There are many different ion exchange resin manufacturers including Purolite, Dow, Sybron/Bayer, Thermax, Rohm and Haas and ResinTech. We are often asked to provide a resin that is the closest equivalent to the ion exchange resin they have or need to purchase. This is aÂ Resin EquivalencyÂ list we use internally of the most common ion exchange resins and not an exhaustive list of all ion exchange resin equivalencies. Res-Kem does not guarantee the accuracy of this listing. It is, to the best of our knowledge, correct. Contact us to confirm a selection.