Fernox DS40 Cleaner & Descaler Powder

Fernox DS40 System Cleaner & Descaler (Powder)

Fernox DS40 is a fast-acting citric acid cleaner designed to clear limescale, magnetite (black sludge), and other stubborn deposits from central heating systems. It’s ideal for powerflushing and can also descale individual components like heat exchangers and boiler parts. The free-flowing powder dissolves quickly and comes with a liquid neutraliser to safely complete the process. Suitable for all mixed-metal systems, including aluminium.

Key Features
• Quickly removes limescale, black sludge and heavy deposits
• Restores circulation and improves heating efficiency
• Easy-dose powder for powerflushing or F&E tank dosing
• Colour indicator turns yellow when exhausted
• Safe for all system metals, including aluminium
• Includes liquid neutraliser for safe finishing