Overview Reviews Product Description Produced by heat treatment, a non-chemical method, deionised water is very useful for.... Car batteries. Car and residential radiators - prevents rust and mineral blockages improving radiator efficiency. Irons - prevents rusting and 'furring' (the horrible brown deposits that spit out from your iron). This product is not for health critical, laboratory, scientific or nuclear applications. Not for human consumption. Product Videos Custom Field Product Reviews Write a Review Write a Review × Galaxy Print Finishing Deionised Water Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *