Litmus Powder from Mexico
Litmus powder is a natural pH indicator made from lichens (Roccella spp.), turning red in acid and blue in base, used in laboratory testing and education. It qualifies under HTS 3203.00.10.00 as listed litmus, a lichen-derived (vegetable) coloring matter.
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
• Supply lichen species certificates to verify natural origin, avoiding synthetic indicator misclassification
• Include safety data sheets for lab chemical import compliance under TSCA