{"product_id":"sentinel-x400-sludge-remover-1ltr","title":"Sentinel X400 Sludge Remover 1Ltr","description":"\u003cp\u003eSentinel X400 Sludge Remover is a powerful central heating system cleanser formulated to remove black iron oxide sludge (magnetite), limescale, and other corrosion deposits that accumulate over time, reducing system efficiency and boiler performance.\u003c\/p\u003e\n\n\u003cp\u003eAdding sludge remover before a full system flush restores heat output, reduces boiler noise, and extends the life of pumps, valves, and radiators. X400 circulates through the system at normal operating temperatures, breaking down stubborn deposits into suspension so they can be flushed away.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRemoves black iron oxide sludge, limescale, and corrosion deposits\u003c\/li\u003e\n\u003cli\u003eSuitable for all central heating system types including sealed and open vented systems\u003c\/li\u003e\n\u003cli\u003eCompatible with all metals including aluminium heat exchangers\u003c\/li\u003e\n\u003cli\u003e1 litre dose treats a typical domestic heating system\u003c\/li\u003e\n\u003cli\u003eCan be used with Sentinel X800 Rapid Power Flush Aid for heavily contaminated systems\u003c\/li\u003e\n\u003cli\u003eWorks at normal operating temperatures — no powerflush equipment required for lightly sludged systems\u003c\/li\u003e\n\u003cli\u003eUse before applying Sentinel X100 Inhibitor to provide long-term corrosion protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplication\u003c\/h2\u003e\n\u003cp\u003eAdd X400 to the system via a radiator or magnetic filter, circulate for a minimum of one hour (longer for heavily sludged systems), then drain and flush the system. Follow with Sentinel X100 Inhibitor to maintain protection.\u003c\/p\u003e\n\n\u003cp\u003eBarcode: 5016402052740 | SKU: X400\u003c\/p\u003e\n","brand":"APM Plumbing \u0026 Electrical","offers":[{"title":"Default Title","offer_id":55456865485180,"sku":"X400","price":19.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0492\/6973\/5581\/files\/89458_P.jpg?v=1774298023","url":"https:\/\/apmi.uk\/products\/sentinel-x400-sludge-remover-1ltr","provider":"APM Plumbing \u0026 Electrical","version":"1.0","type":"link"}