Specially formulated polymer dispersion with extremely fine particles with nano-scale dimension (approx. 50 nm) which are a guarantee for deep and fast penetration. Water based and solvent free. Due to its fast and deep penetration into the substrate it is recommended for impregnation of medium and low absorbent mineral surfaces. For priming concrete surfaces prior to laying ceramic tiles and stone. For priming concrete surfaces prior to the application of waterproof cement compounds. For priming medium absorbent and non-absorbent mineral surfaces of screeds and concretes prior to the application of floor self-levelling compounds and laying the covering. Regarding the absorption capability of the substrate it can be used as a concentrate or mixed with water in the ratio 1:1.