PREIS Pump Cleaner is specifically designed to clean pumps, glas and other technical appliances from coralline red algae and other calcium deposits. PREIS Pump Cleaner is odorless, highly concentrated and 100% biological degradable. If used according to instructions, PREIS Pump Cleaner is totally safe and a reliable limescale remover.PREIS Pump Cleaner+ quickly dissolves limescale, corrosion and other mineral deposits+ can safely be used on stainless steel, glass and rubber components+ easy to use+ 100% degradable+ hard on limescale, soft on the surfaceDosage and application PREIS Pump CleanerDissolve 1-2 tablespoons of Pump Cleaner in 0,5l freshwater. Leave object in solution to soak until it takes effect and deposits come off. If necessary, allow tough stains to soak for several hours and clean manually afterwards. Remove object and rinse thoroughly with tap water.