2939.80.00.10/Saxitoxin Reference Standard/Japan

Saxitoxin Reference Standard from Japan

Certified saxitoxin reference standard is high-purity saxitoxin for analytical calibration, classified under HTS 2939.80.0010. As a chemically defined alkaloid, it fits Chapter 29 despite reference use, not excluded as diagnostic reagent.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Include NIST or USP traceability certificate for customs verification

• Ship under UN2810 toxic substance protocols with proper labeling

• Pre-clear with CBP for controlled substance declaration