enriched with the stable isotope oxygen-18, used in PET imaging and metabolic research. It is a compound of a non-radioactive isotope, so it is not classified under heading 28.44. This tariff item covers compounds of isotopes other than those of heading 28.44.
Duty Rate — Mexico → Canada
0%
Import Tips
• Classify oxygen-18 water under tariff item 2845.90.00 as a compound of a stable isotope
• Provide a certificate of analysis showing the isotopic enrichment
• Ensure the product is not mixed with other chemicals that could affect classification