Polishing Grade Ceria for Precision Optics from Mexico
Polishing Grade Ceria for Precision Optics is a calcined cerium oxide powder engineered for polishing telescope mirrors, laser optics, and ophthalmic lenses. It is classified under tariff item 2846.10.00 as a chemically defined cerium compound, meeting the criteria of Chapter 28 notes for inorganic compounds of rare-earth metals. The controlled particle distribution (1-3 microns) ensures consistent polishing performance without altering its chemical identity.
Duty Rate — Mexico → Canada
Import Tips
• Ensure the product is invoiced as pure cerium oxide with a certificate of analysis to confirm chemical definition
• Declare the end use (optical polishing) to the CBSA if requested, as it supports classification under 2846.10.00
• Verify whether the product contains any added binders or surfactants, which could shift classification