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2804.29.00.30/Argon-36 Isotopically Pure Gas Cylinder/Mexico

Argon-36 Isotopically Pure Gas Cylinder from Mexico

Argon-36 (Ar-36) gas with 99%+ volume isotopic purity, imported in compressed cylinders under HTS 2804.29.0030 for isotopically pure rare gases. Essential for geochronology and stable isotope studies.

Duty Rate — Mexico → United States

3.7%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
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Import Tips

• Declare cylinder specifications and tare weight; ensure DOT 3A/3AA certification

• Provide end-use statement for research to qualify for potential duty exemptions

• Monitor for reclassification if purity falls below 99% threshold during testing