Fernox F5 express cleaner is a neutral universal cleanser that can be quickly and conveniently added via a radiator adaptor or the filling loop supplied. It removes sludge, limescale and installation debris from new and existing systems restoring and maintaining heating efficiency.

• Removes sludge, scale and flux residues

• Simple to use doses in 30 seconds

• Compatible with all metals and materials, including aluminium

• 100% recyclable can

• Non-toxic, environmentally friendly formulation