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• This bottle size is 1 litre
• A 1 Litre bottle is designed to treat a 10 radiator system and can be doubled if there are more than this.
• Once added to the system, all valves should be opened and the system run at its normal temperature for at least 2 hours.
• Will help a system to restore circulation when there are issues
• Sentinel X400 is suitable for all system metals including aluminium.