Helium-3 Cryogenic Fluid from Mexico
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 — Mexico → United States
10%
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
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