Hyperbaric Oxygen Therapy Gas
Hyperbaric oxygen therapy gas is ultra-pure oxygen (>99.99%) used in medical hyperbaric chambers for treating decompression sickness and wound healing. It is classified under tariff item 2804.40.00 as elemental oxygen, distinct from pharmaceutical preparations.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the oxygen is put up in measured doses for retail sale
Section note 2 excludes goods in measured doses for retail sale from Chapter 28.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the oxygen meets Health Canada requirements for medical gases, including a Drug Identification Number (DIN) if applicable
• Provide a certificate of analysis showing purity and compliance with pharmacopoeia standards
• Declare the gas separately from the cylinder, which is returnable packaging
Related Products under Tariff item 2804.40.00
Aviation Breathing Oxygen
Aviation breathing oxygen is high-purity oxygen gas meeting military specifications for use in aircraft emergency oxygen systems and pilot breathing masks. It is classified under tariff item 2804.40.00 as elemental oxygen, a non-metal of Chapter 28, regardless of its intended aviation use.
High-Purity Research Oxygen-18 Isotope
High-purity oxygen-18 isotope gas, enriched to over 97%, is used in PET imaging tracers and metabolic research. As a stable isotope of a non-metal, it remains classified under tariff item 2804.40.00 as elemental oxygen, not as a radioactive substance.
Industrial Compressed Oxygen Gas
Industrial compressed oxygen gas is pure elemental oxygen compressed for welding, cutting, and metal fabrication. It falls under tariff item 2804.40.00 as a chemically defined non-metal, regardless of its industrial application.
Liquid Oxygen LOX
Liquid oxygen (LOX) is oxygen in cryogenic liquid form at -183°C, used for rocket propulsion, medical cryotherapy, and industrial freezing. It remains classified under tariff item 2804.40.00 as elemental oxygen, irrespective of its physical state.
Medical Grade Oxygen USP
Medical grade oxygen USP is high-purity oxygen meeting pharmacopoeia standards for respiratory therapy and anesthesia. It is classified under tariff item 2804.40.00 as elemental oxygen, even when intended for medical use.
Welding Oxygen CGA 346 Cylinder
Welding oxygen in CGA 346 cylinders is standard welding-grade oxygen for oxy-fuel applications. The gas is classified under tariff item 2804.40.00 as pure elemental oxygen; the cylinder is considered packaging and not separately classified.