GV Demineralised Water is specially purified water that has had most mineral and salt ions removed, such as Calcium, Magnesium, Sodium, Chloride, Sulphate, Nitrate and Bicarbonate. The product is ideal for a range of automotive and general household purposes such as topping up lead acid batteries, mixing with radiator coolants, adding to household appliances, or watering delicate plants, as it does not create mineral build up.