Branson OR Oxide Remover Concentrate is a blend of non-ionic detergents in an acidic base. It is a phosphate-free and biodegradable. Branson OR rapidly removes rust and other oxides from metals. Caution should be used with this acidic material.Typical applications include: oxide removal following soldering, brazing, welding, and similar operations.Branson OR is mixed with water in a concentration of 6 to 7% by volume and can be used at temperatures ranging from ambient to 120 °F (48 °C). Optimum cleaning performance is achieved at higher temperatures.