Hydrogen Calibration Gas Mixture
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If <90% hydrogen purity
Most calibration gases classified as chemical preparations, not pure elements.
If primarily nitrogen with trace hydrogen
Nitrogen as principal gas determines classification under rare gases.
If integrated in gas detection instruments
Gases in finished instruments classified with apparatus.
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Import Tips & Compliance
• Clearly label as 'certified calibration gas' with NIST-traceable certificates for customs acceptance
• Include chromatograph analysis showing exact composition percentages
Related Products under HTS 2804.10.00.00
Industrial Grade Hydrogen Gas
Compressed hydrogen gas used in industrial applications such as welding, metal cutting, and chemical synthesis. It falls under HTS 2804.10.00.00 as pure hydrogen, a nonmetal gas chemically defined in Chapter 28. Supplied in high-pressure steel cylinders for safe transport.
High-Purity Hydrogen for Laboratories
Ultra-pure hydrogen gas (99.999%) for analytical instruments like gas chromatographs and spectrometers. Classified under HTS 2804.10.00.00 as elemental hydrogen meeting Chapter 28 purity standards. Typically supplied in small lecture bottles or cylinders.
Fuel Cell Grade Hydrogen
Electrolyte-grade hydrogen gas for PEM fuel cells in vehicles and stationary power systems. Classified in HTS 2804.10.00.00 as pure elemental hydrogen, not as a fuel per Chapter 27 exclusions. Purity exceeds 99.97% with strict impurity limits.
Liquid Hydrogen for Rocket Propulsion
Cryogenically liquefied hydrogen (-253°C) used as rocket fuel oxidizer in aerospace applications. Remains under HTS 2804.10.00.00 as state of matter doesn't affect chemical classification of pure hydrogen. Transported in specialized dewars.
Medical Hydrogen Inhalation Gas
Pharmaceutical grade hydrogen gas for therapeutic inhalation therapy devices. Meets USP standards for medical use under HTS 2804.10.00.00 as chemically defined hydrogen. Supplied in medical gas cylinders with regulator assemblies.
Welding Hydrogen Gas Cylinder
Hydrogen gas specifically blended for oxy-hydrogen welding torches, supplied in 250 cubic foot cylinders. Falls under HTS 2804.10.00.00 as it qualifies as chemically defined hydrogen despite minor stabilizers permitted by chapter notes. Essential for high-temperature flame applications.