Calmag CalChem 1 Litre

Unique leave in system formula Restores central heating system efficiency Suppresses bacterial and algae growth Protects against corrosion damage and limescale formation Environmentally friendly Prevents boiler noise, venting of radiators and pump seizure Lubricates valves and pumps Easy to use simply add through the filling loop, a radiator, or header tank, then leave to circulate Suitable for all types of systems Contains antifreeze for cold weather protection 1 litre sufficient for treating 10 15 radiators