Liquefied Butane for Calibration Mixtures from Japan
Certified 99% n-butane in 10L cylinders for preparing gas calibration standards in environmental monitoring. Classifies HTS 2711.13.0020 as base butane before dilution. NIST-traceable purity.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Calibration gas requires uncertainty budget documentation from supplier
• Specify gravimetric filling method in certificates of analysis
• Avoid declaring shelf life; pure butane stable indefinitely unlike mixtures