Processed Kelp Ash Fertilizer Base from Mexico
Lightly processed ash from kelp incineration, used as a base for organic fertilizers high in trace minerals. Remains under HTS 2621.90.00.00 as unrefined seaweed ash.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify minimal processing to stay in 2621; heavy refinement goes to 3100 series
• Include mineral assay without deductions per statistical notes
• Label botanical origin to avoid mineral misclassification