Professional Grade Oxidizer - 7% Hydrogen Peroxide Protects against irregular coloring and rotten egg smells in treated water. Pro Neutra Sul® is formulated to remove the rotten egg smell and pollutants from any water supply through oxidation. Neutra Sul is a blend of Hydrogen Peroxide 7% solution and will prevent the formation of colors, tastes, corrosion and scaling by pollution degradation. Pro Neutra Sul is NSF Certified to meet NSF/ANSI Standard 60 for drinking water additives. Pro Part Number - HP05N Applications for Eliminating Rotten Egg Smell: Oxidation: Normal procedure for oxidizing a water supply and removing the rotten egg smell is usually specified by the chemical feed pump manufacturer or supplier and depends on water conditions. There are many types, designs and methods of introducing Neutra Sul to the water supply. A normal method is to inject Neutra Sul directly into the water line with the use of a chemical feed pump. Dosage rates will vary. If unsure consult owner's manual. Dosage: Proper dosage rates will vary depending on application. For oxidation of impurities, feed Neutra Sul until there are very few oxygen bubbles in treated water.