o-Diquat Dibromide Reference Standard from Canada
Certified reference material of o-diquat dibromide for analytical laboratory use in pesticide residue testing. Precisely classified under HTS 2933.99.1600 as the pure heterocyclic compound. Used for GC-MS calibration in environmental monitoring.
Duty Rate — Canada → United States
0%
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
• Include NIST-traceable certificate and chromatograms proving analytical reference purity
• Declare as 'analytical reference standard' with CAS 85-00-7 to avoid pesticide use assumptions
• Small package quantities (<1kg) reduce scrutiny but require precise documentation