2804.29.00.30 - Isotopically pure rare gases having a purity of 99 percent or more by volume 🖩

This HTS classification, 2804.29.00.30, specifically addresses isotopically pure rare gases that meet a stringent purity standard of 99 percent or more by volume. These are not simply any rare gases but those that have undergone processes to isolate specific isotopes, resulting in an exceptionally high concentration of a particular isotopic form. This level of purity is critical for applications requiring precise isotopic composition, such as in scientific research, advanced medical imaging, or specialized industrial processes where the isotopic signature is paramount.

Distinguishing this category from its siblings, 2804.29.00.10 (Helium) and 2804.29.00.20 (Neon), highlights the specific nature of the covered gases. While Helium and Neon are distinct rare gases, this classification pertains to rare gases *other than* Helium and Neon that have been isotopically purified to the 99 percent or greater threshold. The sibling category 2804.29.00.55 also covers "Other" rare gases but does not specify the requirement for isotopic purity of 99 percent or more by volume. Therefore, 2804.29.00.30 is reserved for those highly purified, non-Helium/Neon rare gases where isotopic composition is the defining characteristic.

As a leaf node in the HTS structure, this classification does not have further subdivisions. The defining criteria for entry into this category are the gas being a rare gas (other than Helium or Neon), its isotopic purity, and the specified volume percentage of 99 percent or more. Practical classification relies on certificates of analysis and technical specifications provided by the importer to confirm the isotopic composition and purity level of the imported rare gas.