The Kärcher Glass Cleaner RM 500 (6.295-772.0) is a concentrated cleaning solution designed to leave smooth, waterproof surfaces like windows, mirrors, and glass shower cabins completely streak-free. Made in Germany, this formula effectively breaks down grease, insect residue, and environmental emissions while leaving behind a pleasant fresh aroma. Its strong wetting properties ensure that the liquid spreads evenly across the surface for a more efficient clean. You can use this 500 ml concentrate manually or with a wide range of Kärcher window vacuums, including the WV and RCW series. To prepare the solution, simply mix 30 ml—roughly one and a half bottle caps—into 220 ml of water. The product comes in a bottle made from 100% recycled plastic, reflecting a commitment to sustainability in its physical design.