What do de-ionization cartridges specifically remove from water?

De-ionization cartridges are designed to remove charged ions from water, which include both cations (positively charged ions) and anions (negatively charged ions). This process involves the use of resin beads that exchange their ions for the unwanted ions present in the water, effectively demineralizing it.

As a result, de-ionization is highly effective in producing purified water for applications that require low levels of conductivity and ion content, such as laboratory work, electronics manufacturing, and certain industrial processes.

While large sediments, microorganisms, and organic chemicals may be removed through other filtration processes such as sediment filters, UV sterilization, or activated carbon, those processes do not specifically target charged particles in the same way that de-ionization does. Therefore, the focus of de-ionization cartridges on removing charged ions makes this the correct answer.