Fertan FEDOGEL Tarnish & Rust Remover Gel can be used for the quick removal of Rust and Tarnish, being a gel it is perfect for brushing or Sponging onto vertical surfaces.

https://www.frost.co.uk/fertan-fedoge...

This nearly pH-neutral solution removes Rust and Tarnishes from Ferrous Steel, Stainless Steel, Copper, Brass, Chrome and Silver. Due to its high reaction speed and the effectiveness of FEDOGELS tempering, discolouration can be removed within a few seconds and depending on the degree of rust between 12 to 15 hours.

FEDOGEL does not require any heating as the natural-based, solvent-free composition guarantees gentle and environmentally friendly de-rusting. For larger components and difficult to access areas, FEDOGEL applied with a brush or sponge can be an excellent solution.