Neon-20 Isotopically Pure Gas from China
Neon-20 (Ne-20) enriched to greater than 99% isotopic purity by volume, classified in HTS 2804.29.0030 as isotopically pure rare gases. Used in precision mass spectrometry and nuclear physics experiments.
Duty Rate — China → United States
28.7%
Rate breakdown
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)
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
• Submit third-party lab analysis proving Ne-20 >99% purity during customs entry
• Use UN-approved gas cylinders; include pressure test certificates in documentation
• Distinguish from lighting neon (2804.40) by declaring scientific/research end-use