HMK R777 Rust Remover - 1ltr.

HMK® R77  (1 liter) is a ready to use special product that specifically removes rust spots and stains from all acid tolerant dense stone.  Special additives reduce the development of rust after treatment.  Do not apply in direct sunlight. Acid-sensitive surfaces such as polished and honed marble, limestone, agglomerates and concrete products, plastics and certain metal surfaces can be damaged by contact with HMK® R77.  For interior and exterior use.
Important:  Do not wet surface before being treated.  HMK® R77 can darken the stone if allowed to dry on the surface, although this may be reversed over time.
Instructions: Protect all adjacent surfaces. If under-floor heating exists, switch it off and allow the surface to cool to room temperature.  Apply undiluted HMK® R77 generously and evenly and work into the surface using a scrubbing brush, stiff brush or a suitable pad.  Always apply to the whole surface.  Place towels soaked with R77 onto the surface to keep the surface wet and to ensure that the treatment does not dry out. Immediately after application, cover the surface with plastic and let sit for 12 hours.  Remove any remaining product on the surface after 12 hours and clean the area thoroughly using HMK® R55 Intensive Cleaner -acid free- diluted with clean water about 1:10 and remove the dirty liquid.  Afterwards, rinse the area thoroughly with clean water.