AgSil 16H Potassium Silicate Fertilizer Grade from Canada
AgSil 16H is a horticultural potassium silicate solution (2.5:1 ratio) for plant nutrition and disease resistance. Still classified under HTS 2839.90.1000 as a commercial potassium silicate, not as a fertilizer preparation. Imported for greenhouse and hydroponics.
Duty Rate — Canada → United States
13.1%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Distinguish from Chapter 31 by lacking NPK guarantees
• EPA pesticide claims require FIFRA registration
• Avoid agricultural entry tariff benefits misuse