Duke FLOOR OXIDE is a highly concentrated dry powder of the finest grade, ideally suited for cement floors. It is lightweight, alkali-resistant, non-toxic, and non-flammable, producing attractive shades. A floor made with Duke Floor Oxide can withstand repeated washing with water and can be polished and buffed with standard floor care materials. Duke Floor Oxide can be used with a minimum cement-to-oxide ratio of 6:1 and a maximum ratio of 7:1.