Wofatit KPS Cation Resin
Wofatit KPS is a strong acid cation exchange resin used in demineralization processes, based on a polystyrene-divinylbenzene copolymer. It is supplied in primary bead form and operates by exchanging cations. This product falls under tariff item 3914.00.00 as an ion-exchanger based on polymers of heading 39.03, in primary forms.
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 imported as the base copolymer without ion-exchange functionality
The unmodified copolymer would be classified under heading 39.03.
If the resin is in finished articles, such as pre-packed ion-exchange columns
Finished plastic articles fall under heading 39.26.
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 resin is in primary forms and not in finished articles
• Verify the polymer base to confirm classification under heading 39.03
• Keep technical documentation to support the ion-exchange function
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