Sentinel X400 1 litre sludge remover is a powerful non-acid treatment, specially designed to restore circulation to radiators and pipework of older heating systems. By eliminating the build-up of magnetite sludge, X400 eliminates cold spots and restores full heat emission. It also helps to improve and maintain system efficiency and conserve fuel.

• Can be used in all types of systems
• Prepares for the installation of new boilers, pumps or panels
• Does not cause pin-holing or leaks
• New systems should be cleaned with Sentinel X300 system cleaner