Endrin Reference Standard 99% Pure from China
Endrin Reference Standard 99% Pure is a high-purity analytical grade of the epoxide compound used for calibration in pesticide residue testing laboratories. As a separate chemically defined organic compound with three-membered ring, it qualifies for HTS 2910.50.00.00. Essential for environmental monitoring and quality control in agriculture.
Duty Rate — China → United States
39.8%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Provide NIST-traceable certificate of analysis showing ≥99% purity to confirm Chapter 29 classification
• Declare as 'Reference Standard' on commercial invoice; lab-use exemption may apply for certain EPA restrictions
• Ship in amber glass ampoules with inert atmosphere; avoid temperature excursions above 25°C during transit