---Powerful formulation: Fernox F3 Cleaner is a highly effective cleaning agent, specifically designed to remove sludge, scale, and debris from central heating systems, ensuring optimum performance and increased efficiency. ---Compatible with all metals and materials: The F3 Cleaner is safe for use in systems containing various metals, plastics, and rubber components. This versatility means it can be used across a wide range of applications, without causing any damage or deterioration. ---Neutral pH formulation: The product's neutral pH ensures that it is non-corrosive, further safeguarding system components and providing peace of mind to both professionals and homeowners alike.