Specifications for Regenerant Chemicals

Regenerating ion exchange resins restores resin to its original ionic form. The use of proper regenerant chemicals in correct concentration is critical to achieve optimal elution and prolong the resin’s useful life. However, the use of poor quality regenerant can result in resin fouling and degradation. It is important to follow the maximum level of acceptability for contaminants in regenerant chemicals as well as the specific suggested values for the strength of dilute regenerant for each individual system and resin type. Any deviation from the specifications can cause loss of operating capacity and deterioration in output quality at minimum, and in extreme cases, osmotic shock, poisoning and irreversible fouling of the resin.

The tables below show typical chemical and physical properties for regenerant chemicals, as well as maximum acceptable levels for contaminants.