Gaseous Diffusion Barrier Modules
> Gaseous diffusion barrier modules are porous membrane units that enable selective diffusion of lighter isotopes through microscopic pores in UF6 gas streams. They are integral parts of isotopic separation apparatus and are classified under tariff item 8401.20.00 as parts thereof.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the modules are used for general gas filtration rather than isotopic separation
Filtering or purifying machinery for gases is classified under heading 8421.
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
• > Document that the modules are specifically designed for use in gaseous diffusion isotope separation, not as generic filters
• Include the membrane pore size and material composition in the product documentation for CBSA review
• Verify whether the modules are subject to controlled goods regulations under Canada's Nuclear Non-Proliferation Import and Export Control Regulations
Related Products under Tariff item 8401.20.00
Calutron Electromagnetic Separator
> A calutron electromagnetic separator is a device that ionizes a material and uses magnetic fields to deflect ions of different masses along distinct paths, enabling the collection of separated isotopes. It is dedicated apparatus for isotopic separation, falling squarely under tariff item 8401.20.00.
Cascade Gas Centrifuge Assembly
> A cascade gas centrifuge assembly is an integrated bank of gas centrifuges connected in series to achieve high isotopic separation factors, typically for uranium enrichment. As a complete, interconnected system designed solely for isotopic separation, it is classified under tariff item 8401.20.00.
Gas Centrifuge for Uranium Enrichment
> A gas centrifuge for uranium enrichment is a high-speed rotating machine that uses centrifugal force to separate uranium isotopes U-235 and U-238 in gaseous UF6 form. It is specialized apparatus for isotopic separation and therefore falls under tariff item 8401.20.00.
Heavy Water Distillation Column
> A heavy water distillation column is a fractional distillation apparatus designed to separate deuterium from protium in water vapor streams based on boiling point differences. It is dedicated machinery for isotopic separation and falls under tariff item 8401.20.00.
Laser Isotope Separation System
> A laser isotope separation system uses precisely tuned lasers to selectively excite and ionize specific isotopes for separation, often applied to uranium or heavy water production. It is apparatus dedicated to isotopic separation and is classified under tariff item 8401.20.00.
UF6 Gas Handling Manifold for Centrifuges
> A UF6 gas handling manifold for centrifuges is a specialized valve and piping assembly used to feed, enrich, and withdraw uranium hexafluoride gas in centrifuge cascades. It is a part of isotopic separation apparatus and falls under tariff item 8401.20.00.