Flotation method, which has only been regarded as an unimportant qualitative method for determination of wettability alteration, is in this research introduced as a fast, low-cost, repeatable, quantitative method for wettability alteration studies in “Low-Salinity water” and “Silica Nanofluid” processes (two important enhanced oil recovery techniques). Results from flotation method are compared with contact angle measurements of the same conditions. Excellent consistency was observed between results from flotation and contact angle, which highlights the high potentials of flotation as an emerging standard test for enhanced oil recovery studies. Using this method, the time needed for each test (in comparison to spontaneous imbibition and contact angle measurement) is reduced from a few months to less than two weeks. Also flotation requires no advanced instruments and takes far less space than other usual methods; hence, many more parameters can be studied in a shorter time. Keywords: Flotation, Low-Salinity water, Nanosilica, Enhanced Oil Recovery, Wettability, Carbonate Rock