TileLab concentrated crystals mix with water to make a mild, safe to use, acid cleaner

Removes dried Portland cement grout haze and mortar residue from tile, concrete, and masonry

Safe for use on colored grouts

Removes hard water deposits, efflorescence, and also etches concrete

Use on all colors of grout, tile clay pavers, concrete and masonry

Do not use on marble or other polished stone

May etch some glazed tile

Coverage: Depending on the application, 1-pound of concentrated crystals will make from 1 to over 12 gallons of Sulfamic acid solution

1-gallon will clean approximately 300 square feet