Harvard Chemical Research safety acid cleaner is a fast acting, easy-to-use phosphoric acid-base cleaner for pre-cast concrete, concrete, masonry, grout, tile and natural stone surfaces. This product will remove cement grout haze and mortar residue, joint cement, lime, hard water deposits, efflorescence, rust and other dirt and grime. Safety acid cleaner is suitable for interior and exterior use. Due to the nature of phosphoric acid, safety acid cleaner is a milder alternative to other acid-base cleaners for concrete, tile, grout and natural stone surfaces. Appearance: clear liquid with acidic odor. pH: 1 to 2. Size: 1-gallon bottle.
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