The present invention relates to an apparatus designed to control the application of the previously uncontrollable reaction of a peroxide composition and an alkaline composition, and accurately maintain the desired composition ratios for removal of and destruction of microbiological and organic contamination on a surface safely and without waste of the materials. The apparatus may also be used to maintain the highest demulsifying and antimicrobial activity of an organic acid composition blended with a peroxide composition by limiting contact time and the level of degradation of the components of the organic acid composition. A method of using the apparatus is provided for removing biofilm, bacteria, fungal cells, spores, fragments, and hyphae, microbiological slime, and organic contaminants from porous and non-porous surfaces, maintaining the integrity and life expectancy of the substrates, and increasing their resistance to new biofilm formation and microbiological deposition.
