Sunbelt Chemicals 00001 Gallon Muriatic Acid, Pack of 4 Go to amazon.com Related posts Top 9 best acido muriatico FeatureNew DescriptionGallon, Muriatic Acid, Primarily Used To Lower The pH Level Of Swimming Pool Water, Other Uses Include Etching & Cleaning Of Brick, Stone, Tile, Concrete & Other Masonry Surfaces.