D/2 Biological Solution - 3.78 Litres (1 US Gallon) - Stone and masonry cleaner Genuine US Product shipped from UK Warehouse by Royal Mail. D/2 Biological Solution is a biodegradable, easy to use liquid that removes stains from mold, algae, mildew, lichens and air pollutants. It is effective on stone, marble, granite, limestone, brownstone, travertine, masonry, terra cotta, concrete, stucco, wood, and other architectural surfaces including monuments, sculpture and headstones. A contact time of only 10 to 15 minutes followed by scrubbing with a soft nylon or natural bristle brush will loosen most biological and air pollutant staining. D/2 has been successfully used to clean millions of buildings and monuments. From the White House to Arlington Cemetery, D/2 is trusted to work and keep on working when results matter. Masonry: D/2 can be safely used to remove dirt, soot, pollution, and biological discoloration from most masonry surfaces. Brick, concrete, granite, sandstone, marble... you name it! D/2 has been used since 1995 to clean historic masonry buildings, World Heritage Sites, and important monuments around the world. Vinyl And Canvas: D/2 can be safely used to remove dirt, soot, pollution, and biological discoloration from aluminum and vinyl siding. It can also address these contaminants on canvas and and other exterior fabrics. Although it is not a general purpose cleaner, D/2 has seen use on a variety of substrates that require a sensitive, non-acidic solution. Wood: D/2 can be safely used on most treated wood substrates to remove dirt, soot, pollution, and biological discoloration. Cleaning with D/2 can reduce recurrence of biological growth and, because D/2 contains no acids, bleach, or salts, it will not discolor or damage treated wood surfaces.
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