Mixed bed ion exchange resins are a combination of both cation and anion exchange resins mixed together in a single vessel or container. These resins are used in water purification systems to achieve high-quality deionized water by effectively removing both positively charged ions (cations) and negatively charged ions (anions) from water simultaneously.

In mixed bed systems, cation and anion exchange resins are typically mixed in a ratio that ensures complete removal of all ions, resulting in highly purified water. This makes mixed bed ion exchange resins ideal for applications requiring ultra-pure water, such as in laboratories, pharmaceutical manufacturing, and electronics industry.