MARENOL Deionized Water 10 L is technically purified water with near-zero conductivity and a neutral pH of 7. Use it to top up car batteries, dilute antifreeze concentrate and fill steam irons or steam cleaners. The 10-litre pack covers a whole season of car care plus everyday household appliances.

Reverse-osmosis purity that leaves no deposits

MARENOL deionized water is produced by reverse osmosis, a membrane process that strips out salts, ions and particles. Nothing is left behind when the water evaporates, so heating elements and battery terminals stay free of limescale and residue.

Car use: battery top-ups and coolant mixing

In the garage, MARENOL deionized water tops up battery cells and dilutes antifreeze concentrate before it goes into the cooling system. Near-zero conductivity protects the electrolyte, while the absence of minerals keeps radiator passages clear.

Spotless ironing and steam cleaning

For steam irons, ironing systems and steam cleaners, MARENOL deionized water prevents scale build-up in the tank and avoids white marks on fabrics. It also suits humidifiers and other water-filled appliances.