HydroClean 527 is a cleaning agent for heavily oiled concrete and cementitious surfaces. Surfaces cleaned with HydroClean 527 will be additional hardened and tempered. This additional benefit makes surfaces more stable and better in just one working step. HydroClean 527 is not suitable for marble, chalky stones and shouldn´t be used on paint or lacquer. For walls and ceilings is a thixotropic version available.