Sentinel X100 Inhibitor safeguards clean central heating systems by preventing limescale buildup and corrosion. It's suitable for all types of indirect central heating systems, prolonging system life, maximizing efficiency, and reducing fuel consumption. Key Features: Heavy-duty inhibitor Guards against limescale and corrosion Recommended by the Energy Saving Trust Utilizes Triple Tech Anti-Corrosion Technology Compatible with all system metals pH neutral formulation Ensures optimal system efficiency Works with hard, soft, and artificially softened water Helps prevent hydrogen gas formation Simple test kit available to check levels