Trusted by Conservators
For decades, professionals in monument conservation have relied on D/2 Biological Solution to gently and effectively remove stains from stone, brick, and other surfaces.
D/2 was developed by conservators who know the damage that can be done by cleaners containing acid or salts. Our product has been specially formulated without these harmful agents. D/2 is a nearly pH-neutral quaternary ammonium solution with surfactants that help carry surface contaminants away. No other solution is more trusted by architectural and monument conservators.
D/2 has been successfully used to remove staining from a variety of surfaces including natural stones such as marble, granite, limestone, sandstone, slate; masonry surfaces such as brick and cast stone; concrete; wood; aluminum and vinyl siding; and canvas.
D/2 has been successfully used to clean millions of buildings and monuments. From the White House to Arlington Cemetery, D2 is trusted to work and keep on working when results matter.
