Uses the safe and user friendly “Acid Replacement Technology” to remove soap scum, grime and hard water from surfaces. Also terrific on grouted restroom floors. Just 5 minutes of dwell time with minimal agitation and your grout will look like new. Can be mixed up to 10:1. Product is 75% as strong as hydrochloric acid, but it is completely safe. QTY ITEM # CASE [12/1 QT] 1770434-CS CASE [4/1 GAL] 1770433-CS Industrial Tub, Tile, & Grout Acid Replacement Theory tubtiandgrcl2 Industrial Tub, Tile, & Grout, Case (12/1 QT) Industrial Tub, Tile, & Grout, Case (4/1 GAL) Become a member of our supply community and you'll be notified of new products, labor-saving innovations, and special promotions tailored specifically for the U.S. Navy at SUPPLYTHENAVY.COM. Just call 1-888-622-0356 or click Get on the List!