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| IEX resin | Type | Functional group | Form |
|---|---|---|---|
| Amberlite MB20 | Mixed bed strong acid cation and base anion | Sulfonic acid/trimethylammonium | H/OH |
| Amberlite IR-120 | Strong acid cation | Sulfonic acid | H |
| Amberlite IRN78 | Strong base anion | Trimethylammonium | OH |
| Amberlite IRA-67 | Weak base anion | Tertiary amine | Free base |
| Lewatit VP OC 1065 | Weak base anion | Primary amine | Free base |
