Helium-3 Cryogenic Fluid from China
Liquefied Helium-3 used in dilution refrigerators to achieve millikelvin temperatures. This product is specifically the He-3 isotope under HTS 2845.40.00.00, meeting the definition of isotopes with modified composition. Essential for low-temperature physics experiments.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Use cryogenic-rated containers with safety data sheets; declare exact isotopic purity on commercial invoice; anticipate customs holds for verification of non-radioactive status