USP Lithium Carbonate for Thyroid Function Tests from Japan
Pure USP-grade lithium carbonate used in laboratory reagents for thyroid hormone assays. HTS 2836.91.0010 due to USP specification for this chemically defined inorganic carbonate.
Duty Rate — Japan → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Label as lab chemical to avoid pharma drug scrutiny
• Include SDS with heavy metal limits
• Pitfall: retail packaging may trigger 3824 diagnostic reclass