MERIDA FLEX FLOW line consists of four super concentrates that allow you to clean any surface in any room. Merida Flex Flow: F1 - for floors, F2 - for bathrooms, F3 - for windows, tiles and all waterproof surfaces, F4 - for removing fat, irreplaceable in the kitchen. The Merida Flex Flow system mixes the super concentrate with water to give the finished solution, a spray bottle or a bucket. Just screw the dispensing pistol onto the bottle, connect the hose to the water - ready.