UIS carries a broad range of ion exchange resins for water and waste water treatment, including deionization, softening, metals removal, product purification, resource recovery, and pollution control. In addition to its ion exchange resins, UIS supplies activated carbon and inorganic selective exchangers.

UIS is a supplier of Resintech, Purolite, Sybron/Ionac, Rohm&Haas, Dow as well as others.  We provide resin rebedding to the power, semiconductor, pharmaceutical and medical industries as well as in the commercial sector.



Deionization(low TOC)


Arsenic Removal

Selective Heavy Metals Removal

Tannin/color Removal


CATION RESINS(Sodium or Hydrogen form)

Water softening


Condensate Polishing

Selective Heavy metals removal


Additional Information 
Predicting Resin Capacity

The performance one can expect from a resin of a given mix of strong and weakly basic capacity depends not only on the condition of the resin but also on the type of service, and water analyses. This explains why some tanks with idential resins do better than others, from the same batch of regenerated float resin. Please read this article to learn more about predicting the operating capacity of strongly basic anion resins. 

Essentials of Ion Exchange

Natural water supplies contain dissolved salts, which dissociate in water to form charged particles called ions. These ions are usually present in relatively low concentrations and permit the water to conduct electricity. They are sometimes referred to as electrolytes. These ionic impurities can lead to problems in cooling and heating systems, steam generation, and manufacturing.  The common ions that are encountered in most waters include the positively charged cations; calcium and magnesium (hardness forming cations, which make a water "hard") and sodium. The negatively charged anions include alkalinity, sulfate, chloride, and silica. 

Ion exchange resins are particularly well suited for the removal of these ionic impurities for several reasons: the resins have high capacities for ions that are found in low concentrations, the resins are stable and readily regenerated, temperature effects are for the most part negligible, and the process is excellent for both large and small installations, for example, from home water softeners to huge utility installations. 

Learn more about the Essentials of Ion Exchange

Clean-up of of Chromate

Click below to read about an instance that a standard weak base anion resin was selected to remove dissolved hexivalent chromate, which is an anion. 

Clean-up of Chromate contaminated ground water