Fernox Cleaner F3 should ideally circulate through the system for at least one hour, or up to a week. Afterward, it should be drained, and the system flushed and cleaned before adding Fernox Protector F1 or Protector + Filter Fluid, together with a Fernox TF1 Filter, to protect the system from further corrosion and scale formation.
How many kg of DS40 Descaler & Cleaner 2KG do I need for 2% solution in a 100 litre system?
One litre of water weighs 1 kg, therefore 2 kg of DS40 System Cleaner per 100 litres of system volume will make a 2% solution.
