Technical DDT 75% Wettable Powder Reference from Canada
Standardized technical DDT containing specified HCB impurities for historical pesticide residue studies. Classified under HTS 2903.92.00.00 as specifically named DDT despite formulation. Chapter 29 note (f) allows stabilizers necessary for preservation.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Special EPA waiver required for 'archival reference standards'; cannot be used for application
• Declare exact HCB impurity levels (<0.3%) matching historical formulations in commercial invoice
• Segregate from agricultural chemicals during customs examination to avoid 3808 misclassification