Colloidal Gold Solution from Mexico
A stable suspension of gold nanoparticles in water or other solvent, used in medical diagnostics and nanotechnology applications. Classified under HTS 2843.10.00.00 as colloidal precious metals because it consists of finely divided gold particles dispersed in a liquid medium, meeting the definition of a colloid.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify particle size and stability to confirm colloidal nature; non-colloidal gold compounds fall under different headings
• Provide certificates of analysis showing precious metal content and dispersion for customs valuation
• Ensure proper labeling as hazardous if concentrated to comply with DOT and EPA import regulations