Diedrich Chemicals 940 Fe & Mg Rem

940 is a specially formulated product for the effective removal of iron, manganese, acid burn, straw stains and other metallic stain/discoloration from brick, stone and concrete surfaces. Solves the problem effectively. Metallic staining control is dependent on a variety of surface and job site controls. Moisture control is the most prevalent factor to be addressed. Corrective measures must be taken to prevent additional moisture entrance. The wall must then be allowed to thoroughly dry before attempts at stain removal with DIEDRICH 940 IRON AND MANGANESE STAIN REMOVER commence. FOR SURFACE/MASONRY TYPES: Stone and Concrete