Mapei Ultracare Acid Cleaner Grout Residue Remover (See Options)

Features and Benefits
UltraCare Acid Cleaner easily removes cement grout and adhesive residues from the installed material leaving a perfectly clean surface.
It can be used in many dilutions depending upon the specific type of use.
For cleaning dirt accumulated on site on building materials such as ceramics, sinks and tanks, anodized, aluminum, stainless steel, chrome plating, etc.
It also contains detergent, so it cleans as well as removing stains and residues, eliminating the need for a separate clean.
It does not damage ceramic coatings, glass coatings and metal profiles however, given the variety of materials available on the market, a preliminary test at different concentrations is always recommended.