Plumbflush Concentrated Heating System Cleaner | Plu740100296 Easy to apply Prevents sludging Removes rust, corrosion, lime and built up deposits Size: 750ml Tec 7 Plumbflush Heating System Cleaner 750Ml | Plu740100296 A strong concentrated universal cleaner for use in all water based heating systems. Due to its alkaline composition it quickly and efficiently removes corrosion, salts and crystals that sludge the heating system. When used correctly, Plumbflush is completely safe for synthetic materials, rubber, copper, aluminium and cast iron. Plumbflush removes fixed deposits and therefore improves the efficiency of the circulatory system. Suitable for use with all types of water based heating systems