Mapei's UltraCare Sulfamic Acid Crystals areapowerful cleaning solution designed for removing tough stains and residues from nonporous, acid-resistant tile and natural stone surfaces. 

Product Overview

Mapei's UltraCare Sulfamic Acid Crystals come in a granular powder form that dissolves in water to create a cleaning solution. 

Uses:  This product is effective for removing: Cured cement grout haze  Mortar residue  Rust stains  Mineral deposits such as efflorescence.