CO2 levels in water

To prevent demineralized water (DM water) from coming into contact with carbon dioxide (CO2) from the air, you can install CO2 absorbers or breather filters on the vent nozzle of the tanks. These filters trap and remove CO2 from the air that enters the tank. 

Here are some other things to know about CO2 in water:

CO2 levels in water

Surface waters typically have less than 10 parts per million (ppm) of dissolved CO2, while groundwater can have much higher levels. 

CO2 and pH

CO2 concentration in water can significantly impact pH. In unpolluted water, CO2 is a major source of acidity. 

CO2 and aquatic organisms

Levels of 30 ppm are harmful to most organisms, and levels greater than 35 ppm are limiting to all aquatic organisms. 

CO2 and boilers

In the power industry, demineralized water is often used for boiler feed water and steam generation. Dissolved gases like CO2 can cause severe corrosion on boiler pipes and parts.