o-Diquat Dibromide Reference Standard from China
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 — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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