HTS Codes / Chapter 28

2804.29.00.30

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

Duty rates

Unit of quantity

thousand m³

“General” applies to imports from most trading partners under normal trade relations. “Special” lists products eligible for reduced or duty-free treatment under programs like GSP, USMCA, CAFTA-DR, or individual free-trade agreements. “Column 2” applies to imports from countries without normal trade relations (currently Cuba and North Korea).

Chapter 28

Inorganic chemicals; compounds of precious metals and rare-earth metals (Section VI — Products of the chemical or allied industries)