Hydrogen Calibration Gas Mixture from Japan
5% hydrogen in nitrogen balance for gas detector calibration, technically pure hydrogen component but classified separately. Borderline case under HTS 2804.10.00.00 only if hydrogen dominates, but typically mixtures. Used in safety instrument calibration.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Clearly label as 'certified calibration gas' with NIST-traceable certificates for customs acceptance
• Include chromatograph analysis showing exact composition percentages