In purified water, carbon dioxide dissociated to form a weak carbonic acid which reduced the capacity of anion exchange resins.
CO2 + H2O ⇔ H2CO3 ⇔ H+ + HCO3-
Impact on Laboratory Water Systems
Dissolved gases can impact the carbonic acid concentration as well as the formation of nitrogen or oxygen bubbles that could have negative effects on processes such as particle counting or spectrophotometry. In microbiological processes where purified water is used in open containers, the water will rapidly re-equilibrate with the gases in the air.
If your feedwater has higher levels of carbon dioxide, it will be worth adding an optional degasser. Speak to your local ELGA specialist for advice on the best solution for your feedwater.