Relite SP120 Cation Resin
Relite SP120 is a strong acid gel-type cation exchange resin based on polystyrene-divinylbenzene copolymer, used for water softening applications. It is supplied in primary bead form and operates by exchanging calcium and magnesium ions. This product is classified 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 the copolymer is imported without ion-exchange functionalization
Unmodified polystyrene-divinylbenzene falls under heading 39.03.
If the resin is incorporated into finished articles like cartridges
Finished plastic articles are classified 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
• Confirm the resin is in primary forms and not mixed with additives that could affect classification
• Have the technical data sheet showing the polystyrene-divinylbenzene base ready
• Declare the product accurately as an ion-exchanger to avoid delays
Related Products under Tariff item 3914.00.00
Amberjet 4400 Uniform Particle Anion Resin
Amberjet 4400 is a uniform particle size strong base anion exchange resin used in condensate polishing, derived from a styrene copolymer. The resin is in primary bead form. As an ion-exchanger based on polymers of headings 39.01 to 39.13 (specifically polystyrene from heading 3903), it is classified under 3914.00.00.
Amberlite IR-120 Strong Acid Cation Resin
Amberlite IR-120 is a gel-type strong acid cation exchange resin based on a styrene-divinylbenzene copolymer, used in demineralization processes. The resin is in primary bead form. As an ion-exchanger based on polymers of headings 39.01 to 39.13 (polystyrene from heading 3903), it is classified under 3914.00.00.
Ambersep 900 Anion Resin
Ambersep 900 OH is a strong base anion exchange resin for nuclear applications, derived from polystyrene. The resin is in primary bead form. As an ion-exchanger based on polymers of headings 39.01 to 39.13 (polystyrene from heading 3903), it is classified under 3914.00.00.
Chelex 100 Chelating Resin
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Cholestyramine Resin USP Powder
Cholestyramine Resin USP Powder is a pharmaceutical-grade ion-exchange resin based on cross-linked polyvinylbenzyltrimethylammonium chloride. It is used to bind bile acids in the intestine for treating hypercholesterolemia. As a primary form (powder) of a polymer from headings 39.01 to 39.13, it falls under tariff item 3914.00.00.
Cholestyramine USP Ion-Exchange Beads
Cholestyramine USP Ion-Exchange Beads are uniform spherical beads of cross-linked polyvinylbenzyltrimethylammonium chloride, designed for bile acid sequestration in cholesterol-lowering therapies. The beads are in primary form, being a bulk granular material. This product is an ion-exchanger based on a polymer of headings 39.01 to 39.13, so it is classified under 3914.00.00.