Colloidal Gold Solution
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically defined gold compounds, not colloidal
Soluble gold salts like gold chloride are classified as defined compounds of precious metals, not colloids.
If diagnostic reagents containing colloidal gold
Prepared lab reagents for retail sale with binders shift to diagnostic preparations heading.
If used in immunodiagnostic blood-grouping reagents
When incorporated into finished medical test kits, it becomes a blood diagnostic product.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under HTS 2843.10.00.00
Colloidal Silver Suspension
Liquid dispersion of silver nanoparticles for antimicrobial applications in supplements and wound dressings. Falls under HTS 2843.10.00.00 as it is a colloidal form of the precious metal silver, with particles suspended without settling.
Colloidal Platinum Dispersion
Aqueous suspension of platinum nanoparticles employed as a catalyst in chemical reactions and fuel cells. Classified in HTS 2843.10.00.00 due to its colloidal precious metal composition, where platinum particles are evenly dispersed.
Colloidal Palladium Solution
Stable liquid colloid of palladium nanoparticles used in hydrogenation catalysis and electronics. HTS 2843.10.00.00 applies as it is a dispersion of precious metal palladium in colloidal form.
Colloidal Gold Diagnostic Reagent
Gold nanoparticle colloid conjugated with antibodies for lateral flow assays in pregnancy tests. Remains under HTS 2843.10.00.00 if imported as bulk colloid prior to conjugation.
Colloidal Silver Nanoparticles
Water-based colloid of silver nanoparticles for textile antimicrobial treatments. HTS 2843.10.00.00 covers this as a precious metal colloid used industrially.
Colloidal Platinum Catalyst Precursor
Ethanol dispersion of platinum nanoparticles for depositing onto fuel cell electrodes. Classified as colloidal precious metal under HTS 2843.10.00.00.