For the Roessl owner, Helmut Peter, it wasn't a question of the basis effect of GRANDER water revitalisation, since he had done extensive research by other businesses having a similar structure and was convinced, but he was more interested in the variety of applications it would offer.
Peter wanted to know exactly, therefore he had his water values tested prior to and after the installation. His result: "The corrosion situation with the rust sedimentation deposits within the entire heating system improved - the water in the heating pipes was clear as glass and odourless - and the bacteriological balance of the water also improved."