LEWI PURASTART. Perfect and affordable. Just connect it to the water line. The proven Lehmann water processing technology turns normal tap water into powerfully cleaning “pure” water for the cleaning process. Due to its physical characteristics, the “pure” water possesses a high cleaning power. It mixes with the dirt particles on the surface which are just washed away by the water afterwards. Ideal for cleaning works in heights of up to 6 metres safe, directly from the ground. For outdoor glass and surface cleaning of: winter gardens and glass fronts, pavilions and pergolas, garage doors and carports, photovoltaic and solar modules, campers and caravans.