Nu-Brite 4X
Nu-Brite 4X - It is formulated as an ultra-concentrated liquid where one 1-quart bottle equals one full gallon of traditional Nu-Brite cleaner when diluted at a 4:1 ratio. Application: Strictly for outdoor air-cooled condensers and finned heating/cooling coils. It is not recommended for indoor use and should never be used on indoor evaporator coils.