Nu EcoSafe Strip Concrete Etch is a water-based surface prep etching compound specifically designed to provide a surface profile on green and mature concrete. Etching is often a pre-requisite for application of high-performance paint/coating systems. Nu EcoSafe Strip Concrete Etch, has been proven to effectively etch green and mature concrete and masonry. The depth of etching achieved with Nu EcoSafe Strip Concrete Etch is the same as that of hydrochloric or muriatic acid. The residue is easily removed by water rinsing. These products are suitable for treating vertical and horizontal surfaces.