This High Performance Cleaner is specially formulated to be used with the Grainfather. It removes hard to clean proteins from your Grainfather without the need for tedious scrubbing. Perfect for cleaning hard to reach places such as the counter flow wort chiller, pipes and pumps. This is suitable for soft (copper) and hard (stainless steel) metals which not many other cleaners do. It is important you use this to clean your Grainfather as other cleaners may, over time, damage your system.