Showroom finish. Every time.Built for mobile detailers, window cleaners, homeowners, and professional shops who refuse to settle for water spots. The Spotless Water Systems DI unit delivers pure, deionised water — so surfaces dry crystal-clear, no towel required.Available in 4 sizes — from the compact 5L for mobile setups, right up to the 25L for high-volume detailing shops. Every unit is engineered to deliver the same result: zero water spots, every time.Why Deionised Water?Tap water carries dissolved minerals that leave spots, streaks, and residue on every surface. Our ion-exchange resin strips those impurities at the molecular level — what's left is pure water that evaporates without a trace.Choose Your Size 5L — Lightweight and compact. Perfect for mobile detailers, home wash bays, and on-the-go jobs. 10L — Ideal for mobile setups and small home wash bays needing a bit more capacity. 15L — Designed for small-medium detailing shops. Best for paint corrections, ceramic coatings, PPF, window cleaning, and home use. 25L — Built for medium-large detailing shops doing 10+ cars a week. The perfect stationary system to make a permanent part of your shop. What You Get Zero water spots — on paint, glass, solar panels, and more No need to physically dry the vehicle Removes abrasive solids that cause swirl marks Boosts the effectiveness of your cleaning chemicals Ideal surface prep before applying coatings or ceramic Resin is fully replaceable — the vessel lasts indefinitely How It WorksDeionised water systems remove all impurities and minerals from the water through a process called ion exchange. The water passes through a resin bed that attracts and removes the ions, leaving behind pure, deionised water.