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2931.90.15.00/Sodium Tetraphenylboron for Potassium Assay/China

Sodium Tetraphenylboron for Potassium Assay from China

Specialty sodium tetraphenylboron formulated for potassium assay kits in clinical and environmental labs, remains under HTS 2931.90.15.00 as the principal aromatic organo-inorganic compound. Its use as a precipitant aligns with chemically defined status in Chapter 29.

Duty Rate — China → United States

18.3%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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Import Tips

• Include method validation references in import docs; ensure GMP compliance for lab-grade imports; test for moisture content to maintain efficacy during shipping

Sodium Tetraphenylboron for Potassium Assay from China — Import Duty Rate | HTS 2931.90.15.00