A 3-Ton Ion RO System is a high-capacity industrial purification unit designed to produce 3,000 liters of purified water per hour (LPH). The term "Ion" in this context usually refers to a system integrated with Ion Exchange technology—either as a softener pre-treatment or a Deionization (DI) post-treatment—to achieve extremely low TDS (Total Dissolved Solids) or "ultrapure" water.