In water, the water-miscible concentrates produce transparent solutions or emulsions. They combine the benefit of water, as an environmentally friendly solvent, with excellent corrosion prevention. Their use is especially recommended when parts have gone through an aqueous pretreatment (metal machining using a water miscible coolant, galvanic finishing or phosphatizing) or when used as an additive to press water. According to requirements there is a selection of products available to produce strong, thermally stable emulsions with a good resistance to acidic or alkaline contaminants as well as concentrates for semi or meta stable emulsions for especially high corrosion prevention requirements. The complete drying of the emulsion films on the surface is necessary to achieve optimum corrosion prevention results.