The HYDROLINE RO-C supplies treated water to a connected dishwasher where mineral content can affect the finish on glasses, dishes and cutlery. Incoming mains water passes through a fine membrane to reduce dissolved salts and minerals, helping limit visible spotting and the need for polishing after washing.

The freestanding unit is intended for higher-capacity requirements. An activated-carbon filter and a sediment filter remove larger particles before they reach the membrane. Its enclosed arrangement keeps the treatment components together beside the wash area. The continuous treatment system can also help reduce limescale deposits within compatible equipment.

Water conditions need to be assessed for installation. Hobart recommends an upstream softener when the incoming hardness exceeds 10 °dH, and the system requires appropriate backflow protection and a drain connection. The RO-C is a separate water-treatment unit, so its position and connections should be planned alongside the dishwasher it will serve.