Reduces limescale formation on water supply elements (pipes, valves, taps, shower heads, water heating coils of household appliances) – 76% efficiency. It reduces the amount of Escheria Coli bacteria up to 40% (thanks to the silver electrodes it contains). New Patented technology TGP – Turbulent Galvanic Polarization – NO CHEMICALS, NO EXTERNAL ENERGY USAGE. Suitable for COLD (drinking) water. NRL Certification for direct and continuous contact with drinking water. Durable body (Stainless steel 1.4301) and internal parts.