EK-Cryofuel Loop Cleaner is a liquid cooling system and radiator cleaner. The purpose of the EK-Cryofuel Loop Cleaner is to clean your existing loop before pouring in new coolant or to prepare a new, unused custom loop fully. It removes any manufacturing residues, impurities, and old coolant stains. This is not a stand-alone product as it requires a subsequent use of the Superflush solution to pick up any residue from the cleaner and ensure maximum stability of your new coolant. It can improve the performance of your water cooling system. EK-Cryofuel Loop Cleaner comes as a concentrate in a 250ml bottle and should be mixed with 1250ml (1:5 ratio) of distilled water before use. It is poured into an empty water-cooling system and left to circulate from 2 to 24 hours. This solution does not act as a corrosive inhibitor or biocide for coolants. It should not be left in the system for periods significantly longer than suggested. Compatible with all EK soft and hard tubing. Model: 3831109897690